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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
/// <reference no-default-lib="true" />
/// <reference lib="deno.ns" />
/// <reference lib="deno.broadcast_channel" />
/// <reference lib="deno.webgpu" />
/// <reference lib="esnext" />
/// <reference lib="es2022.intl" />
declare namespace Deno {
export {}; // stop default export type behavior
/** Information for a HTTP request.
*
* @category HTTP Server
* @tags unstable
*/
export interface ServeHandlerInfo {
/** The remote address of the connection. */
remoteAddr: Deno.NetAddr;
/** The completion promise */
completed: Promise<void>;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Retrieve the process umask. If `mask` is provided, sets the process umask.
* This call always returns what the umask was before the call.
*
* ```ts
* console.log(Deno.umask()); // e.g. 18 (0o022)
* const prevUmaskValue = Deno.umask(0o077); // e.g. 18 (0o022)
* console.log(Deno.umask()); // e.g. 63 (0o077)
* ```
*
* This API is under consideration to determine if permissions are required to
* call it.
*
* *Note*: This API is not implemented on Windows
*
* @category File System
* @tags unstable
*/
export function umask(mask?: number): number;
/** **UNSTABLE**: New API, yet to be vetted.
*
* All plain number types for interfacing with foreign functions.
*
* @category FFI
* @tags unstable
*/
export type NativeNumberType =
| "u8"
| "i8"
| "u16"
| "i16"
| "u32"
| "i32"
| "f32"
| "f64";
/** **UNSTABLE**: New API, yet to be vetted.
*
* All BigInt number types for interfacing with foreign functions.
*
* @category FFI
* @tags unstable
*/
export type NativeBigIntType =
| "u64"
| "i64"
| "usize"
| "isize";
/** **UNSTABLE**: New API, yet to be vetted.
*
* The native boolean type for interfacing to foreign functions.
*
* @category FFI
* @tags unstable
*/
export type NativeBooleanType = "bool";
/** **UNSTABLE**: New API, yet to be vetted.
*
* The native pointer type for interfacing to foreign functions.
*
* @category FFI
* @tags unstable
*/
export type NativePointerType = "pointer";
/** **UNSTABLE**: New API, yet to be vetted.
*
* The native buffer type for interfacing to foreign functions.
*
* @category FFI
* @tags unstable
*/
export type NativeBufferType = "buffer";
/** **UNSTABLE**: New API, yet to be vetted.
*
* The native function type for interfacing with foreign functions.
*
* @category FFI
* @tags unstable
*/
export type NativeFunctionType = "function";
/** **UNSTABLE**: New API, yet to be vetted.
*
* The native void type for interfacing with foreign functions.
*
* @category FFI
* @tags unstable
*/
export type NativeVoidType = "void";
/** **UNSTABLE**: New API, yet to be vetted.
*
* The native struct type for interfacing with foreign functions.
*
* @category FFI
* @tags unstable
*/
export type NativeStructType = { readonly struct: readonly NativeType[] };
/**
* @category FFI
* @tags unstable
*/
export const brand: unique symbol;
/**
* @category FFI
* @tags unstable
*/
export type NativeU8Enum<T extends number> = "u8" & { [brand]: T };
/**
* @category FFI
* @tags unstable
*/
export type NativeI8Enum<T extends number> = "i8" & { [brand]: T };
/**
* @category FFI
* @tags unstable
*/
export type NativeU16Enum<T extends number> = "u16" & { [brand]: T };
/**
* @category FFI
* @tags unstable
*/
export type NativeI16Enum<T extends number> = "i16" & { [brand]: T };
/**
* @category FFI
* @tags unstable
*/
export type NativeU32Enum<T extends number> = "u32" & { [brand]: T };
/**
* @category FFI
* @tags unstable
*/
export type NativeI32Enum<T extends number> = "i32" & { [brand]: T };
/**
* @category FFI
* @tags unstable
*/
export type NativeTypedPointer<T extends PointerObject> = "pointer" & {
[brand]: T;
};
/**
* @category FFI
* @tags unstable
*/
export type NativeTypedFunction<T extends UnsafeCallbackDefinition> =
& "function"
& {
[brand]: T;
};
/** **UNSTABLE**: New API, yet to be vetted.
*
* All supported types for interfacing with foreign functions.
*
* @category FFI
* @tags unstable
*/
export type NativeType =
| NativeNumberType
| NativeBigIntType
| NativeBooleanType
| NativePointerType
| NativeBufferType
| NativeFunctionType
| NativeStructType;
/** **UNSTABLE**: New API, yet to be vetted.
*
* @category FFI
* @tags unstable
*/
export type NativeResultType = NativeType | NativeVoidType;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Type conversion for foreign symbol parameters and unsafe callback return
* types.
*
* @category FFI
* @tags unstable
*/
export type ToNativeType<T extends NativeType = NativeType> = T extends
NativeStructType ? BufferSource
: T extends NativeNumberType ? T extends NativeU8Enum<infer U> ? U
: T extends NativeI8Enum<infer U> ? U
: T extends NativeU16Enum<infer U> ? U
: T extends NativeI16Enum<infer U> ? U
: T extends NativeU32Enum<infer U> ? U
: T extends NativeI32Enum<infer U> ? U
: number
: T extends NativeBigIntType ? number | bigint
: T extends NativeBooleanType ? boolean
: T extends NativePointerType
? T extends NativeTypedPointer<infer U> ? U | null : PointerValue
: T extends NativeFunctionType
? T extends NativeTypedFunction<infer U> ? PointerValue<U> | null
: PointerValue
: T extends NativeBufferType ? BufferSource | null
: never;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Type conversion for unsafe callback return types.
*
* @category FFI
* @tags unstable
*/
export type ToNativeResultType<
T extends NativeResultType = NativeResultType,
> = T extends NativeStructType ? BufferSource
: T extends NativeNumberType ? T extends NativeU8Enum<infer U> ? U
: T extends NativeI8Enum<infer U> ? U
: T extends NativeU16Enum<infer U> ? U
: T extends NativeI16Enum<infer U> ? U
: T extends NativeU32Enum<infer U> ? U
: T extends NativeI32Enum<infer U> ? U
: number
: T extends NativeBigIntType ? number | bigint
: T extends NativeBooleanType ? boolean
: T extends NativePointerType
? T extends NativeTypedPointer<infer U> ? U | null : PointerValue
: T extends NativeFunctionType
? T extends NativeTypedFunction<infer U> ? PointerObject<U> | null
: PointerValue
: T extends NativeBufferType ? BufferSource | null
: T extends NativeVoidType ? void
: never;
/** **UNSTABLE**: New API, yet to be vetted.
*
* A utility type for conversion of parameter types of foreign functions.
*
* @category FFI
* @tags unstable
*/
export type ToNativeParameterTypes<T extends readonly NativeType[]> =
//
[(T[number])[]] extends [T] ? ToNativeType<T[number]>[]
: [readonly (T[number])[]] extends [T]
? readonly ToNativeType<T[number]>[]
: T extends readonly [...NativeType[]] ? {
[K in keyof T]: ToNativeType<T[K]>;
}
: never;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Type conversion for foreign symbol return types and unsafe callback
* parameters.
*
* @category FFI
* @tags unstable
*/
export type FromNativeType<T extends NativeType = NativeType> = T extends
NativeStructType ? Uint8Array
: T extends NativeNumberType ? T extends NativeU8Enum<infer U> ? U
: T extends NativeI8Enum<infer U> ? U
: T extends NativeU16Enum<infer U> ? U
: T extends NativeI16Enum<infer U> ? U
: T extends NativeU32Enum<infer U> ? U
: T extends NativeI32Enum<infer U> ? U
: number
: T extends NativeBigIntType ? number | bigint
: T extends NativeBooleanType ? boolean
: T extends NativePointerType
? T extends NativeTypedPointer<infer U> ? U | null : PointerValue
: T extends NativeBufferType ? PointerValue
: T extends NativeFunctionType
? T extends NativeTypedFunction<infer U> ? PointerObject<U> | null
: PointerValue
: never;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Type conversion for foreign symbol return types.
*
* @category FFI
* @tags unstable
*/
export type FromNativeResultType<
T extends NativeResultType = NativeResultType,
> = T extends NativeStructType ? Uint8Array
: T extends NativeNumberType ? T extends NativeU8Enum<infer U> ? U
: T extends NativeI8Enum<infer U> ? U
: T extends NativeU16Enum<infer U> ? U
: T extends NativeI16Enum<infer U> ? U
: T extends NativeU32Enum<infer U> ? U
: T extends NativeI32Enum<infer U> ? U
: number
: T extends NativeBigIntType ? number | bigint
: T extends NativeBooleanType ? boolean
: T extends NativePointerType
? T extends NativeTypedPointer<infer U> ? U | null : PointerValue
: T extends NativeBufferType ? PointerValue
: T extends NativeFunctionType
? T extends NativeTypedFunction<infer U> ? PointerObject<U> | null
: PointerValue
: T extends NativeVoidType ? void
: never;
/** **UNSTABLE**: New API, yet to be vetted.
*
* @category FFI
* @tags unstable
*/
export type FromNativeParameterTypes<
T extends readonly NativeType[],
> =
//
[(T[number])[]] extends [T] ? FromNativeType<T[number]>[]
: [readonly (T[number])[]] extends [T]
? readonly FromNativeType<T[number]>[]
: T extends readonly [...NativeType[]] ? {
[K in keyof T]: FromNativeType<T[K]>;
}
: never;
/** **UNSTABLE**: New API, yet to be vetted.
*
* The interface for a foreign function as defined by its parameter and result
* types.
*
* @category FFI
* @tags unstable
*/
export interface ForeignFunction<
Parameters extends readonly NativeType[] = readonly NativeType[],
Result extends NativeResultType = NativeResultType,
NonBlocking extends boolean = boolean,
> {
/** Name of the symbol.
*
* Defaults to the key name in symbols object. */
name?: string;
/** The parameters of the foreign function. */
parameters: Parameters;
/** The result (return value) of the foreign function. */
result: Result;
/** When `true`, function calls will run on a dedicated blocking thread and
* will return a `Promise` resolving to the `result`. */
nonblocking?: NonBlocking;
/** When `true`, function calls can safely callback into JavaScript or
* trigger a garbage collection event.
*
* @default {false} */
callback?: boolean;
/** When `true`, dlopen will not fail if the symbol is not found.
* Instead, the symbol will be set to `null`.
*
* @default {false} */
optional?: boolean;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* @category FFI
* @tags unstable
*/
export interface ForeignStatic<Type extends NativeType = NativeType> {
/** Name of the symbol, defaults to the key name in symbols object. */
name?: string;
/** The type of the foreign static value. */
type: Type;
/** When `true`, dlopen will not fail if the symbol is not found.
* Instead, the symbol will be set to `null`.
*
* @default {false} */
optional?: boolean;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* A foreign library interface descriptor.
*
* @category FFI
* @tags unstable
*/
export interface ForeignLibraryInterface {
[name: string]: ForeignFunction | ForeignStatic;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* A utility type that infers a foreign symbol.
*
* @category FFI
* @tags unstable
*/
export type StaticForeignSymbol<T extends ForeignFunction | ForeignStatic> =
T extends ForeignFunction ? FromForeignFunction<T>
: T extends ForeignStatic ? FromNativeType<T["type"]>
: never;
/** **UNSTABLE**: New API, yet to be vetted.
*
* @category FFI
* @tags unstable
*/
export type FromForeignFunction<T extends ForeignFunction> =
T["parameters"] extends readonly [] ? () => StaticForeignSymbolReturnType<T>
: (
...args: ToNativeParameterTypes<T["parameters"]>
) => StaticForeignSymbolReturnType<T>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* @category FFI
* @tags unstable
*/
export type StaticForeignSymbolReturnType<T extends ForeignFunction> =
ConditionalAsync<T["nonblocking"], FromNativeResultType<T["result"]>>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* @category FFI
* @tags unstable
*/
export type ConditionalAsync<IsAsync extends boolean | undefined, T> =
IsAsync extends true ? Promise<T> : T;
/** **UNSTABLE**: New API, yet to be vetted.
*
* A utility type that infers a foreign library interface.
*
* @category FFI
* @tags unstable
*/
export type StaticForeignLibraryInterface<T extends ForeignLibraryInterface> =
{
[K in keyof T]: T[K]["optional"] extends true
? StaticForeignSymbol<T[K]> | null
: StaticForeignSymbol<T[K]>;
};
/** **UNSTABLE**: New API, yet to be vetted.
*
* A non-null pointer, represented as an object
* at runtime. The object's prototype is `null`
* and cannot be changed. The object cannot be
* assigned to either and is thus entirely read-only.
*
* To interact with memory through a pointer use the
* {@linkcode UnsafePointerView} class. To create a
* pointer from an address or the get the address of
* a pointer use the static methods of the
* {@linkcode UnsafePointer} class.
*
* @category FFI
* @tags unstable
*/
export type PointerObject<T = unknown> = { [brand]: T };
/** **UNSTABLE**: New API, yet to be vetted.
*
* Pointers are represented either with a {@linkcode PointerObject}
* object or a `null` if the pointer is null.
*
* @category FFI
* @tags unstable
*/
export type PointerValue<T = unknown> = null | PointerObject<T>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* A collection of static functions for interacting with pointer objects.
*
* @category FFI
* @tags unstable
*/
export class UnsafePointer {
/** Create a pointer from a numeric value. This one is <i>really</i> dangerous! */
static create<T = unknown>(value: number | bigint): PointerValue<T>;
/** Returns `true` if the two pointers point to the same address. */
static equals<T = unknown>(a: PointerValue<T>, b: PointerValue<T>): boolean;
/** Return the direct memory pointer to the typed array in memory. */
static of<T = unknown>(
value: Deno.UnsafeCallback | BufferSource,
): PointerValue<T>;
/** Return a new pointer offset from the original by `offset` bytes. */
static offset<T = unknown>(
value: PointerObject,
offset: number,
): PointerValue<T>;
/** Get the numeric value of a pointer */
static value(value: PointerValue): number | bigint;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* An unsafe pointer view to a memory location as specified by the `pointer`
* value. The `UnsafePointerView` API follows the standard built in interface
* {@linkcode DataView} for accessing the underlying types at an memory
* location (numbers, strings and raw bytes).
*
* @category FFI
* @tags unstable
*/
export class UnsafePointerView {
constructor(pointer: PointerObject);
pointer: PointerObject;
/** Gets a boolean at the specified byte offset from the pointer. */
getBool(offset?: number): boolean;
/** Gets an unsigned 8-bit integer at the specified byte offset from the
* pointer. */
getUint8(offset?: number): number;
/** Gets a signed 8-bit integer at the specified byte offset from the
* pointer. */
getInt8(offset?: number): number;
/** Gets an unsigned 16-bit integer at the specified byte offset from the
* pointer. */
getUint16(offset?: number): number;
/** Gets a signed 16-bit integer at the specified byte offset from the
* pointer. */
getInt16(offset?: number): number;
/** Gets an unsigned 32-bit integer at the specified byte offset from the
* pointer. */
getUint32(offset?: number): number;
/** Gets a signed 32-bit integer at the specified byte offset from the
* pointer. */
getInt32(offset?: number): number;
/** Gets an unsigned 64-bit integer at the specified byte offset from the
* pointer. */
getBigUint64(offset?: number): number | bigint;
/** Gets a signed 64-bit integer at the specified byte offset from the
* pointer. */
getBigInt64(offset?: number): number | bigint;
/** Gets a signed 32-bit float at the specified byte offset from the
* pointer. */
getFloat32(offset?: number): number;
/** Gets a signed 64-bit float at the specified byte offset from the
* pointer. */
getFloat64(offset?: number): number;
/** Gets a pointer at the specified byte offset from the pointer */
getPointer<T = unknown>(offset?: number): PointerValue<T>;
/** Gets a C string (`null` terminated string) at the specified byte offset
* from the pointer. */
getCString(offset?: number): string;
/** Gets a C string (`null` terminated string) at the specified byte offset
* from the specified pointer. */
static getCString(
pointer: PointerObject,
offset?: number,
): string;
/** Gets an `ArrayBuffer` of length `byteLength` at the specified byte
* offset from the pointer. */
getArrayBuffer(byteLength: number, offset?: number): ArrayBuffer;
/** Gets an `ArrayBuffer` of length `byteLength` at the specified byte
* offset from the specified pointer. */
static getArrayBuffer(
pointer: PointerObject,
byteLength: number,
offset?: number,
): ArrayBuffer;
/** Copies the memory of the pointer into a typed array.
*
* Length is determined from the typed array's `byteLength`.
*
* Also takes optional byte offset from the pointer. */
copyInto(destination: BufferSource, offset?: number): void;
/** Copies the memory of the specified pointer into a typed array.
*
* Length is determined from the typed array's `byteLength`.
*
* Also takes optional byte offset from the pointer. */
static copyInto(
pointer: PointerObject,
destination: BufferSource,
offset?: number,
): void;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* An unsafe pointer to a function, for calling functions that are not present
* as symbols.
*
* @category FFI
* @tags unstable
*/
export class UnsafeFnPointer<const Fn extends ForeignFunction> {
/** The pointer to the function. */
pointer: PointerObject<Fn>;
/** The definition of the function. */
definition: Fn;
constructor(pointer: PointerObject<NoInfer<Fn>>, definition: Fn);
/** @deprecated Properly type {@linkcode pointer} using {@linkcode NativeTypedFunction} or {@linkcode UnsafeCallbackDefinition} types. */
constructor(pointer: PointerObject, definition: Fn);
/** Call the foreign function. */
call: FromForeignFunction<Fn>;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Definition of a unsafe callback function.
*
* @category FFI
* @tags unstable
*/
export interface UnsafeCallbackDefinition<
Parameters extends readonly NativeType[] = readonly NativeType[],
Result extends NativeResultType = NativeResultType,
> {
/** The parameters of the callbacks. */
parameters: Parameters;
/** The current result of the callback. */
result: Result;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* An unsafe callback function.
*
* @category FFI
* @tags unstable
*/
export type UnsafeCallbackFunction<
Parameters extends readonly NativeType[] = readonly NativeType[],
Result extends NativeResultType = NativeResultType,
> = Parameters extends readonly [] ? () => ToNativeResultType<Result> : (
...args: FromNativeParameterTypes<Parameters>
) => ToNativeResultType<Result>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* An unsafe function pointer for passing JavaScript functions as C function
* pointers to foreign function calls.
*
* The function pointer remains valid until the `close()` method is called.
*
* All `UnsafeCallback` are always thread safe in that they can be called from
* foreign threads without crashing. However, they do not wake up the Deno event
* loop by default.
*
* If a callback is to be called from foreign threads, use the `threadSafe()`
* static constructor or explicitly call `ref()` to have the callback wake up
* the Deno event loop when called from foreign threads. This also stops
* Deno's process from exiting while the callback still exists and is not
* unref'ed.
*
* Use `deref()` to then allow Deno's process to exit. Calling `deref()` on
* a ref'ed callback does not stop it from waking up the Deno event loop when
* called from foreign threads.
*
* @category FFI
* @tags unstable
*/
export class UnsafeCallback<
const Definition extends UnsafeCallbackDefinition =
UnsafeCallbackDefinition,
> {
constructor(
definition: Definition,
callback: UnsafeCallbackFunction<
Definition["parameters"],
Definition["result"]
>,
);
/** The pointer to the unsafe callback. */
readonly pointer: PointerObject<Definition>;
/** The definition of the unsafe callback. */
readonly definition: Definition;
/** The callback function. */
readonly callback: UnsafeCallbackFunction<
Definition["parameters"],
Definition["result"]
>;
/**
* Creates an {@linkcode UnsafeCallback} and calls `ref()` once to allow it to
* wake up the Deno event loop when called from foreign threads.
*
* This also stops Deno's process from exiting while the callback still
* exists and is not unref'ed.
*/
static threadSafe<
Definition extends UnsafeCallbackDefinition = UnsafeCallbackDefinition,
>(
definition: Definition,
callback: UnsafeCallbackFunction<
Definition["parameters"],
Definition["result"]
>,
): UnsafeCallback<Definition>;
/**
* Increments the callback's reference counting and returns the new
* reference count.
*
* After `ref()` has been called, the callback always wakes up the
* Deno event loop when called from foreign threads.
*
* If the callback's reference count is non-zero, it keeps Deno's
* process from exiting.
*/
ref(): number;
/**
* Decrements the callback's reference counting and returns the new
* reference count.
*
* Calling `unref()` does not stop a callback from waking up the Deno
* event loop when called from foreign threads.
*
* If the callback's reference counter is zero, it no longer keeps
* Deno's process from exiting.
*/
unref(): number;
/**
* Removes the C function pointer associated with this instance.
*
* Continuing to use the instance or the C function pointer after closing
* the `UnsafeCallback` will lead to errors and crashes.
*
* Calling this method sets the callback's reference counting to zero,
* stops the callback from waking up the Deno event loop when called from
* foreign threads and no longer keeps Deno's process from exiting.
*/
close(): void;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* A dynamic library resource. Use {@linkcode Deno.dlopen} to load a dynamic
* library and return this interface.
*
* @category FFI
* @tags unstable
*/
export interface DynamicLibrary<S extends ForeignLibraryInterface> {
/** All of the registered library along with functions for calling them. */
symbols: StaticForeignLibraryInterface<S>;
/** Removes the pointers associated with the library symbols.
*
* Continuing to use symbols that are part of the library will lead to
* errors and crashes.
*
* Calling this method will also immediately set any references to zero and
* will no longer keep Deno's process from exiting.
*/
close(): void;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Opens an external dynamic library and registers symbols, making foreign
* functions available to be called.
*
* Requires `allow-ffi` permission. Loading foreign dynamic libraries can in
* theory bypass all of the sandbox permissions. While it is a separate
* permission users should acknowledge in practice that is effectively the
* same as running with the `allow-all` permission.
*
* @example Given a C library which exports a foreign function named `add()`
*
* ```ts
* // Determine library extension based on
* // your OS.
* let libSuffix = "";
* switch (Deno.build.os) {
* case "windows":
* libSuffix = "dll";
* break;
* case "darwin":
* libSuffix = "dylib";
* break;
* default:
* libSuffix = "so";
* break;
* }
*
* const libName = `./libadd.${libSuffix}`;
* // Open library and define exported symbols
* const dylib = Deno.dlopen(
* libName,
* {
* "add": { parameters: ["isize", "isize"], result: "isize" },
* } as const,
* );
*
* // Call the symbol `add`
* const result = dylib.symbols.add(35, 34); // 69
*
* console.log(`Result from external addition of 35 and 34: ${result}`);
* ```
*
* @tags allow-ffi, unstable
* @category FFI
*/
export function dlopen<const S extends ForeignLibraryInterface>(
filename: string | URL,
symbols: S,
): DynamicLibrary<S>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Creates a presentable WebGPU surface from given window and
* display handles.
*
* The parameters correspond to the table below:
*
* | system | winHandle | displayHandle |
* | ----------------- | ------------- | --------------- |
* | "cocoa" (macOS) | `NSView*` | - |
* | "win32" (Windows) | `HWND` | `HINSTANCE` |
* | "x11" (Linux) | Xlib `Window` | Xlib `Display*` |
* | "wayland" (Linux) | `wl_surface*` | `wl_display*` |
*
* @category GPU
* @tags unstable
*/
export class UnsafeWindowSurface {
constructor(
system: "cocoa" | "win32" | "x11" | "wayland",
windowHandle: Deno.PointerValue<unknown>,
displayHandle: Deno.PointerValue<unknown>,
);
getContext(context: "webgpu"): GPUCanvasContext;
present(): void;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* These are unstable options which can be used with {@linkcode Deno.run}.
*
* @category Sub Process
* @tags unstable
*/
export interface UnstableRunOptions extends RunOptions {
/** If `true`, clears the environment variables before executing the
* sub-process.
*
* @default {false} */
clearEnv?: boolean;
/** For POSIX systems, sets the group ID for the sub process. */
gid?: number;
/** For POSIX systems, sets the user ID for the sub process. */
uid?: number;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Spawns new subprocess. RunOptions must contain at a minimum the `opt.cmd`,
* an array of program arguments, the first of which is the binary.
*
* ```ts
* const p = Deno.run({
* cmd: ["curl", "https://example.com"],
* });
* const status = await p.status();
* ```
*
* Subprocess uses same working directory as parent process unless `opt.cwd`
* is specified.
*
* Environmental variables from parent process can be cleared using `opt.clearEnv`.
* Doesn't guarantee that only `opt.env` variables are present,
* as the OS may set environmental variables for processes.
*
* Environmental variables for subprocess can be specified using `opt.env`
* mapping.
*
* `opt.uid` sets the child process’s user ID. This translates to a setuid call
* in the child process. Failure in the setuid call will cause the spawn to fail.
*
* `opt.gid` is similar to `opt.uid`, but sets the group ID of the child process.
* This has the same semantics as the uid field.
*
* By default subprocess inherits stdio of parent process. To change
* this this, `opt.stdin`, `opt.stdout`, and `opt.stderr` can be set
* independently to a resource ID (_rid_) of an open file, `"inherit"`,
* `"piped"`, or `"null"`:
*
* - _number_: the resource ID of an open file/resource. This allows you to
* read or write to a file.
* - `"inherit"`: The default if unspecified. The subprocess inherits from the
* parent.
* - `"piped"`: A new pipe should be arranged to connect the parent and child
* sub-process.
* - `"null"`: This stream will be ignored. This is the equivalent of attaching
* the stream to `/dev/null`.
*
* Details of the spawned process are returned as an instance of
* {@linkcode Deno.Process}.
*
* Requires `allow-run` permission.
*
* @tags allow-run, unstable
* @category Sub Process
*/
export function run<T extends UnstableRunOptions = UnstableRunOptions>(
opt: T,
): Process<T>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* A custom `HttpClient` for use with {@linkcode fetch} function. This is
* designed to allow custom certificates or proxies to be used with `fetch()`.
*
* @example ```ts
* const caCert = await Deno.readTextFile("./ca.pem");
* const client = Deno.createHttpClient({ caCerts: [ caCert ] });
* const req = await fetch("https://myserver.com", { client });
* ```
*
* @category Fetch
* @tags unstable
*/
export interface HttpClient extends Disposable {
/** Close the HTTP client. */
close(): void;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* The options used when creating a {@linkcode Deno.HttpClient}.
*
* @category Fetch
* @tags unstable
*/
export interface CreateHttpClientOptions {
/** A list of root certificates that will be used in addition to the
* default root certificates to verify the peer's certificate.
*
* Must be in PEM format. */
caCerts?: string[];
/** A HTTP proxy to use for new connections. */
proxy?: Proxy;
/** Sets the maximum numer of idle connections per host allowed in the pool. */
poolMaxIdlePerHost?: number;
/** Set an optional timeout for idle sockets being kept-alive.
* Set to false to disable the timeout. */
poolIdleTimeout?: number | false;
/**
* Whether HTTP/1.1 is allowed or not.
*
* @default {true}
*/
http1?: boolean;
/** Whether HTTP/2 is allowed or not.
*
* @default {true}
*/
http2?: boolean;
/** Whether setting the host header is allowed or not.
*
* @default {false}
*/
allowHost?: boolean;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* The definition of a proxy when specifying
* {@linkcode Deno.CreateHttpClientOptions}.
*
* @category Fetch
* @tags unstable
*/
export interface Proxy {
/** The string URL of the proxy server to use. */
url: string;
/** The basic auth credentials to be used against the proxy server. */
basicAuth?: BasicAuth;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Basic authentication credentials to be used with a {@linkcode Deno.Proxy}
* server when specifying {@linkcode Deno.CreateHttpClientOptions}.
*
* @category Fetch
* @tags unstable
*/
export interface BasicAuth {
/** The username to be used against the proxy server. */
username: string;
/** The password to be used against the proxy server. */
password: string;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Create a custom HttpClient to use with {@linkcode fetch}. This is an
* extension of the web platform Fetch API which allows Deno to use custom
* TLS certificates and connect via a proxy while using `fetch()`.
*
* @example ```ts
* const caCert = await Deno.readTextFile("./ca.pem");
* const client = Deno.createHttpClient({ caCerts: [ caCert ] });
* const response = await fetch("https://myserver.com", { client });
* ```
*
* @example ```ts
* const client = Deno.createHttpClient({
* proxy: { url: "http://myproxy.com:8080" }
* });
* const response = await fetch("https://myserver.com", { client });
* ```
*
* @category Fetch
* @tags unstable
*/
export function createHttpClient(
options: CreateHttpClientOptions,
): HttpClient;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Create a custom HttpClient to use with {@linkcode fetch}. This is an
* extension of the web platform Fetch API which allows Deno to use custom
* TLS certificates and connect via a proxy while using `fetch()`.
*
* @example ```ts
* const caCert = await Deno.readTextFile("./ca.pem");
* // Load a client key and certificate that we'll use to connect
* const key = await Deno.readTextFile("./key.key");
* const cert = await Deno.readTextFile("./cert.crt");
* const client = Deno.createHttpClient({ caCerts: [ caCert ], key, cert });
* const response = await fetch("https://myserver.com", { client });
* ```
*
* @category Fetch
* @tags unstable
*/
export function createHttpClient(
options: CreateHttpClientOptions & TlsCertifiedKeyOptions,
): HttpClient;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Represents membership of a IPv4 multicast group.
*
* @category Network
* @tags unstable
*/
export interface MulticastV4Membership {
/** Leaves the multicast group. */
leave: () => Promise<void>;
/** Sets the multicast loopback option. If enabled, multicast packets will be looped back to the local socket. */
setLoopback: (loopback: boolean) => Promise<void>;
/** Sets the time-to-live of outgoing multicast packets for this socket. */
setTTL: (ttl: number) => Promise<void>;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Represents membership of a IPv6 multicast group.
*
* @category Network
* @tags unstable
*/
export interface MulticastV6Membership {
/** Leaves the multicast group. */
leave: () => Promise<void>;
/** Sets the multicast loopback option. If enabled, multicast packets will be looped back to the local socket. */
setLoopback: (loopback: boolean) => Promise<void>;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* A generic transport listener for message-oriented protocols.
*
* @category Network
* @tags unstable
*/
export interface DatagramConn extends AsyncIterable<[Uint8Array, Addr]> {
/** Joins an IPv4 multicast group. */
joinMulticastV4(
address: string,
networkInterface: string,
): Promise<MulticastV4Membership>;
/** Joins an IPv6 multicast group. */
joinMulticastV6(
address: string,
networkInterface: number,
): Promise<MulticastV6Membership>;
/** Waits for and resolves to the next message to the instance.
*
* Messages are received in the format of a tuple containing the data array
* and the address information.
*/
receive(p?: Uint8Array): Promise<[Uint8Array, Addr]>;
/** Sends a message to the target via the connection. The method resolves
* with the number of bytes sent. */
send(p: Uint8Array, addr: Addr): Promise<number>;
/** Close closes the socket. Any pending message promises will be rejected
* with errors. */
close(): void;
/** Return the address of the instance. */
readonly addr: Addr;
[Symbol.asyncIterator](): AsyncIterableIterator<[Uint8Array, Addr]>;
}
/**
* @category Network
* @tags unstable
*/
export interface TcpListenOptions extends ListenOptions {
/** When `true` the SO_REUSEPORT flag will be set on the listener. This
* allows multiple processes to listen on the same address and port.
*
* On Linux this will cause the kernel to distribute incoming connections
* across the different processes that are listening on the same address and
* port.
*
* This flag is only supported on Linux. It is silently ignored on other
* platforms.
*
* @default {false} */
reusePort?: boolean;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Unstable options which can be set when opening a datagram listener via
* {@linkcode Deno.listenDatagram}.
*
* @category Network
* @tags unstable
*/
export interface UdpListenOptions extends ListenOptions {
/** When `true` the specified address will be reused, even if another
* process has already bound a socket on it. This effectively steals the
* socket from the listener.
*
* @default {false} */
reuseAddress?: boolean;
/** When `true`, sent multicast packets will be looped back to the local socket.
*
* @default {false} */
loopback?: boolean;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Listen announces on the local transport address.
*
* ```ts
* const listener1 = Deno.listenDatagram({
* port: 80,
* transport: "udp"
* });
* const listener2 = Deno.listenDatagram({
* hostname: "golang.org",
* port: 80,
* transport: "udp"
* });
* ```
*
* Requires `allow-net` permission.
*
* @tags allow-net, unstable
* @category Network
*/
export function listenDatagram(
options: UdpListenOptions & { transport: "udp" },
): DatagramConn;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Listen announces on the local transport address.
*
* ```ts
* const listener = Deno.listenDatagram({
* path: "/foo/bar.sock",
* transport: "unixpacket"
* });
* ```
*
* Requires `allow-read` and `allow-write` permission.
*
* @tags allow-read, allow-write, unstable
* @category Network
*/
export function listenDatagram(
options: UnixListenOptions & { transport: "unixpacket" },
): DatagramConn;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Acquire an advisory file-system lock for the provided file.
*
* @param [exclusive=false]
* @category File System
* @tags unstable
*/
export function flock(rid: number, exclusive?: boolean): Promise<void>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Acquire an advisory file-system lock synchronously for the provided file.
*
* @param [exclusive=false]
* @category File System
* @tags unstable
*/
export function flockSync(rid: number, exclusive?: boolean): void;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Release an advisory file-system lock for the provided file.
*
* @category File System
* @tags unstable
*/
export function funlock(rid: number): Promise<void>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Release an advisory file-system lock for the provided file synchronously.
*
* @category File System
* @tags unstable
*/
export function funlockSync(rid: number): void;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Open a new {@linkcode Deno.Kv} connection to persist data.
*
* When a path is provided, the database will be persisted to disk at that
* path. Read and write access to the file is required.
*
* When no path is provided, the database will be opened in a default path for
* the current script. This location is persistent across script runs and is
* keyed on the origin storage key (the same key that is used to determine
* `localStorage` persistence). More information about the origin storage key
* can be found in the Deno Manual.
*
* @tags allow-read, allow-write, unstable
* @category Cloud
*/
export function openKv(path?: string): Promise<Deno.Kv>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* CronScheduleExpression is used as the type of `minute`, `hour`,
* `dayOfMonth`, `month`, and `dayOfWeek` in {@linkcode CronSchedule}.
* @category Cloud
* @tags unstable
*/
export type CronScheduleExpression = number | { exact: number | number[] } | {
start?: number;
end?: number;
every?: number;
};
/** **UNSTABLE**: New API, yet to be vetted.
*
* CronSchedule is the interface used for JSON format
* cron `schedule`.
* @category Cloud
* @tags unstable
*/
export interface CronSchedule {
minute?: CronScheduleExpression;
hour?: CronScheduleExpression;
dayOfMonth?: CronScheduleExpression;
month?: CronScheduleExpression;
dayOfWeek?: CronScheduleExpression;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Create a cron job that will periodically execute the provided handler
* callback based on the specified schedule.
*
* ```ts
* Deno.cron("sample cron", "20 * * * *", () => {
* console.log("cron job executed");
* });
* ```
*
* ```ts
* Deno.cron("sample cron", { hour: { every: 6 } }, () => {
* console.log("cron job executed");
* });
* ```
*
* `schedule` can be a string in the Unix cron format or in JSON format
* as specified by interface {@linkcode CronSchedule}, where time is specified
* using UTC time zone.
*
* @category Cloud
* @tags unstable
*/
export function cron(
name: string,
schedule: string | CronSchedule,
handler: () => Promise<void> | void,
): Promise<void>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Create a cron job that will periodically execute the provided handler
* callback based on the specified schedule.
*
* ```ts
* Deno.cron("sample cron", "20 * * * *", {
* backoffSchedule: [10, 20]
* }, () => {
* console.log("cron job executed");
* });
* ```
*
* `schedule` can be a string in the Unix cron format or in JSON format
* as specified by interface {@linkcode CronSchedule}, where time is specified
* using UTC time zone.
*
* `backoffSchedule` option can be used to specify the retry policy for failed
* executions. Each element in the array represents the number of milliseconds
* to wait before retrying the execution. For example, `[1000, 5000, 10000]`
* means that a failed execution will be retried at most 3 times, with 1
* second, 5 seconds, and 10 seconds delay between each retry.
*
* @category Cloud
* @tags unstable
*/
export function cron(
name: string,
schedule: string | CronSchedule,
options: { backoffSchedule?: number[]; signal?: AbortSignal },
handler: () => Promise<void> | void,
): Promise<void>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* A key to be persisted in a {@linkcode Deno.Kv}. A key is a sequence
* of {@linkcode Deno.KvKeyPart}s.
*
* Keys are ordered lexicographically by their parts. The first part is the
* most significant, and the last part is the least significant. The order of
* the parts is determined by both the type and the value of the part. The
* relative significance of the types can be found in documentation for the
* {@linkcode Deno.KvKeyPart} type.
*
* Keys have a maximum size of 2048 bytes serialized. If the size of the key
* exceeds this limit, an error will be thrown on the operation that this key
* was passed to.
*
* @category Cloud
* @tags unstable
*/
export type KvKey = readonly KvKeyPart[];
/** **UNSTABLE**: New API, yet to be vetted.
*
* A single part of a {@linkcode Deno.KvKey}. Parts are ordered
* lexicographically, first by their type, and within a given type by their
* value.
*
* The ordering of types is as follows:
*
* 1. `Uint8Array`
* 2. `string`
* 3. `number`
* 4. `bigint`
* 5. `boolean`
*
* Within a given type, the ordering is as follows:
*
* - `Uint8Array` is ordered by the byte ordering of the array
* - `string` is ordered by the byte ordering of the UTF-8 encoding of the
* string
* - `number` is ordered following this pattern: `-NaN`
* < `-Infinity` < `-100.0` < `-1.0` < -`0.5` < `-0.0` < `0.0` < `0.5`
* < `1.0` < `100.0` < `Infinity` < `NaN`
* - `bigint` is ordered by mathematical ordering, with the largest negative
* number being the least first value, and the largest positive number
* being the last value
* - `boolean` is ordered by `false` < `true`
*
* This means that the part `1.0` (a number) is ordered before the part `2.0`
* (also a number), but is greater than the part `0n` (a bigint), because
* `1.0` is a number and `0n` is a bigint, and type ordering has precedence
* over the ordering of values within a type.
*
* @category Cloud
* @tags unstable
*/
export type KvKeyPart =
| Uint8Array
| string
| number
| bigint
| boolean
| symbol;
/** **UNSTABLE**: New API, yet to be vetted.
*
* Consistency level of a KV operation.
*
* - `strong` - This operation must be strongly-consistent.
* - `eventual` - Eventually-consistent behavior is allowed.
*
* @category Cloud
* @tags unstable
*/
export type KvConsistencyLevel = "strong" | "eventual";
/** **UNSTABLE**: New API, yet to be vetted.
*
* A selector that selects the range of data returned by a list operation on a
* {@linkcode Deno.Kv}.
*
* The selector can either be a prefix selector or a range selector. A prefix
* selector selects all keys that start with the given prefix (optionally
* starting at a given key). A range selector selects all keys that are
* lexicographically between the given start and end keys.
*
* @category Cloud
* @tags unstable
*/
export type KvListSelector =
| { prefix: KvKey }
| { prefix: KvKey; start: KvKey }
| { prefix: KvKey; end: KvKey }
| { start: KvKey; end: KvKey };
/** **UNSTABLE**: New API, yet to be vetted.
*
* A mutation to a key in a {@linkcode Deno.Kv}. A mutation is a
* combination of a key, a value, and a type. The type determines how the
* mutation is applied to the key.
*
* - `set` - Sets the value of the key to the given value, overwriting any
* existing value. Optionally an `expireIn` option can be specified to
* set a time-to-live (TTL) for the key. The TTL is specified in
* milliseconds, and the key will be deleted from the database at earliest
* after the specified number of milliseconds have elapsed. Once the
* specified duration has passed, the key may still be visible for some
* additional time. If the `expireIn` option is not specified, the key will
* not expire.
* - `delete` - Deletes the key from the database. The mutation is a no-op if
* the key does not exist.
* - `sum` - Adds the given value to the existing value of the key. Both the
* value specified in the mutation, and any existing value must be of type
* `Deno.KvU64`. If the key does not exist, the value is set to the given
* value (summed with 0). If the result of the sum overflows an unsigned
* 64-bit integer, the result is wrapped around.
* - `max` - Sets the value of the key to the maximum of the existing value
* and the given value. Both the value specified in the mutation, and any
* existing value must be of type `Deno.KvU64`. If the key does not exist,
* the value is set to the given value.
* - `min` - Sets the value of the key to the minimum of the existing value
* and the given value. Both the value specified in the mutation, and any
* existing value must be of type `Deno.KvU64`. If the key does not exist,
* the value is set to the given value.
*
* @category Cloud
* @tags unstable
*/
export type KvMutation =
& { key: KvKey }
& (
| { type: "set"; value: unknown; expireIn?: number }
| { type: "delete" }
| { type: "sum"; value: KvU64 }
| { type: "max"; value: KvU64 }
| { type: "min"; value: KvU64 }
);
/** **UNSTABLE**: New API, yet to be vetted.
*
* An iterator over a range of data entries in a {@linkcode Deno.Kv}.
*
* The cursor getter returns the cursor that can be used to resume the
* iteration from the current position in the future.
*
* @category Cloud
* @tags unstable
*/
export class KvListIterator<T> implements AsyncIterableIterator<KvEntry<T>> {
/**
* Returns the cursor of the current position in the iteration. This cursor
* can be used to resume the iteration from the current position in the
* future by passing it to the `cursor` option of the `list` method.
*/
get cursor(): string;
next(): Promise<IteratorResult<KvEntry<T>, undefined>>;
[Symbol.asyncIterator](): AsyncIterableIterator<KvEntry<T>>;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* A versioned pair of key and value in a {@linkcode Deno.Kv}.
*
* The `versionstamp` is a string that represents the current version of the
* key-value pair. It can be used to perform atomic operations on the KV store
* by passing it to the `check` method of a {@linkcode Deno.AtomicOperation}.
*
* @category Cloud
* @tags unstable
*/
export type KvEntry<T> = { key: KvKey; value: T; versionstamp: string };
/**
* **UNSTABLE**: New API, yet to be vetted.
*
* An optional versioned pair of key and value in a {@linkcode Deno.Kv}.
*
* This is the same as a {@linkcode KvEntry}, but the `value` and `versionstamp`
* fields may be `null` if no value exists for the given key in the KV store.
*
* @category Cloud
* @tags unstable
*/
export type KvEntryMaybe<T> = KvEntry<T> | {
key: KvKey;
value: null;
versionstamp: null;
};
/** **UNSTABLE**: New API, yet to be vetted.
*
* Options for listing key-value pairs in a {@linkcode Deno.Kv}.
*
* @category Cloud
* @tags unstable
*/
export interface KvListOptions {
/**
* The maximum number of key-value pairs to return. If not specified, all
* matching key-value pairs will be returned.
*/
limit?: number;
/**
* The cursor to resume the iteration from. If not specified, the iteration
* will start from the beginning.
*/
cursor?: string;
/**
* Whether to reverse the order of the returned key-value pairs. If not
* specified, the order will be ascending from the start of the range as per
* the lexicographical ordering of the keys. If `true`, the order will be
* descending from the end of the range.
*
* The default value is `false`.
*/
reverse?: boolean;
/**
* The consistency level of the list operation. The default consistency
* level is "strong". Some use cases can benefit from using a weaker
* consistency level. For more information on consistency levels, see the
* documentation for {@linkcode Deno.KvConsistencyLevel}.
*
* List operations are performed in batches (in sizes specified by the
* `batchSize` option). The consistency level of the list operation is
* applied to each batch individually. This means that while each batch is
* guaranteed to be consistent within itself, the entire list operation may
* not be consistent across batches because a mutation may be applied to a
* key-value pair between batches, in a batch that has already been returned
* by the list operation.
*/
consistency?: KvConsistencyLevel;
/**
* The size of the batches in which the list operation is performed. Larger
* or smaller batch sizes may positively or negatively affect the
* performance of a list operation depending on the specific use case and
* iteration behavior. Slow iterating queries may benefit from using a
* smaller batch size for increased overall consistency, while fast
* iterating queries may benefit from using a larger batch size for better
* performance.
*
* The default batch size is equal to the `limit` option, or 100 if this is
* unset. The maximum value for this option is 500. Larger values will be
* clamped.
*/
batchSize?: number;
}
/**
* @category Cloud
* @tags unstable
*/
export interface KvCommitResult {
ok: true;
/** The versionstamp of the value committed to KV. */
versionstamp: string;
}
/**
* @category Cloud
* @tags unstable
*/
export interface KvCommitError {
ok: false;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* A check to perform as part of a {@linkcode Deno.AtomicOperation}. The check
* will fail if the versionstamp for the key-value pair in the KV store does
* not match the given versionstamp. A check with a `null` versionstamp checks
* that the key-value pair does not currently exist in the KV store.
*
* @category Cloud
* @tags unstable
*/
export interface AtomicCheck {
key: KvKey;
versionstamp: string | null;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* An operation on a {@linkcode Deno.Kv} that can be performed
* atomically. Atomic operations do not auto-commit, and must be committed
* explicitly by calling the `commit` method.
*
* Atomic operations can be used to perform multiple mutations on the KV store
* in a single atomic transaction. They can also be used to perform
* conditional mutations by specifying one or more
* {@linkcode Deno.AtomicCheck}s that ensure that a mutation is only performed
* if the key-value pair in the KV has a specific versionstamp. If any of the
* checks fail, the entire operation will fail and no mutations will be made.
*
* The ordering of mutations is guaranteed to be the same as the ordering of
* the mutations specified in the operation. Checks are performed before any
* mutations are performed. The ordering of checks is unobservable.
*
* Atomic operations can be used to implement optimistic locking, where a
* mutation is only performed if the key-value pair in the KV store has not
* been modified since the last read. This can be done by specifying a check
* that ensures that the versionstamp of the key-value pair matches the
* versionstamp that was read. If the check fails, the mutation will not be
* performed and the operation will fail. One can then retry the read-modify-
* write operation in a loop until it succeeds.
*
* The `commit` method of an atomic operation returns a value indicating
* whether checks passed and mutations were performed. If the operation failed
* because of a failed check, the return value will be a
* {@linkcode Deno.KvCommitError} with an `ok: false` property. If the
* operation failed for any other reason (storage error, invalid value, etc.),
* an exception will be thrown. If the operation succeeded, the return value
* will be a {@linkcode Deno.KvCommitResult} object with a `ok: true` property
* and the versionstamp of the value committed to KV.
*
* @category Cloud
* @tags unstable
*/
export class AtomicOperation {
/**
* Add to the operation a check that ensures that the versionstamp of the
* key-value pair in the KV store matches the given versionstamp. If the
* check fails, the entire operation will fail and no mutations will be
* performed during the commit.
*/
check(...checks: AtomicCheck[]): this;
/**
* Add to the operation a mutation that performs the specified mutation on
* the specified key if all checks pass during the commit. The types and
* semantics of all available mutations are described in the documentation
* for {@linkcode Deno.KvMutation}.
*/
mutate(...mutations: KvMutation[]): this;
/**
* Shortcut for creating a `sum` mutation. This method wraps `n` in a
* {@linkcode Deno.KvU64}, so the value of `n` must be in the range
* `[0, 2^64-1]`.
*/
sum(key: KvKey, n: bigint): this;
/**
* Shortcut for creating a `min` mutation. This method wraps `n` in a
* {@linkcode Deno.KvU64}, so the value of `n` must be in the range
* `[0, 2^64-1]`.
*/
min(key: KvKey, n: bigint): this;
/**
* Shortcut for creating a `max` mutation. This method wraps `n` in a
* {@linkcode Deno.KvU64}, so the value of `n` must be in the range
* `[0, 2^64-1]`.
*/
max(key: KvKey, n: bigint): this;
/**
* Add to the operation a mutation that sets the value of the specified key
* to the specified value if all checks pass during the commit.
*
* Optionally an `expireIn` option can be specified to set a time-to-live
* (TTL) for the key. The TTL is specified in milliseconds, and the key will
* be deleted from the database at earliest after the specified number of
* milliseconds have elapsed. Once the specified duration has passed, the
* key may still be visible for some additional time. If the `expireIn`
* option is not specified, the key will not expire.
*/
set(key: KvKey, value: unknown, options?: { expireIn?: number }): this;
/**
* Add to the operation a mutation that deletes the specified key if all
* checks pass during the commit.
*/
delete(key: KvKey): this;
/**
* Add to the operation a mutation that enqueues a value into the queue
* if all checks pass during the commit.
*/
enqueue(
value: unknown,
options?: {
delay?: number;
keysIfUndelivered?: Deno.KvKey[];
backoffSchedule?: number[];
},
): this;
/**
* Commit the operation to the KV store. Returns a value indicating whether
* checks passed and mutations were performed. If the operation failed
* because of a failed check, the return value will be a {@linkcode
* Deno.KvCommitError} with an `ok: false` property. If the operation failed
* for any other reason (storage error, invalid value, etc.), an exception
* will be thrown. If the operation succeeded, the return value will be a
* {@linkcode Deno.KvCommitResult} object with a `ok: true` property and the
* versionstamp of the value committed to KV.
*
* If the commit returns `ok: false`, one may create a new atomic operation
* with updated checks and mutations and attempt to commit it again. See the
* note on optimistic locking in the documentation for
* {@linkcode Deno.AtomicOperation}.
*/
commit(): Promise<KvCommitResult | KvCommitError>;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* A key-value database that can be used to store and retrieve data.
*
* Data is stored as key-value pairs, where the key is a {@linkcode Deno.KvKey}
* and the value is an arbitrary structured-serializable JavaScript value.
* Keys are ordered lexicographically as described in the documentation for
* {@linkcode Deno.KvKey}. Keys are unique within a database, and the last
* value set for a given key is the one that is returned when reading the
* key. Keys can be deleted from the database, in which case they will no
* longer be returned when reading keys.
*
* Values can be any structured-serializable JavaScript value (objects,
* arrays, strings, numbers, etc.). The special value {@linkcode Deno.KvU64}
* can be used to store 64-bit unsigned integers in the database. This special
* value can not be nested within other objects or arrays. In addition to the
* regular database mutation operations, the unsigned 64-bit integer value
* also supports `sum`, `max`, and `min` mutations.
*
* Keys are versioned on write by assigning the key an ever-increasing
* "versionstamp". The versionstamp represents the version of a key-value pair
* in the database at some point in time, and can be used to perform
* transactional operations on the database without requiring any locking.
* This is enabled by atomic operations, which can have conditions that ensure
* that the operation only succeeds if the versionstamp of the key-value pair
* matches an expected versionstamp.
*
* Keys have a maximum length of 2048 bytes after serialization. Values have a
* maximum length of 64 KiB after serialization. Serialization of both keys
* and values is somewhat opaque, but one can usually assume that the
* serialization of any value is about the same length as the resulting string
* of a JSON serialization of that same value. If theses limits are exceeded,
* an exception will be thrown.
*
* @category Cloud
* @tags unstable
*/
export class Kv implements Disposable {
/**
* Retrieve the value and versionstamp for the given key from the database
* in the form of a {@linkcode Deno.KvEntryMaybe}. If no value exists for
* the key, the returned entry will have a `null` value and versionstamp.
*
* ```ts
* const db = await Deno.openKv();
* const result = await db.get(["foo"]);
* result.key; // ["foo"]
* result.value; // "bar"
* result.versionstamp; // "00000000000000010000"
* ```
*
* The `consistency` option can be used to specify the consistency level
* for the read operation. The default consistency level is "strong". Some
* use cases can benefit from using a weaker consistency level. For more
* information on consistency levels, see the documentation for
* {@linkcode Deno.KvConsistencyLevel}.
*/
get<T = unknown>(
key: KvKey,
options?: { consistency?: KvConsistencyLevel },
): Promise<KvEntryMaybe<T>>;
/**
* Retrieve multiple values and versionstamps from the database in the form
* of an array of {@linkcode Deno.KvEntryMaybe} objects. The returned array
* will have the same length as the `keys` array, and the entries will be in
* the same order as the keys. If no value exists for a given key, the
* returned entry will have a `null` value and versionstamp.
*
* ```ts
* const db = await Deno.openKv();
* const result = await db.getMany([["foo"], ["baz"]]);
* result[0].key; // ["foo"]
* result[0].value; // "bar"
* result[0].versionstamp; // "00000000000000010000"
* result[1].key; // ["baz"]
* result[1].value; // null
* result[1].versionstamp; // null
* ```
*
* The `consistency` option can be used to specify the consistency level
* for the read operation. The default consistency level is "strong". Some
* use cases can benefit from using a weaker consistency level. For more
* information on consistency levels, see the documentation for
* {@linkcode Deno.KvConsistencyLevel}.
*/
getMany<T extends readonly unknown[]>(
keys: readonly [...{ [K in keyof T]: KvKey }],
options?: { consistency?: KvConsistencyLevel },
): Promise<{ [K in keyof T]: KvEntryMaybe<T[K]> }>;
/**
* Set the value for the given key in the database. If a value already
* exists for the key, it will be overwritten.
*
* ```ts
* const db = await Deno.openKv();
* await db.set(["foo"], "bar");
* ```
*
* Optionally an `expireIn` option can be specified to set a time-to-live
* (TTL) for the key. The TTL is specified in milliseconds, and the key will
* be deleted from the database at earliest after the specified number of
* milliseconds have elapsed. Once the specified duration has passed, the
* key may still be visible for some additional time. If the `expireIn`
* option is not specified, the key will not expire.
*/
set(
key: KvKey,
value: unknown,
options?: { expireIn?: number },
): Promise<KvCommitResult>;
/**
* Delete the value for the given key from the database. If no value exists
* for the key, this operation is a no-op.
*
* ```ts
* const db = await Deno.openKv();
* await db.delete(["foo"]);
* ```
*/
delete(key: KvKey): Promise<void>;
/**
* Retrieve a list of keys in the database. The returned list is an
* {@linkcode Deno.KvListIterator} which can be used to iterate over the
* entries in the database.
*
* Each list operation must specify a selector which is used to specify the
* range of keys to return. The selector can either be a prefix selector, or
* a range selector:
*
* - A prefix selector selects all keys that start with the given prefix of
* key parts. For example, the selector `["users"]` will select all keys
* that start with the prefix `["users"]`, such as `["users", "alice"]`
* and `["users", "bob"]`. Note that you can not partially match a key
* part, so the selector `["users", "a"]` will not match the key
* `["users", "alice"]`. A prefix selector may specify a `start` key that
* is used to skip over keys that are lexicographically less than the
* start key.
* - A range selector selects all keys that are lexicographically between
* the given start and end keys (including the start, and excluding the
* end). For example, the selector `["users", "a"], ["users", "n"]` will
* select all keys that start with the prefix `["users"]` and have a
* second key part that is lexicographically between `a` and `n`, such as
* `["users", "alice"]`, `["users", "bob"]`, and `["users", "mike"]`, but
* not `["users", "noa"]` or `["users", "zoe"]`.
*
* ```ts
* const db = await Deno.openKv();
* const entries = db.list({ prefix: ["users"] });
* for await (const entry of entries) {
* entry.key; // ["users", "alice"]
* entry.value; // { name: "Alice" }
* entry.versionstamp; // "00000000000000010000"
* }
* ```
*
* The `options` argument can be used to specify additional options for the
* list operation. See the documentation for {@linkcode Deno.KvListOptions}
* for more information.
*/
list<T = unknown>(
selector: KvListSelector,
options?: KvListOptions,
): KvListIterator<T>;
/**
* Add a value into the database queue to be delivered to the queue
* listener via {@linkcode Deno.Kv.listenQueue}.
*
* ```ts
* const db = await Deno.openKv();
* await db.enqueue("bar");
* ```
*
* The `delay` option can be used to specify the delay (in milliseconds)
* of the value delivery. The default delay is 0, which means immediate
* delivery.
*
* ```ts
* const db = await Deno.openKv();
* await db.enqueue("bar", { delay: 60000 });
* ```
*
* The `keysIfUndelivered` option can be used to specify the keys to
* be set if the value is not successfully delivered to the queue
* listener after several attempts. The values are set to the value of
* the queued message.
*
* The `backoffSchedule` option can be used to specify the retry policy for
* failed message delivery. Each element in the array represents the number of
* milliseconds to wait before retrying the delivery. For example,
* `[1000, 5000, 10000]` means that a failed delivery will be retried
* at most 3 times, with 1 second, 5 seconds, and 10 seconds delay
* between each retry.
*
* ```ts
* const db = await Deno.openKv();
* await db.enqueue("bar", {
* keysIfUndelivered: [["foo", "bar"]],
* backoffSchedule: [1000, 5000, 10000],
* });
* ```
*/
enqueue(
value: unknown,
options?: {
delay?: number;
keysIfUndelivered?: Deno.KvKey[];
backoffSchedule?: number[];
},
): Promise<KvCommitResult>;
/**
* Listen for queue values to be delivered from the database queue, which
* were enqueued with {@linkcode Deno.Kv.enqueue}. The provided handler
* callback is invoked on every dequeued value. A failed callback
* invocation is automatically retried multiple times until it succeeds
* or until the maximum number of retries is reached.
*
* ```ts
* const db = await Deno.openKv();
* db.listenQueue(async (msg: unknown) => {
* await db.set(["foo"], msg);
* });
* ```
*/
// deno-lint-ignore no-explicit-any
listenQueue(handler: (value: any) => Promise<void> | void): Promise<void>;
/**
* Create a new {@linkcode Deno.AtomicOperation} object which can be used to
* perform an atomic transaction on the database. This does not perform any
* operations on the database - the atomic transaction must be committed
* explicitly using the {@linkcode Deno.AtomicOperation.commit} method once
* all checks and mutations have been added to the operation.
*/
atomic(): AtomicOperation;
/**
* Watch for changes to the given keys in the database. The returned stream
* is a {@linkcode ReadableStream} that emits a new value whenever any of
* the watched keys change their versionstamp. The emitted value is an array
* of {@linkcode Deno.KvEntryMaybe} objects, with the same length and order
* as the `keys` array. If no value exists for a given key, the returned
* entry will have a `null` value and versionstamp.
*
* The returned stream does not return every single intermediate state of
* the watched keys, but rather only keeps you up to date with the latest
* state of the keys. This means that if a key is modified multiple times
* quickly, you may not receive a notification for every single change, but
* rather only the latest state of the key.
*
* ```ts
* const db = await Deno.openKv();
*
* const stream = db.watch([["foo"], ["bar"]]);
* for await (const entries of stream) {
* entries[0].key; // ["foo"]
* entries[0].value; // "bar"
* entries[0].versionstamp; // "00000000000000010000"
* entries[1].key; // ["bar"]
* entries[1].value; // null
* entries[1].versionstamp; // null
* }
* ```
*
* The `options` argument can be used to specify additional options for the
* watch operation. The `raw` option can be used to specify whether a new
* value should be emitted whenever a mutation occurs on any of the watched
* keys (even if the value of the key does not change, such as deleting a
* deleted key), or only when entries have observably changed in some way.
* When `raw: true` is used, it is possible for the stream to occasionally
* emit values even if no mutations have occurred on any of the watched
* keys. The default value for this option is `false`.
*/
watch<T extends readonly unknown[]>(
keys: readonly [...{ [K in keyof T]: KvKey }],
options?: { raw?: boolean },
): ReadableStream<{ [K in keyof T]: KvEntryMaybe<T[K]> }>;
/**
* Close the database connection. This will prevent any further operations
* from being performed on the database, and interrupt any in-flight
* operations immediately.
*/
close(): void;
/**
* Get a symbol that represents the versionstamp of the current atomic
* operation. This symbol can be used as the last part of a key in
* `.set()`, both directly on the `Kv` object and on an `AtomicOperation`
* object created from this `Kv` instance.
*/
commitVersionstamp(): symbol;
[Symbol.dispose](): void;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* Wrapper type for 64-bit unsigned integers for use as values in a
* {@linkcode Deno.Kv}.
*
* @category Cloud
* @tags unstable
*/
export class KvU64 {
/** Create a new `KvU64` instance from the given bigint value. If the value
* is signed or greater than 64-bits, an error will be thrown. */
constructor(value: bigint);
/** The value of this unsigned 64-bit integer, represented as a bigint. */
readonly value: bigint;
}
/**
* A namespace containing runtime APIs available in Jupyter notebooks.
*
* When accessed outside of Jupyter notebook context an error will be thrown.
*
* @category Jupyter
* @tags unstable
*/
export namespace jupyter {
/**
* @category Jupyter
* @tags unstable
*/
export interface DisplayOptions {
raw?: boolean;
update?: boolean;
display_id?: string;
}
/**
* @category Jupyter
* @tags unstable
*/
export type VegaObject = {
$schema: string;
[key: string]: unknown;
};
/**
* A collection of supported media types and data for Jupyter frontends.
*
* @category Jupyter
* @tags unstable
*/
export type MediaBundle = {
"text/plain"?: string;
"text/html"?: string;
"image/svg+xml"?: string;
"text/markdown"?: string;
"application/javascript"?: string;
// Images (per Jupyter spec) must be base64 encoded. We could _allow_
// accepting Uint8Array or ArrayBuffer within `display` calls, however we still
// must encode them for jupyter.
"image/png"?: string; // WISH: Uint8Array | ArrayBuffer
"image/jpeg"?: string; // WISH: Uint8Array | ArrayBuffer
"image/gif"?: string; // WISH: Uint8Array | ArrayBuffer
"application/pdf"?: string; // WISH: Uint8Array | ArrayBuffer
// NOTE: all JSON types must be objects at the top level (no arrays, strings, or other primitives)
"application/json"?: object;
"application/geo+json"?: object;
"application/vdom.v1+json"?: object;
"application/vnd.plotly.v1+json"?: object;
"application/vnd.vega.v5+json"?: VegaObject;
"application/vnd.vegalite.v4+json"?: VegaObject;
"application/vnd.vegalite.v5+json"?: VegaObject;
// Must support a catch all for custom media types / mimetypes
[key: string]: string | object | undefined;
};
/**
* @category Jupyter
* @tags unstable
*/
export const $display: unique symbol;
/**
* @category Jupyter
* @tags unstable
*/
export type Displayable = {
[$display]: () => MediaBundle | Promise<MediaBundle>;
};
/**
* Display function for Jupyter Deno Kernel.
* Mimics the behavior of IPython's `display(obj, raw=True)` function to allow
* asynchronous displaying of objects in Jupyter.
*
* @param obj - The object to be displayed
* @param options - Display options with a default { raw: true }
* @category Jupyter
* @tags unstable
*/
export function display(obj: unknown, options?: DisplayOptions): void;
/**
* Show Markdown in Jupyter frontends with a tagged template function.
*
* Takes a template string and returns a displayable object for Jupyter frontends.
*
* @example
* Create a Markdown view.
*
* ```typescript
* const { md } = Deno.jupyter;
* md`# Notebooks in TypeScript via Deno ![Deno logo](https://github.com/denoland.png?size=32)
*
* * TypeScript ${Deno.version.typescript}
* * V8 ${Deno.version.v8}
* * Deno ${Deno.version.deno}
*
* Interactive compute with Jupyter _built into Deno_!
* `
* ```
*
* @category Jupyter
* @tags unstable
*/
export function md(
strings: TemplateStringsArray,
...values: unknown[]
): Displayable;
/**
* Show HTML in Jupyter frontends with a tagged template function.
*
* Takes a template string and returns a displayable object for Jupyter frontends.
*
* @example
* Create an HTML view.
* ```typescript
* const { html } = Deno.jupyter;
* html`<h1>Hello, world!</h1>`
* ```
*
* @category Jupyter
* @tags unstable
*/
export function html(
strings: TemplateStringsArray,
...values: unknown[]
): Displayable;
/**
* SVG Tagged Template Function.
*
* Takes a template string and returns a displayable object for Jupyter frontends.
*
* Example usage:
*
* svg`<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
* <circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="yellow" />
* </svg>`
*
* @category Jupyter
* @tags unstable
*/
export function svg(
strings: TemplateStringsArray,
...values: unknown[]
): Displayable;
/**
* Format an object for displaying in Deno
*
* @param obj - The object to be displayed
* @returns MediaBundle
*
* @category Jupyter
* @tags unstable
*/
export function format(obj: unknown): MediaBundle;
/**
* Broadcast a message on IO pub channel.
*
* ```
* await Deno.jupyter.broadcast("display_data", {
* data: { "text/html": "<b>Processing.</b>" },
* metadata: {},
* transient: { display_id: "progress" }
* });
*
* await new Promise((resolve) => setTimeout(resolve, 500));
*
* await Deno.jupyter.broadcast("update_display_data", {
* data: { "text/html": "<b>Processing..</b>" },
* metadata: {},
* transient: { display_id: "progress" }
* });
* ```
*
* @category Jupyter
* @tags unstable
*/
export function broadcast(
msgType: string,
content: Record<string, unknown>,
extra?: {
metadata?: Record<string, unknown>;
buffers?: Uint8Array[];
},
): Promise<void>;
}
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* The [Fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API)
* which also supports setting a {@linkcode Deno.HttpClient} which provides a
* way to connect via proxies and use custom TLS certificates.
*
* @tags allow-net, allow-read, unstable
* @category Fetch
*/
declare function fetch(
input: Request | URL | string,
init?: RequestInit & { client: Deno.HttpClient },
): Promise<Response>;
/** **UNSTABLE**: New API, yet to be vetted.
*
* @category Workers
* @tags unstable
*/
declare interface WorkerOptions {
/** **UNSTABLE**: New API, yet to be vetted.
*
* Configure permissions options to change the level of access the worker will
* have. By default it will have no permissions. Note that the permissions
* of a worker can't be extended beyond its parent's permissions reach.
*
* - `"inherit"` will take the permissions of the thread the worker is created
* in.
* - `"none"` will use the default behavior and have no permission
* - A list of routes can be provided that are relative to the file the worker
* is created in to limit the access of the worker (read/write permissions
* only)
*
* Example:
*
* ```ts
* // mod.ts
* const worker = new Worker(
* new URL("deno_worker.ts", import.meta.url).href, {
* type: "module",
* deno: {
* permissions: {
* read: true,
* },
* },
* }
* );
* ```
*/
deno?: {
/** Set to `"none"` to disable all the permissions in the worker. */
permissions?: Deno.PermissionOptions;
};
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* @category WebSockets
* @tags unstable
*/
declare interface WebSocketStreamOptions {
protocols?: string[];
signal?: AbortSignal;
headers?: HeadersInit;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* @category WebSockets
* @tags unstable
*/
declare interface WebSocketConnection {
readable: ReadableStream<string | Uint8Array>;
writable: WritableStream<string | Uint8Array>;
extensions: string;
protocol: string;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* @category WebSockets
* @tags unstable
*/
declare interface WebSocketCloseInfo {
code?: number;
reason?: string;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* @tags allow-net, unstable
* @category WebSockets
*/
declare interface WebSocketStream {
url: string;
opened: Promise<WebSocketConnection>;
closed: Promise<WebSocketCloseInfo>;
close(closeInfo?: WebSocketCloseInfo): void;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* @tags allow-net, unstable
* @category WebSockets
*/
declare var WebSocketStream: {
readonly prototype: WebSocketStream;
new (url: string, options?: WebSocketStreamOptions): WebSocketStream;
};
/** **UNSTABLE**: New API, yet to be vetted.
*
* @tags allow-net, unstable
* @category WebSockets
*/
declare interface WebSocketError extends DOMException {
readonly closeCode: number;
readonly reason: string;
}
/** **UNSTABLE**: New API, yet to be vetted.
*
* @tags allow-net, unstable
* @category WebSockets
*/
declare var WebSocketError: {
readonly prototype: WebSocketError;
new (message?: string, init?: WebSocketCloseInfo): WebSocketError;
};
// Adapted from `tc39/proposal-temporal`: https://github.com/tc39/proposal-temporal/blob/main/polyfill/index.d.ts
/**
* [Specification](https://tc39.es/proposal-temporal/docs/index.html)
*
* @category Temporal
* @tags unstable
*/
declare namespace Temporal {
/**
* @category Temporal
* @tags unstable
*/
export type ComparisonResult = -1 | 0 | 1;
/**
* @category Temporal
* @tags unstable
*/
export type RoundingMode =
| "ceil"
| "floor"
| "expand"
| "trunc"
| "halfCeil"
| "halfFloor"
| "halfExpand"
| "halfTrunc"
| "halfEven";
/**
* Options for assigning fields using `with()` or entire objects with
* `from()`.
*
* @category Temporal
* @tags unstable
*/
export type AssignmentOptions = {
/**
* How to deal with out-of-range values
*
* - In `'constrain'` mode, out-of-range values are clamped to the nearest
* in-range value.
* - In `'reject'` mode, out-of-range values will cause the function to
* throw a RangeError.
*
* The default is `'constrain'`.
*/
overflow?: "constrain" | "reject";
};
/**
* Options for assigning fields using `Duration.prototype.with()` or entire
* objects with `Duration.from()`, and for arithmetic with
* `Duration.prototype.add()` and `Duration.prototype.subtract()`.
*
* @category Temporal
* @tags unstable
*/
export type DurationOptions = {
/**
* How to deal with out-of-range values
*
* - In `'constrain'` mode, out-of-range values are clamped to the nearest
* in-range value.
* - In `'balance'` mode, out-of-range values are resolved by balancing them
* with the next highest unit.
*
* The default is `'constrain'`.
*/
overflow?: "constrain" | "balance";
};
/**
* Options for conversions of `Temporal.PlainDateTime` to `Temporal.Instant`
*
* @category Temporal
* @tags unstable
*/
export type ToInstantOptions = {
/**
* Controls handling of invalid or ambiguous times caused by time zone
* offset changes like Daylight Saving time (DST) transitions.
*
* This option is only relevant if a `DateTime` value does not exist in the
* destination time zone (e.g. near "Spring Forward" DST transitions), or
* exists more than once (e.g. near "Fall Back" DST transitions).
*
* In case of ambiguous or nonexistent times, this option controls what
* exact time to return:
* - `'compatible'`: Equivalent to `'earlier'` for backward transitions like
* the start of DST in the Spring, and `'later'` for forward transitions
* like the end of DST in the Fall. This matches the behavior of legacy
* `Date`, of libraries like moment.js, Luxon, or date-fns, and of
* cross-platform standards like [RFC 5545
* (iCalendar)](https://tools.ietf.org/html/rfc5545).
* - `'earlier'`: The earlier time of two possible times
* - `'later'`: The later of two possible times
* - `'reject'`: Throw a RangeError instead
*
* The default is `'compatible'`.
*/
disambiguation?: "compatible" | "earlier" | "later" | "reject";
};
/**
* @category Temporal
* @tags unstable
*/
export type OffsetDisambiguationOptions = {
/**
* Time zone definitions can change. If an application stores data about
* events in the future, then stored data about future events may become
* ambiguous, for example if a country permanently abolishes DST. The
* `offset` option controls this unusual case.
*
* - `'use'` always uses the offset (if it's provided) to calculate the
* instant. This ensures that the result will match the instant that was
* originally stored, even if local clock time is different.
* - `'prefer'` uses the offset if it's valid for the date/time in this time
* zone, but if it's not valid then the time zone will be used as a
* fallback to calculate the instant.
* - `'ignore'` will disregard any provided offset. Instead, the time zone
* and date/time value are used to calculate the instant. This will keep
* local clock time unchanged but may result in a different real-world
* instant.
* - `'reject'` acts like `'prefer'`, except it will throw a RangeError if
* the offset is not valid for the given time zone identifier and
* date/time value.
*
* If the ISO string ends in 'Z' then this option is ignored because there
* is no possibility of ambiguity.
*
* If a time zone offset is not present in the input, then this option is
* ignored because the time zone will always be used to calculate the
* offset.
*
* If the offset is not used, and if the date/time and time zone don't
* uniquely identify a single instant, then the `disambiguation` option will
* be used to choose the correct instant. However, if the offset is used
* then the `disambiguation` option will be ignored.
*/
offset?: "use" | "prefer" | "ignore" | "reject";
};
/**
* @category Temporal
* @tags unstable
*/
export type ZonedDateTimeAssignmentOptions = Partial<
AssignmentOptions & ToInstantOptions & OffsetDisambiguationOptions
>;
/**
* Options for arithmetic operations like `add()` and `subtract()`
*
* @category Temporal
* @tags unstable
*/
export type ArithmeticOptions = {
/**
* Controls handling of out-of-range arithmetic results.
*
* If a result is out of range, then `'constrain'` will clamp the result to
* the allowed range, while `'reject'` will throw a RangeError.
*
* The default is `'constrain'`.
*/
overflow?: "constrain" | "reject";
};
/**
* @category Temporal
* @tags unstable
*/
export type DateUnit = "year" | "month" | "week" | "day";
/**
* @category Temporal
* @tags unstable
*/
export type TimeUnit =
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond";
/**
* @category Temporal
* @tags unstable
*/
export type DateTimeUnit = DateUnit | TimeUnit;
/**
* When the name of a unit is provided to a Temporal API as a string, it is
* usually singular, e.g. 'day' or 'hour'. But plural unit names like 'days'
* or 'hours' are aso accepted too.
*
* @category Temporal
* @tags unstable
*/
export type PluralUnit<T extends DateTimeUnit> = {
year: "years";
month: "months";
week: "weeks";
day: "days";
hour: "hours";
minute: "minutes";
second: "seconds";
millisecond: "milliseconds";
microsecond: "microseconds";
nanosecond: "nanoseconds";
}[T];
/**
* @category Temporal
* @tags unstable
*/
export type LargestUnit<T extends DateTimeUnit> = "auto" | T | PluralUnit<T>;
/**
* @category Temporal
* @tags unstable
*/
export type SmallestUnit<T extends DateTimeUnit> = T | PluralUnit<T>;
/**
* @category Temporal
* @tags unstable
*/
export type TotalUnit<T extends DateTimeUnit> = T | PluralUnit<T>;
/**
* Options for outputting precision in toString() on types with seconds
*
* @category Temporal
* @tags unstable
*/
export type ToStringPrecisionOptions = {
fractionalSecondDigits?: "auto" | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
smallestUnit?: SmallestUnit<
"minute" | "second" | "millisecond" | "microsecond" | "nanosecond"
>;
/**
* Controls how rounding is performed:
* - `halfExpand`: Round to the nearest of the values allowed by
* `roundingIncrement` and `smallestUnit`. When there is a tie, round up.
* This mode is the default.
* - `ceil`: Always round up, towards the end of time.
* - `trunc`: Always round down, towards the beginning of time.
* - `floor`: Also round down, towards the beginning of time. This mode acts
* the same as `trunc`, but it's included for consistency with
* `Temporal.Duration.round()` where negative values are allowed and
* `trunc` rounds towards zero, unlike `floor` which rounds towards
* negative infinity which is usually unexpected. For this reason, `trunc`
* is recommended for most use cases.
*/
roundingMode?: RoundingMode;
};
/**
* @category Temporal
* @tags unstable
*/
export type ShowCalendarOption = {
calendarName?: "auto" | "always" | "never" | "critical";
};
/**
* @category Temporal
* @tags unstable
*/
export type CalendarTypeToStringOptions = Partial<
ToStringPrecisionOptions & ShowCalendarOption
>;
/**
* @category Temporal
* @tags unstable
*/
export type ZonedDateTimeToStringOptions = Partial<
CalendarTypeToStringOptions & {
timeZoneName?: "auto" | "never" | "critical";
offset?: "auto" | "never";
}
>;
/**
* @category Temporal
* @tags unstable
*/
export type InstantToStringOptions = Partial<
ToStringPrecisionOptions & {
timeZone: TimeZoneLike;
}
>;
/**
* Options to control the result of `until()` and `since()` methods in
* `Temporal` types.
*
* @category Temporal
* @tags unstable
*/
export interface DifferenceOptions<T extends DateTimeUnit> {
/**
* The unit to round to. For example, to round to the nearest minute, use
* `smallestUnit: 'minute'`. This property is optional for `until()` and
* `since()`, because those methods default behavior is not to round.
* However, the same property is required for `round()`.
*/
smallestUnit?: SmallestUnit<T>;
/**
* The largest unit to allow in the resulting `Temporal.Duration` object.
*
* Larger units will be "balanced" into smaller units. For example, if
* `largestUnit` is `'minute'` then a two-hour duration will be output as a
* 120-minute duration.
*
* Valid values may include `'year'`, `'month'`, `'week'`, `'day'`,
* `'hour'`, `'minute'`, `'second'`, `'millisecond'`, `'microsecond'`,
* `'nanosecond'` and `'auto'`, although some types may throw an exception
* if a value is used that would produce an invalid result. For example,
* `hours` is not accepted by `Temporal.PlainDate.prototype.since()`.
*
* The default is always `'auto'`, though the meaning of this depends on the
* type being used.
*/
largestUnit?: LargestUnit<T>;
/**
* Allows rounding to an integer number of units. For example, to round to
* increments of a half hour, use `{ smallestUnit: 'minute',
* roundingIncrement: 30 }`.
*/
roundingIncrement?: number;
/**
* Controls how rounding is performed:
* - `halfExpand`: Round to the nearest of the values allowed by
* `roundingIncrement` and `smallestUnit`. When there is a tie, round away
* from zero like `ceil` for positive durations and like `floor` for
* negative durations.
* - `ceil`: Always round up, towards the end of time.
* - `trunc`: Always round down, towards the beginning of time. This mode is
* the default.
* - `floor`: Also round down, towards the beginning of time. This mode acts
* the same as `trunc`, but it's included for consistency with
* `Temporal.Duration.round()` where negative values are allowed and
* `trunc` rounds towards zero, unlike `floor` which rounds towards
* negative infinity which is usually unexpected. For this reason, `trunc`
* is recommended for most use cases.
*/
roundingMode?: RoundingMode;
}
/**
* `round` methods take one required parameter. If a string is provided, the
* resulting `Temporal.Duration` object will be rounded to that unit. If an
* object is provided, its `smallestUnit` property is required while other
* properties are optional. A string is treated the same as an object whose
* `smallestUnit` property value is that string.
*
* @category Temporal
* @tags unstable
*/
export type RoundTo<T extends DateTimeUnit> =
| SmallestUnit<T>
| {
/**
* The unit to round to. For example, to round to the nearest minute,
* use `smallestUnit: 'minute'`. This option is required. Note that the
* same-named property is optional when passed to `until` or `since`
* methods, because those methods do no rounding by default.
*/
smallestUnit: SmallestUnit<T>;
/**
* Allows rounding to an integer number of units. For example, to round to
* increments of a half hour, use `{ smallestUnit: 'minute',
* roundingIncrement: 30 }`.
*/
roundingIncrement?: number;
/**
* Controls how rounding is performed:
* - `halfExpand`: Round to the nearest of the values allowed by
* `roundingIncrement` and `smallestUnit`. When there is a tie, round up.
* This mode is the default.
* - `ceil`: Always round up, towards the end of time.
* - `trunc`: Always round down, towards the beginning of time.
* - `floor`: Also round down, towards the beginning of time. This mode acts
* the same as `trunc`, but it's included for consistency with
* `Temporal.Duration.round()` where negative values are allowed and
* `trunc` rounds towards zero, unlike `floor` which rounds towards
* negative infinity which is usually unexpected. For this reason, `trunc`
* is recommended for most use cases.
*/
roundingMode?: RoundingMode;
};
/**
* The `round` method of the `Temporal.Duration` accepts one required
* parameter. If a string is provided, the resulting `Temporal.Duration`
* object will be rounded to that unit. If an object is provided, the
* `smallestUnit` and/or `largestUnit` property is required, while other
* properties are optional. A string parameter is treated the same as an
* object whose `smallestUnit` property value is that string.
*
* @category Temporal
* @tags unstable
*/
export type DurationRoundTo =
| SmallestUnit<DateTimeUnit>
| (
& (
| {
/**
* The unit to round to. For example, to round to the nearest
* minute, use `smallestUnit: 'minute'`. This property is normally
* required, but is optional if `largestUnit` is provided and not
* undefined.
*/
smallestUnit: SmallestUnit<DateTimeUnit>;
/**
* The largest unit to allow in the resulting `Temporal.Duration`
* object.
*
* Larger units will be "balanced" into smaller units. For example,
* if `largestUnit` is `'minute'` then a two-hour duration will be
* output as a 120-minute duration.
*
* Valid values include `'year'`, `'month'`, `'week'`, `'day'`,
* `'hour'`, `'minute'`, `'second'`, `'millisecond'`,
* `'microsecond'`, `'nanosecond'` and `'auto'`.
*
* The default is `'auto'`, which means "the largest nonzero unit in
* the input duration". This default prevents expanding durations to
* larger units unless the caller opts into this behavior.
*
* If `smallestUnit` is larger, then `smallestUnit` will be used as
* `largestUnit`, superseding a caller-supplied or default value.
*/
largestUnit?: LargestUnit<DateTimeUnit>;
}
| {
/**
* The unit to round to. For example, to round to the nearest
* minute, use `smallestUnit: 'minute'`. This property is normally
* required, but is optional if `largestUnit` is provided and not
* undefined.
*/
smallestUnit?: SmallestUnit<DateTimeUnit>;
/**
* The largest unit to allow in the resulting `Temporal.Duration`
* object.
*
* Larger units will be "balanced" into smaller units. For example,
* if `largestUnit` is `'minute'` then a two-hour duration will be
* output as a 120-minute duration.
*
* Valid values include `'year'`, `'month'`, `'week'`, `'day'`,
* `'hour'`, `'minute'`, `'second'`, `'millisecond'`,
* `'microsecond'`, `'nanosecond'` and `'auto'`.
*
* The default is `'auto'`, which means "the largest nonzero unit in
* the input duration". This default prevents expanding durations to
* larger units unless the caller opts into this behavior.
*
* If `smallestUnit` is larger, then `smallestUnit` will be used as
* `largestUnit`, superseding a caller-supplied or default value.
*/
largestUnit: LargestUnit<DateTimeUnit>;
}
)
& {
/**
* Allows rounding to an integer number of units. For example, to round
* to increments of a half hour, use `{ smallestUnit: 'minute',
* roundingIncrement: 30 }`.
*/
roundingIncrement?: number;
/**
* Controls how rounding is performed:
* - `halfExpand`: Round to the nearest of the values allowed by
* `roundingIncrement` and `smallestUnit`. When there is a tie, round
* away from zero like `ceil` for positive durations and like `floor`
* for negative durations. This mode is the default.
* - `ceil`: Always round towards positive infinity. For negative
* durations this option will decrease the absolute value of the
* duration which may be unexpected. To round away from zero, use
* `ceil` for positive durations and `floor` for negative durations.
* - `trunc`: Always round down towards zero.
* - `floor`: Always round towards negative infinity. This mode acts the
* same as `trunc` for positive durations but for negative durations
* it will increase the absolute value of the result which may be
* unexpected. For this reason, `trunc` is recommended for most "round
* down" use cases.
*/
roundingMode?: RoundingMode;
/**
* The starting point to use for rounding and conversions when
* variable-length units (years, months, weeks depending on the
* calendar) are involved. This option is required if any of the
* following are true:
* - `unit` is `'week'` or larger units
* - `this` has a nonzero value for `weeks` or larger units
*
* This value must be either a `Temporal.PlainDateTime`, a
* `Temporal.ZonedDateTime`, or a string or object value that can be
* passed to `from()` of those types. Examples:
* - `'2020-01'01T00:00-08:00[America/Los_Angeles]'`
* - `'2020-01'01'`
* - `Temporal.PlainDate.from('2020-01-01')`
*
* `Temporal.ZonedDateTime` will be tried first because it's more
* specific, with `Temporal.PlainDateTime` as a fallback.
*
* If the value resolves to a `Temporal.ZonedDateTime`, then operation
* will adjust for DST and other time zone transitions. Otherwise
* (including if this option is omitted), then the operation will ignore
* time zone transitions and all days will be assumed to be 24 hours
* long.
*/
relativeTo?:
| Temporal.PlainDateTime
| Temporal.ZonedDateTime
| PlainDateTimeLike
| ZonedDateTimeLike
| string;
}
);
/**
* Options to control behavior of `Duration.prototype.total()`
*
* @category Temporal
* @tags unstable
*/
export type DurationTotalOf =
| TotalUnit<DateTimeUnit>
| {
/**
* The unit to convert the duration to. This option is required.
*/
unit: TotalUnit<DateTimeUnit>;
/**
* The starting point to use when variable-length units (years, months,
* weeks depending on the calendar) are involved. This option is required if
* any of the following are true:
* - `unit` is `'week'` or larger units
* - `this` has a nonzero value for `weeks` or larger units
*
* This value must be either a `Temporal.PlainDateTime`, a
* `Temporal.ZonedDateTime`, or a string or object value that can be passed
* to `from()` of those types. Examples:
* - `'2020-01'01T00:00-08:00[America/Los_Angeles]'`
* - `'2020-01'01'`
* - `Temporal.PlainDate.from('2020-01-01')`
*
* `Temporal.ZonedDateTime` will be tried first because it's more
* specific, with `Temporal.PlainDateTime` as a fallback.
*
* If the value resolves to a `Temporal.ZonedDateTime`, then operation will
* adjust for DST and other time zone transitions. Otherwise (including if
* this option is omitted), then the operation will ignore time zone
* transitions and all days will be assumed to be 24 hours long.
*/
relativeTo?:
| Temporal.ZonedDateTime
| Temporal.PlainDateTime
| ZonedDateTimeLike
| PlainDateTimeLike
| string;
};
/**
* Options to control behavior of `Duration.compare()`, `Duration.add()`, and
* `Duration.subtract()`
*
* @category Temporal
* @tags unstable
*/
export interface DurationArithmeticOptions {
/**
* The starting point to use when variable-length units (years, months,
* weeks depending on the calendar) are involved. This option is required if
* either of the durations has a nonzero value for `weeks` or larger units.
*
* This value must be either a `Temporal.PlainDateTime`, a
* `Temporal.ZonedDateTime`, or a string or object value that can be passed
* to `from()` of those types. Examples:
* - `'2020-01'01T00:00-08:00[America/Los_Angeles]'`
* - `'2020-01'01'`
* - `Temporal.PlainDate.from('2020-01-01')`
*
* `Temporal.ZonedDateTime` will be tried first because it's more
* specific, with `Temporal.PlainDateTime` as a fallback.
*
* If the value resolves to a `Temporal.ZonedDateTime`, then operation will
* adjust for DST and other time zone transitions. Otherwise (including if
* this option is omitted), then the operation will ignore time zone
* transitions and all days will be assumed to be 24 hours long.
*/
relativeTo?:
| Temporal.ZonedDateTime
| Temporal.PlainDateTime
| ZonedDateTimeLike
| PlainDateTimeLike
| string;
}
/**
* @category Temporal
* @tags unstable
*/
export type DurationLike = {
years?: number;
months?: number;
weeks?: number;
days?: number;
hours?: number;
minutes?: number;
seconds?: number;
milliseconds?: number;
microseconds?: number;
nanoseconds?: number;
};
/**
* A `Temporal.Duration` represents an immutable duration of time which can be
* used in date/time arithmetic.
*
* See https://tc39.es/proposal-temporal/docs/duration.html for more details.
*
* @category Temporal
* @tags unstable
*/
export class Duration {
static from(
item: Temporal.Duration | DurationLike | string,
): Temporal.Duration;
static compare(
one: Temporal.Duration | DurationLike | string,
two: Temporal.Duration | DurationLike | string,
options?: DurationArithmeticOptions,
): ComparisonResult;
constructor(
years?: number,
months?: number,
weeks?: number,
days?: number,
hours?: number,
minutes?: number,
seconds?: number,
milliseconds?: number,
microseconds?: number,
nanoseconds?: number,
);
readonly sign: -1 | 0 | 1;
readonly blank: boolean;
readonly years: number;
readonly months: number;
readonly weeks: number;
readonly days: number;
readonly hours: number;
readonly minutes: number;
readonly seconds: number;
readonly milliseconds: number;
readonly microseconds: number;
readonly nanoseconds: number;
negated(): Temporal.Duration;
abs(): Temporal.Duration;
with(durationLike: DurationLike): Temporal.Duration;
add(
other: Temporal.Duration | DurationLike | string,
options?: DurationArithmeticOptions,
): Temporal.Duration;
subtract(
other: Temporal.Duration | DurationLike | string,
options?: DurationArithmeticOptions,
): Temporal.Duration;
round(roundTo: DurationRoundTo): Temporal.Duration;
total(totalOf: DurationTotalOf): number;
toLocaleString(
locales?: string | string[],
options?: Intl.DateTimeFormatOptions,
): string;
toJSON(): string;
toString(options?: ToStringPrecisionOptions): string;
valueOf(): never;
readonly [Symbol.toStringTag]: "Temporal.Duration";
}
/**
* A `Temporal.Instant` is an exact point in time, with a precision in
* nanoseconds. No time zone or calendar information is present. Therefore,
* `Temporal.Instant` has no concept of days, months, or even hours.
*
* For convenience of interoperability, it internally uses nanoseconds since
* the {@link https://en.wikipedia.org/wiki/Unix_time|Unix epoch} (midnight
* UTC on January 1, 1970). However, a `Temporal.Instant` can be created from
* any of several expressions that refer to a single point in time, including
* an {@link https://en.wikipedia.org/wiki/ISO_8601|ISO 8601 string} with a
* time zone offset such as '2020-01-23T17:04:36.491865121-08:00'.
*
* See https://tc39.es/proposal-temporal/docs/instant.html for more details.
*
* @category Temporal
* @tags unstable
*/
export class Instant {
static fromEpochSeconds(epochSeconds: number): Temporal.Instant;
static fromEpochMilliseconds(epochMilliseconds: number): Temporal.Instant;
static fromEpochMicroseconds(epochMicroseconds: bigint): Temporal.Instant;
static fromEpochNanoseconds(epochNanoseconds: bigint): Temporal.Instant;
static from(item: Temporal.Instant | string): Temporal.Instant;
static compare(
one: Temporal.Instant | string,
two: Temporal.Instant | string,
): ComparisonResult;
constructor(epochNanoseconds: bigint);
readonly epochSeconds: number;
readonly epochMilliseconds: number;
readonly epochMicroseconds: bigint;
readonly epochNanoseconds: bigint;
equals(other: Temporal.Instant | string): boolean;
add(
durationLike:
| Omit<
Temporal.Duration | DurationLike,
"years" | "months" | "weeks" | "days"
>
| string,
): Temporal.Instant;
subtract(
durationLike:
| Omit<
Temporal.Duration | DurationLike,
"years" | "months" | "weeks" | "days"
>
| string,
): Temporal.Instant;
until(
other: Temporal.Instant | string,
options?: DifferenceOptions<
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.Duration;
since(
other: Temporal.Instant | string,
options?: DifferenceOptions<
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.Duration;
round(
roundTo: RoundTo<
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.Instant;
toZonedDateTime(
calendarAndTimeZone: { timeZone: TimeZoneLike; calendar: CalendarLike },
): Temporal.ZonedDateTime;
toZonedDateTimeISO(tzLike: TimeZoneLike): Temporal.ZonedDateTime;
toLocaleString(
locales?: string | string[],
options?: Intl.DateTimeFormatOptions,
): string;
toJSON(): string;
toString(options?: InstantToStringOptions): string;
valueOf(): never;
readonly [Symbol.toStringTag]: "Temporal.Instant";
}
/**
* @category Temporal
* @tags unstable
*/
export type YearOrEraAndEraYear = { era: string; eraYear: number } | {
year: number;
};
/**
* @category Temporal
* @tags unstable
*/
export type MonthCodeOrMonthAndYear =
| (YearOrEraAndEraYear & { month: number })
| {
monthCode: string;
};
/**
* @category Temporal
* @tags unstable
*/
export type MonthOrMonthCode = { month: number } | { monthCode: string };
/**
* @category Temporal
* @tags unstable
*/
export interface CalendarProtocol {
id: string;
year(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| PlainDateLike
| string,
): number;
month(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| Temporal.PlainMonthDay
| PlainDateLike
| string,
): number;
monthCode(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| Temporal.PlainMonthDay
| PlainDateLike
| string,
): string;
day(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainMonthDay
| PlainDateLike
| string,
): number;
era(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): string | undefined;
eraYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number | undefined;
dayOfWeek(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number;
dayOfYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number;
weekOfYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number;
yearOfWeek(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number;
daysInWeek(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number;
daysInMonth(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| PlainDateLike
| string,
): number;
daysInYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| PlainDateLike
| string,
): number;
monthsInYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| PlainDateLike
| string,
): number;
inLeapYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| PlainDateLike
| string,
): boolean;
dateFromFields(
fields: YearOrEraAndEraYear & MonthOrMonthCode & { day: number },
options?: AssignmentOptions,
): Temporal.PlainDate;
yearMonthFromFields(
fields: YearOrEraAndEraYear & MonthOrMonthCode,
options?: AssignmentOptions,
): Temporal.PlainYearMonth;
monthDayFromFields(
fields: MonthCodeOrMonthAndYear & { day: number },
options?: AssignmentOptions,
): Temporal.PlainMonthDay;
dateAdd(
date: Temporal.PlainDate | PlainDateLike | string,
duration: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.PlainDate;
dateUntil(
one: Temporal.PlainDate | PlainDateLike | string,
two: Temporal.PlainDate | PlainDateLike | string,
options?: DifferenceOptions<"year" | "month" | "week" | "day">,
): Temporal.Duration;
fields(fields: Iterable<string>): Iterable<string>;
mergeFields(
fields: Record<string, unknown>,
additionalFields: Record<string, unknown>,
): Record<string, unknown>;
toString?(): string;
toJSON?(): string;
}
/**
* Any of these types can be passed to Temporal methods instead of a Temporal.Calendar.
*
* @category Temporal
* @tags unstable
*/
export type CalendarLike =
| string
| CalendarProtocol
| ZonedDateTime
| PlainDateTime
| PlainDate
| PlainYearMonth
| PlainMonthDay;
/**
* A `Temporal.Calendar` is a representation of a calendar system. It includes
* information about how many days are in each year, how many months are in
* each year, how many days are in each month, and how to do arithmetic in
* that calendar system.
*
* See https://tc39.es/proposal-temporal/docs/calendar.html for more details.
*
* @category Temporal
* @tags unstable
*/
export class Calendar implements CalendarProtocol {
static from(item: CalendarLike): Temporal.Calendar | CalendarProtocol;
constructor(calendarIdentifier: string);
readonly id: string;
year(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| PlainDateLike
| string,
): number;
month(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| Temporal.PlainMonthDay
| PlainDateLike
| string,
): number;
monthCode(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| Temporal.PlainMonthDay
| PlainDateLike
| string,
): string;
day(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainMonthDay
| PlainDateLike
| string,
): number;
era(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): string | undefined;
eraYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number | undefined;
dayOfWeek(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number;
dayOfYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number;
weekOfYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number;
yearOfWeek(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number;
daysInWeek(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| PlainDateLike
| string,
): number;
daysInMonth(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| PlainDateLike
| string,
): number;
daysInYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| PlainDateLike
| string,
): number;
monthsInYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| PlainDateLike
| string,
): number;
inLeapYear(
date:
| Temporal.PlainDate
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| PlainDateLike
| string,
): boolean;
dateFromFields(
fields: YearOrEraAndEraYear & MonthOrMonthCode & { day: number },
options?: AssignmentOptions,
): Temporal.PlainDate;
yearMonthFromFields(
fields: YearOrEraAndEraYear & MonthOrMonthCode,
options?: AssignmentOptions,
): Temporal.PlainYearMonth;
monthDayFromFields(
fields: MonthCodeOrMonthAndYear & { day: number },
options?: AssignmentOptions,
): Temporal.PlainMonthDay;
dateAdd(
date: Temporal.PlainDate | PlainDateLike | string,
duration: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.PlainDate;
dateUntil(
one: Temporal.PlainDate | PlainDateLike | string,
two: Temporal.PlainDate | PlainDateLike | string,
options?: DifferenceOptions<"year" | "month" | "week" | "day">,
): Temporal.Duration;
fields(fields: Iterable<string>): string[];
mergeFields(
fields: Record<string, unknown>,
additionalFields: Record<string, unknown>,
): Record<string, unknown>;
toString(): string;
toJSON(): string;
readonly [Symbol.toStringTag]: "Temporal.Calendar";
}
/**
* @category Temporal
* @tags unstable
*/
export type PlainDateLike = {
era?: string | undefined;
eraYear?: number | undefined;
year?: number;
month?: number;
monthCode?: string;
day?: number;
calendar?: CalendarLike;
};
/**
* @category Temporal
* @tags unstable
*/
export type PlainDateISOFields = {
isoYear: number;
isoMonth: number;
isoDay: number;
calendar: string | CalendarProtocol;
};
/**
* A `Temporal.PlainDate` represents a calendar date. "Calendar date" refers to the
* concept of a date as expressed in everyday usage, independent of any time
* zone. For example, it could be used to represent an event on a calendar
* which happens during the whole day no matter which time zone it's happening
* in.
*
* See https://tc39.es/proposal-temporal/docs/date.html for more details.
*
* @category Temporal
* @tags unstable
*/
export class PlainDate {
static from(
item: Temporal.PlainDate | PlainDateLike | string,
options?: AssignmentOptions,
): Temporal.PlainDate;
static compare(
one: Temporal.PlainDate | PlainDateLike | string,
two: Temporal.PlainDate | PlainDateLike | string,
): ComparisonResult;
constructor(
isoYear: number,
isoMonth: number,
isoDay: number,
calendar?: CalendarLike,
);
readonly era: string | undefined;
readonly eraYear: number | undefined;
readonly year: number;
readonly month: number;
readonly monthCode: string;
readonly day: number;
readonly calendarId: string;
getCalendar(): CalendarProtocol;
readonly dayOfWeek: number;
readonly dayOfYear: number;
readonly weekOfYear: number;
readonly yearOfWeek: number;
readonly daysInWeek: number;
readonly daysInYear: number;
readonly daysInMonth: number;
readonly monthsInYear: number;
readonly inLeapYear: boolean;
equals(other: Temporal.PlainDate | PlainDateLike | string): boolean;
with(
dateLike: PlainDateLike,
options?: AssignmentOptions,
): Temporal.PlainDate;
withCalendar(calendar: CalendarLike): Temporal.PlainDate;
add(
durationLike: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.PlainDate;
subtract(
durationLike: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.PlainDate;
until(
other: Temporal.PlainDate | PlainDateLike | string,
options?: DifferenceOptions<"year" | "month" | "week" | "day">,
): Temporal.Duration;
since(
other: Temporal.PlainDate | PlainDateLike | string,
options?: DifferenceOptions<"year" | "month" | "week" | "day">,
): Temporal.Duration;
toPlainDateTime(
temporalTime?: Temporal.PlainTime | PlainTimeLike | string,
): Temporal.PlainDateTime;
toZonedDateTime(
timeZoneAndTime:
| TimeZoneProtocol
| string
| {
timeZone: TimeZoneLike;
plainTime?: Temporal.PlainTime | PlainTimeLike | string;
},
): Temporal.ZonedDateTime;
toPlainYearMonth(): Temporal.PlainYearMonth;
toPlainMonthDay(): Temporal.PlainMonthDay;
getISOFields(): PlainDateISOFields;
toLocaleString(
locales?: string | string[],
options?: Intl.DateTimeFormatOptions,
): string;
toJSON(): string;
toString(options?: ShowCalendarOption): string;
valueOf(): never;
readonly [Symbol.toStringTag]: "Temporal.PlainDate";
}
/**
* @category Temporal
* @tags unstable
*/
export type PlainDateTimeLike = {
era?: string | undefined;
eraYear?: number | undefined;
year?: number;
month?: number;
monthCode?: string;
day?: number;
hour?: number;
minute?: number;
second?: number;
millisecond?: number;
microsecond?: number;
nanosecond?: number;
calendar?: CalendarLike;
};
/**
* @category Temporal
* @tags unstable
*/
export type PlainDateTimeISOFields = {
isoYear: number;
isoMonth: number;
isoDay: number;
isoHour: number;
isoMinute: number;
isoSecond: number;
isoMillisecond: number;
isoMicrosecond: number;
isoNanosecond: number;
calendar: string | CalendarProtocol;
};
/**
* A `Temporal.PlainDateTime` represents a calendar date and wall-clock time, with
* a precision in nanoseconds, and without any time zone. Of the Temporal
* classes carrying human-readable time information, it is the most general
* and complete one. `Temporal.PlainDate`, `Temporal.PlainTime`, `Temporal.PlainYearMonth`,
* and `Temporal.PlainMonthDay` all carry less information and should be used when
* complete information is not required.
*
* See https://tc39.es/proposal-temporal/docs/datetime.html for more details.
*
* @category Temporal
* @tags unstable
*/
export class PlainDateTime {
static from(
item: Temporal.PlainDateTime | PlainDateTimeLike | string,
options?: AssignmentOptions,
): Temporal.PlainDateTime;
static compare(
one: Temporal.PlainDateTime | PlainDateTimeLike | string,
two: Temporal.PlainDateTime | PlainDateTimeLike | string,
): ComparisonResult;
constructor(
isoYear: number,
isoMonth: number,
isoDay: number,
hour?: number,
minute?: number,
second?: number,
millisecond?: number,
microsecond?: number,
nanosecond?: number,
calendar?: CalendarLike,
);
readonly era: string | undefined;
readonly eraYear: number | undefined;
readonly year: number;
readonly month: number;
readonly monthCode: string;
readonly day: number;
readonly hour: number;
readonly minute: number;
readonly second: number;
readonly millisecond: number;
readonly microsecond: number;
readonly nanosecond: number;
readonly calendarId: string;
getCalendar(): CalendarProtocol;
readonly dayOfWeek: number;
readonly dayOfYear: number;
readonly weekOfYear: number;
readonly yearOfWeek: number;
readonly daysInWeek: number;
readonly daysInYear: number;
readonly daysInMonth: number;
readonly monthsInYear: number;
readonly inLeapYear: boolean;
equals(other: Temporal.PlainDateTime | PlainDateTimeLike | string): boolean;
with(
dateTimeLike: PlainDateTimeLike,
options?: AssignmentOptions,
): Temporal.PlainDateTime;
withPlainTime(
timeLike?: Temporal.PlainTime | PlainTimeLike | string,
): Temporal.PlainDateTime;
withPlainDate(
dateLike: Temporal.PlainDate | PlainDateLike | string,
): Temporal.PlainDateTime;
withCalendar(calendar: CalendarLike): Temporal.PlainDateTime;
add(
durationLike: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.PlainDateTime;
subtract(
durationLike: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.PlainDateTime;
until(
other: Temporal.PlainDateTime | PlainDateTimeLike | string,
options?: DifferenceOptions<
| "year"
| "month"
| "week"
| "day"
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.Duration;
since(
other: Temporal.PlainDateTime | PlainDateTimeLike | string,
options?: DifferenceOptions<
| "year"
| "month"
| "week"
| "day"
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.Duration;
round(
roundTo: RoundTo<
| "day"
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.PlainDateTime;
toZonedDateTime(
tzLike: TimeZoneLike,
options?: ToInstantOptions,
): Temporal.ZonedDateTime;
toPlainDate(): Temporal.PlainDate;
toPlainYearMonth(): Temporal.PlainYearMonth;
toPlainMonthDay(): Temporal.PlainMonthDay;
toPlainTime(): Temporal.PlainTime;
getISOFields(): PlainDateTimeISOFields;
toLocaleString(
locales?: string | string[],
options?: Intl.DateTimeFormatOptions,
): string;
toJSON(): string;
toString(options?: CalendarTypeToStringOptions): string;
valueOf(): never;
readonly [Symbol.toStringTag]: "Temporal.PlainDateTime";
}
/**
* @category Temporal
* @tags unstable
*/
export type PlainMonthDayLike = {
era?: string | undefined;
eraYear?: number | undefined;
year?: number;
month?: number;
monthCode?: string;
day?: number;
calendar?: CalendarLike;
};
/**
* A `Temporal.PlainMonthDay` represents a particular day on the calendar, but
* without a year. For example, it could be used to represent a yearly
* recurring event, like "Bastille Day is on the 14th of July."
*
* See https://tc39.es/proposal-temporal/docs/monthday.html for more details.
*
* @category Temporal
* @tags unstable
*/
export class PlainMonthDay {
static from(
item: Temporal.PlainMonthDay | PlainMonthDayLike | string,
options?: AssignmentOptions,
): Temporal.PlainMonthDay;
constructor(
isoMonth: number,
isoDay: number,
calendar?: CalendarLike,
referenceISOYear?: number,
);
readonly monthCode: string;
readonly day: number;
readonly calendarId: string;
getCalendar(): CalendarProtocol;
equals(other: Temporal.PlainMonthDay | PlainMonthDayLike | string): boolean;
with(
monthDayLike: PlainMonthDayLike,
options?: AssignmentOptions,
): Temporal.PlainMonthDay;
toPlainDate(year: { year: number }): Temporal.PlainDate;
getISOFields(): PlainDateISOFields;
toLocaleString(
locales?: string | string[],
options?: Intl.DateTimeFormatOptions,
): string;
toJSON(): string;
toString(options?: ShowCalendarOption): string;
valueOf(): never;
readonly [Symbol.toStringTag]: "Temporal.PlainMonthDay";
}
/**
* @category Temporal
* @tags unstable
*/
export type PlainTimeLike = {
hour?: number;
minute?: number;
second?: number;
millisecond?: number;
microsecond?: number;
nanosecond?: number;
};
/**
* @category Temporal
* @tags unstable
*/
export type PlainTimeISOFields = {
isoHour: number;
isoMinute: number;
isoSecond: number;
isoMillisecond: number;
isoMicrosecond: number;
isoNanosecond: number;
};
/**
* A `Temporal.PlainTime` represents a wall-clock time, with a precision in
* nanoseconds, and without any time zone. "Wall-clock time" refers to the
* concept of a time as expressed in everyday usage — the time that you read
* off the clock on the wall. For example, it could be used to represent an
* event that happens daily at a certain time, no matter what time zone.
*
* `Temporal.PlainTime` refers to a time with no associated calendar date; if you
* need to refer to a specific time on a specific day, use
* `Temporal.PlainDateTime`. A `Temporal.PlainTime` can be converted into a
* `Temporal.PlainDateTime` by combining it with a `Temporal.PlainDate` using the
* `toPlainDateTime()` method.
*
* See https://tc39.es/proposal-temporal/docs/time.html for more details.
*
* @category Temporal
* @tags unstable
*/
export class PlainTime {
static from(
item: Temporal.PlainTime | PlainTimeLike | string,
options?: AssignmentOptions,
): Temporal.PlainTime;
static compare(
one: Temporal.PlainTime | PlainTimeLike | string,
two: Temporal.PlainTime | PlainTimeLike | string,
): ComparisonResult;
constructor(
hour?: number,
minute?: number,
second?: number,
millisecond?: number,
microsecond?: number,
nanosecond?: number,
);
readonly hour: number;
readonly minute: number;
readonly second: number;
readonly millisecond: number;
readonly microsecond: number;
readonly nanosecond: number;
equals(other: Temporal.PlainTime | PlainTimeLike | string): boolean;
with(
timeLike: Temporal.PlainTime | PlainTimeLike,
options?: AssignmentOptions,
): Temporal.PlainTime;
add(
durationLike: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.PlainTime;
subtract(
durationLike: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.PlainTime;
until(
other: Temporal.PlainTime | PlainTimeLike | string,
options?: DifferenceOptions<
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.Duration;
since(
other: Temporal.PlainTime | PlainTimeLike | string,
options?: DifferenceOptions<
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.Duration;
round(
roundTo: RoundTo<
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.PlainTime;
toPlainDateTime(
temporalDate: Temporal.PlainDate | PlainDateLike | string,
): Temporal.PlainDateTime;
toZonedDateTime(timeZoneAndDate: {
timeZone: TimeZoneLike;
plainDate: Temporal.PlainDate | PlainDateLike | string;
}): Temporal.ZonedDateTime;
getISOFields(): PlainTimeISOFields;
toLocaleString(
locales?: string | string[],
options?: Intl.DateTimeFormatOptions,
): string;
toJSON(): string;
toString(options?: ToStringPrecisionOptions): string;
valueOf(): never;
readonly [Symbol.toStringTag]: "Temporal.PlainTime";
}
/**
* A plain object implementing the protocol for a custom time zone.
*
* @category Temporal
* @tags unstable
*/
export interface TimeZoneProtocol {
id: string;
getOffsetNanosecondsFor(instant: Temporal.Instant | string): number;
getOffsetStringFor?(instant: Temporal.Instant | string): string;
getPlainDateTimeFor?(
instant: Temporal.Instant | string,
calendar?: CalendarLike,
): Temporal.PlainDateTime;
getInstantFor?(
dateTime: Temporal.PlainDateTime | PlainDateTimeLike | string,
options?: ToInstantOptions,
): Temporal.Instant;
getNextTransition?(
startingPoint: Temporal.Instant | string,
): Temporal.Instant | null;
getPreviousTransition?(
startingPoint: Temporal.Instant | string,
): Temporal.Instant | null;
getPossibleInstantsFor(
dateTime: Temporal.PlainDateTime | PlainDateTimeLike | string,
): Temporal.Instant[];
toString?(): string;
toJSON?(): string;
}
/**
* Any of these types can be passed to Temporal methods instead of a Temporal.TimeZone.
*
* @category Temporal
* @tags unstable
*/
export type TimeZoneLike = string | TimeZoneProtocol | ZonedDateTime;
/**
* A `Temporal.TimeZone` is a representation of a time zone: either an
* {@link https://www.iana.org/time-zones|IANA time zone}, including
* information about the time zone such as the offset between the local time
* and UTC at a particular time, and daylight saving time (DST) changes; or
* simply a particular UTC offset with no DST.
*
* `Temporal.ZonedDateTime` is the only Temporal type to contain a time zone.
* Other types, like `Temporal.Instant` and `Temporal.PlainDateTime`, do not
* contain any time zone information, and a `Temporal.TimeZone` object is
* required to convert between them.
*
* See https://tc39.es/proposal-temporal/docs/timezone.html for more details.
*
* @category Temporal
* @tags unstable
*/
export class TimeZone implements TimeZoneProtocol {
static from(timeZone: TimeZoneLike): Temporal.TimeZone | TimeZoneProtocol;
constructor(timeZoneIdentifier: string);
readonly id: string;
equals(timeZone: TimeZoneLike): boolean;
getOffsetNanosecondsFor(instant: Temporal.Instant | string): number;
getOffsetStringFor(instant: Temporal.Instant | string): string;
getPlainDateTimeFor(
instant: Temporal.Instant | string,
calendar?: CalendarLike,
): Temporal.PlainDateTime;
getInstantFor(
dateTime: Temporal.PlainDateTime | PlainDateTimeLike | string,
options?: ToInstantOptions,
): Temporal.Instant;
getNextTransition(
startingPoint: Temporal.Instant | string,
): Temporal.Instant | null;
getPreviousTransition(
startingPoint: Temporal.Instant | string,
): Temporal.Instant | null;
getPossibleInstantsFor(
dateTime: Temporal.PlainDateTime | PlainDateTimeLike | string,
): Temporal.Instant[];
toString(): string;
toJSON(): string;
readonly [Symbol.toStringTag]: "Temporal.TimeZone";
}
/**
* @category Temporal
* @tags unstable
*/
export type PlainYearMonthLike = {
era?: string | undefined;
eraYear?: number | undefined;
year?: number;
month?: number;
monthCode?: string;
calendar?: CalendarLike;
};
/**
* A `Temporal.PlainYearMonth` represents a particular month on the calendar. For
* example, it could be used to represent a particular instance of a monthly
* recurring event, like "the June 2019 meeting".
*
* See https://tc39.es/proposal-temporal/docs/yearmonth.html for more details.
*
* @category Temporal
* @tags unstable
*/
export class PlainYearMonth {
static from(
item: Temporal.PlainYearMonth | PlainYearMonthLike | string,
options?: AssignmentOptions,
): Temporal.PlainYearMonth;
static compare(
one: Temporal.PlainYearMonth | PlainYearMonthLike | string,
two: Temporal.PlainYearMonth | PlainYearMonthLike | string,
): ComparisonResult;
constructor(
isoYear: number,
isoMonth: number,
calendar?: CalendarLike,
referenceISODay?: number,
);
readonly era: string | undefined;
readonly eraYear: number | undefined;
readonly year: number;
readonly month: number;
readonly monthCode: string;
readonly calendarId: string;
getCalendar(): CalendarProtocol;
readonly daysInMonth: number;
readonly daysInYear: number;
readonly monthsInYear: number;
readonly inLeapYear: boolean;
equals(
other: Temporal.PlainYearMonth | PlainYearMonthLike | string,
): boolean;
with(
yearMonthLike: PlainYearMonthLike,
options?: AssignmentOptions,
): Temporal.PlainYearMonth;
add(
durationLike: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.PlainYearMonth;
subtract(
durationLike: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.PlainYearMonth;
until(
other: Temporal.PlainYearMonth | PlainYearMonthLike | string,
options?: DifferenceOptions<"year" | "month">,
): Temporal.Duration;
since(
other: Temporal.PlainYearMonth | PlainYearMonthLike | string,
options?: DifferenceOptions<"year" | "month">,
): Temporal.Duration;
toPlainDate(day: { day: number }): Temporal.PlainDate;
getISOFields(): PlainDateISOFields;
toLocaleString(
locales?: string | string[],
options?: Intl.DateTimeFormatOptions,
): string;
toJSON(): string;
toString(options?: ShowCalendarOption): string;
valueOf(): never;
readonly [Symbol.toStringTag]: "Temporal.PlainYearMonth";
}
/**
* @category Temporal
* @tags unstable
*/
export type ZonedDateTimeLike = {
era?: string | undefined;
eraYear?: number | undefined;
year?: number;
month?: number;
monthCode?: string;
day?: number;
hour?: number;
minute?: number;
second?: number;
millisecond?: number;
microsecond?: number;
nanosecond?: number;
offset?: string;
timeZone?: TimeZoneLike;
calendar?: CalendarLike;
};
/**
* @category Temporal
* @tags unstable
*/
export type ZonedDateTimeISOFields = {
isoYear: number;
isoMonth: number;
isoDay: number;
isoHour: number;
isoMinute: number;
isoSecond: number;
isoMillisecond: number;
isoMicrosecond: number;
isoNanosecond: number;
offset: string;
timeZone: string | TimeZoneProtocol;
calendar: string | CalendarProtocol;
};
/**
* @category Temporal
* @tags unstable
*/
export class ZonedDateTime {
static from(
item: Temporal.ZonedDateTime | ZonedDateTimeLike | string,
options?: ZonedDateTimeAssignmentOptions,
): ZonedDateTime;
static compare(
one: Temporal.ZonedDateTime | ZonedDateTimeLike | string,
two: Temporal.ZonedDateTime | ZonedDateTimeLike | string,
): ComparisonResult;
constructor(
epochNanoseconds: bigint,
timeZone: TimeZoneLike,
calendar?: CalendarLike,
);
readonly era: string | undefined;
readonly eraYear: number | undefined;
readonly year: number;
readonly month: number;
readonly monthCode: string;
readonly day: number;
readonly hour: number;
readonly minute: number;
readonly second: number;
readonly millisecond: number;
readonly microsecond: number;
readonly nanosecond: number;
readonly timeZoneId: string;
getTimeZone(): TimeZoneProtocol;
readonly calendarId: string;
getCalendar(): CalendarProtocol;
readonly dayOfWeek: number;
readonly dayOfYear: number;
readonly weekOfYear: number;
readonly yearOfWeek: number;
readonly hoursInDay: number;
readonly daysInWeek: number;
readonly daysInMonth: number;
readonly daysInYear: number;
readonly monthsInYear: number;
readonly inLeapYear: boolean;
readonly offsetNanoseconds: number;
readonly offset: string;
readonly epochSeconds: number;
readonly epochMilliseconds: number;
readonly epochMicroseconds: bigint;
readonly epochNanoseconds: bigint;
equals(other: Temporal.ZonedDateTime | ZonedDateTimeLike | string): boolean;
with(
zonedDateTimeLike: ZonedDateTimeLike,
options?: ZonedDateTimeAssignmentOptions,
): Temporal.ZonedDateTime;
withPlainTime(
timeLike?: Temporal.PlainTime | PlainTimeLike | string,
): Temporal.ZonedDateTime;
withPlainDate(
dateLike: Temporal.PlainDate | PlainDateLike | string,
): Temporal.ZonedDateTime;
withCalendar(calendar: CalendarLike): Temporal.ZonedDateTime;
withTimeZone(timeZone: TimeZoneLike): Temporal.ZonedDateTime;
add(
durationLike: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.ZonedDateTime;
subtract(
durationLike: Temporal.Duration | DurationLike | string,
options?: ArithmeticOptions,
): Temporal.ZonedDateTime;
until(
other: Temporal.ZonedDateTime | ZonedDateTimeLike | string,
options?: Temporal.DifferenceOptions<
| "year"
| "month"
| "week"
| "day"
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.Duration;
since(
other: Temporal.ZonedDateTime | ZonedDateTimeLike | string,
options?: Temporal.DifferenceOptions<
| "year"
| "month"
| "week"
| "day"
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.Duration;
round(
roundTo: RoundTo<
| "day"
| "hour"
| "minute"
| "second"
| "millisecond"
| "microsecond"
| "nanosecond"
>,
): Temporal.ZonedDateTime;
startOfDay(): Temporal.ZonedDateTime;
toInstant(): Temporal.Instant;
toPlainDateTime(): Temporal.PlainDateTime;
toPlainDate(): Temporal.PlainDate;
toPlainYearMonth(): Temporal.PlainYearMonth;
toPlainMonthDay(): Temporal.PlainMonthDay;
toPlainTime(): Temporal.PlainTime;
getISOFields(): ZonedDateTimeISOFields;
toLocaleString(
locales?: string | string[],
options?: Intl.DateTimeFormatOptions,
): string;
toJSON(): string;
toString(options?: ZonedDateTimeToStringOptions): string;
valueOf(): never;
readonly [Symbol.toStringTag]: "Temporal.ZonedDateTime";
}
/**
* The `Temporal.Now` object has several methods which give information about
* the current date, time, and time zone.
*
* See https://tc39.es/proposal-temporal/docs/now.html for more details.
*
* @category Temporal
* @tags unstable
*/
export const Now: {
/**
* Get the exact system date and time as a `Temporal.Instant`.
*
* This method gets the current exact system time, without regard to
* calendar or time zone. This is a good way to get a timestamp for an
* event, for example. It works like the old-style JavaScript `Date.now()`,
* but with nanosecond precision instead of milliseconds.
*
* Note that a `Temporal.Instant` doesn't know about time zones. For the
* exact time in a specific time zone, use `Temporal.Now.zonedDateTimeISO`
* or `Temporal.Now.zonedDateTime`.
*/
instant: () => Temporal.Instant;
/**
* Get the current calendar date and clock time in a specific calendar and
* time zone.
*
* The `calendar` parameter is required. When using the ISO 8601 calendar or
* if you don't understand the need for or implications of a calendar, then
* a more ergonomic alternative to this method is
* `Temporal.Now.zonedDateTimeISO()`.
*
* @param {CalendarLike} [calendar] - calendar identifier, or
* a `Temporal.Calendar` instance, or an object implementing the calendar
* protocol.
* @param {TimeZoneLike} [tzLike] -
* {@link https://en.wikipedia.org/wiki/List_of_tz_database_time_zones|IANA time zone identifier}
* string (e.g. `'Europe/London'`), `Temporal.TimeZone` instance, or an
* object implementing the time zone protocol. If omitted, the environment's
* current time zone will be used.
*/
zonedDateTime: (
calendar: CalendarLike,
tzLike?: TimeZoneLike,
) => Temporal.ZonedDateTime;
/**
* Get the current calendar date and clock time in a specific time zone,
* using the ISO 8601 calendar.
*
* @param {TimeZoneLike} [tzLike] -
* {@link https://en.wikipedia.org/wiki/List_of_tz_database_time_zones|IANA time zone identifier}
* string (e.g. `'Europe/London'`), `Temporal.TimeZone` instance, or an
* object implementing the time zone protocol. If omitted, the environment's
* current time zone will be used.
*/
zonedDateTimeISO: (tzLike?: TimeZoneLike) => Temporal.ZonedDateTime;
/**
* Get the current calendar date and clock time in a specific calendar and
* time zone.
*
* The calendar is required. When using the ISO 8601 calendar or if you
* don't understand the need for or implications of a calendar, then a more
* ergonomic alternative to this method is `Temporal.Now.plainDateTimeISO`.
*
* Note that the `Temporal.PlainDateTime` type does not persist the time zone,
* but retaining the time zone is required for most time-zone-related use
* cases. Therefore, it's usually recommended to use
* `Temporal.Now.zonedDateTimeISO` or `Temporal.Now.zonedDateTime` instead
* of this function.
*
* @param {CalendarLike} [calendar] - calendar identifier, or
* a `Temporal.Calendar` instance, or an object implementing the calendar
* protocol.
* @param {TimeZoneLike} [tzLike] -
* {@link https://en.wikipedia.org/wiki/List_of_tz_database_time_zones|IANA time zone identifier}
* string (e.g. `'Europe/London'`), `Temporal.TimeZone` instance, or an
* object implementing the time zone protocol. If omitted,
* the environment's current time zone will be used.
*/
plainDateTime: (
calendar: CalendarLike,
tzLike?: TimeZoneLike,
) => Temporal.PlainDateTime;
/**
* Get the current date and clock time in a specific time zone, using the
* ISO 8601 calendar.
*
* Note that the `Temporal.PlainDateTime` type does not persist the time zone,
* but retaining the time zone is required for most time-zone-related use
* cases. Therefore, it's usually recommended to use
* `Temporal.Now.zonedDateTimeISO` instead of this function.
*
* @param {TimeZoneLike} [tzLike] -
* {@link https://en.wikipedia.org/wiki/List_of_tz_database_time_zones|IANA time zone identifier}
* string (e.g. `'Europe/London'`), `Temporal.TimeZone` instance, or an
* object implementing the time zone protocol. If omitted, the environment's
* current time zone will be used.
*/
plainDateTimeISO: (tzLike?: TimeZoneLike) => Temporal.PlainDateTime;
/**
* Get the current calendar date in a specific calendar and time zone.
*
* The calendar is required. When using the ISO 8601 calendar or if you
* don't understand the need for or implications of a calendar, then a more
* ergonomic alternative to this method is `Temporal.Now.plainDateISO`.
*
* @param {CalendarLike} [calendar] - calendar identifier, or
* a `Temporal.Calendar` instance, or an object implementing the calendar
* protocol.
* @param {TimeZoneLike} [tzLike] -
* {@link https://en.wikipedia.org/wiki/List_of_tz_database_time_zones|IANA time zone identifier}
* string (e.g. `'Europe/London'`), `Temporal.TimeZone` instance, or an
* object implementing the time zone protocol. If omitted,
* the environment's current time zone will be used.
*/
plainDate: (
calendar: CalendarLike,
tzLike?: TimeZoneLike,
) => Temporal.PlainDate;
/**
* Get the current date in a specific time zone, using the ISO 8601
* calendar.
*
* @param {TimeZoneLike} [tzLike] -
* {@link https://en.wikipedia.org/wiki/List_of_tz_database_time_zones|IANA time zone identifier}
* string (e.g. `'Europe/London'`), `Temporal.TimeZone` instance, or an
* object implementing the time zone protocol. If omitted, the environment's
* current time zone will be used.
*/
plainDateISO: (tzLike?: TimeZoneLike) => Temporal.PlainDate;
/**
* Get the current clock time in a specific time zone, using the ISO 8601 calendar.
*
* @param {TimeZoneLike} [tzLike] -
* {@link https://en.wikipedia.org/wiki/List_of_tz_database_time_zones|IANA time zone identifier}
* string (e.g. `'Europe/London'`), `Temporal.TimeZone` instance, or an
* object implementing the time zone protocol. If omitted, the environment's
* current time zone will be used.
*/
plainTimeISO: (tzLike?: TimeZoneLike) => Temporal.PlainTime;
/**
* Get the identifier of the environment's current time zone.
*
* This method gets the identifier of the current system time zone. This
* will usually be a named
* {@link https://en.wikipedia.org/wiki/List_of_tz_database_time_zones|IANA time zone}.
*/
timeZoneId: () => string;
readonly [Symbol.toStringTag]: "Temporal.Now";
};
}
/**
* @category Temporal
* @tags unstable
*/
declare interface Date {
toTemporalInstant(): Temporal.Instant;
}
/**
* @category Intl
* @tags unstable
*/
declare namespace Intl {
/**
* @category Intl
* @tags unstable
*/
export type Formattable =
| Date
| Temporal.Instant
| Temporal.ZonedDateTime
| Temporal.PlainDate
| Temporal.PlainTime
| Temporal.PlainDateTime
| Temporal.PlainYearMonth
| Temporal.PlainMonthDay;
/**
* @category Intl
* @tags unstable
*/
export interface DateTimeFormatRangePart {
source: "shared" | "startRange" | "endRange";
}
/**
* @category Intl
* @tags unstable
*/
export interface DateTimeFormat {
/**
* Format a date into a string according to the locale and formatting
* options of this `Intl.DateTimeFormat` object.
*
* @param date The date to format.
*/
format(date?: Formattable | number): string;
/**
* Allow locale-aware formatting of strings produced by
* `Intl.DateTimeFormat` formatters.
*
* @param date The date to format.
*/
formatToParts(
date?: Formattable | number,
): globalThis.Intl.DateTimeFormatPart[];
/**
* Format a date range in the most concise way based on the locale and
* options provided when instantiating this `Intl.DateTimeFormat` object.
*
* @param startDate The start date of the range to format.
* @param endDate The start date of the range to format. Must be the same
* type as `startRange`.
*/
formatRange<T extends Formattable>(startDate: T, endDate: T): string;
formatRange(startDate: Date | number, endDate: Date | number): string;
/**
* Allow locale-aware formatting of tokens representing each part of the
* formatted date range produced by `Intl.DateTimeFormat` formatters.
*
* @param startDate The start date of the range to format.
* @param endDate The start date of the range to format. Must be the same
* type as `startRange`.
*/
formatRangeToParts<T extends Formattable>(
startDate: T,
endDate: T,
): DateTimeFormatRangePart[];
formatRangeToParts(
startDate: Date | number,
endDate: Date | number,
): DateTimeFormatRangePart[];
}
/**
* @category Intl
* @tags unstable
*/
export interface DateTimeFormatOptions {
// TODO: remove the props below after TS lib declarations are updated
dayPeriod?: "narrow" | "short" | "long";
dateStyle?: "full" | "long" | "medium" | "short";
timeStyle?: "full" | "long" | "medium" | "short";
}
}
/**
* A typed array of 16-bit float values. The contents are initialized to 0. If the requested number
* of bytes could not be allocated an exception is raised.
*
* @category Platform
* @tags unstable
*/
declare interface Float16Array {
/**
* The size in bytes of each element in the array.
*/
readonly BYTES_PER_ELEMENT: number;
/**
* The ArrayBuffer instance referenced by the array.
*/
readonly buffer: ArrayBufferLike;
/**
* The length in bytes of the array.
*/
readonly byteLength: number;
/**
* The offset in bytes of the array.
*/
readonly byteOffset: number;
/**
* Returns the this object after copying a section of the array identified by start and end
* to the same array starting at position target
* @param target If target is negative, it is treated as length+target where length is the
* length of the array.
* @param start If start is negative, it is treated as length+start. If end is negative, it
* is treated as length+end.
* @param end If not specified, length of the this object is used as its default value.
*/
copyWithin(target: number, start: number, end?: number): this;
/**
* Determines whether all the members of an array satisfy the specified test.
* @param predicate A function that accepts up to three arguments. The every method calls
* the predicate function for each element in the array until the predicate returns a value
* which is coercible to the Boolean value false, or until the end of the array.
* @param thisArg An object to which the this keyword can refer in the predicate function.
* If thisArg is omitted, undefined is used as the this value.
*/
every(
predicate: (value: number, index: number, array: Float16Array) => unknown,
thisArg?: any,
): boolean;
/**
* Changes all array elements from `start` to `end` index to a static `value` and returns the modified array
* @param value value to fill array section with
* @param start index to start filling the array at. If start is negative, it is treated as
* length+start where length is the length of the array.
* @param end index to stop filling the array at. If end is negative, it is treated as
* length+end.
*/
fill(value: number, start?: number, end?: number): this;
/**
* Returns the elements of an array that meet the condition specified in a callback function.
* @param predicate A function that accepts up to three arguments. The filter method calls
* the predicate function one time for each element in the array.
* @param thisArg An object to which the this keyword can refer in the predicate function.
* If thisArg is omitted, undefined is used as the this value.
*/
filter(
predicate: (value: number, index: number, array: Float16Array) => any,
thisArg?: any,
): Float16Array;
/**
* Returns the value of the first element in the array where predicate is true, and undefined
* otherwise.
* @param predicate find calls predicate once for each element of the array, in ascending
* order, until it finds one where predicate returns true. If such an element is found, find
* immediately returns that element value. Otherwise, find returns undefined.
* @param thisArg If provided, it will be used as the this value for each invocation of
* predicate. If it is not provided, undefined is used instead.
*/
find(
predicate: (value: number, index: number, obj: Float16Array) => boolean,
thisArg?: any,
): number | undefined;
/**
* Returns the index of the first element in the array where predicate is true, and -1
* otherwise.
* @param predicate find calls predicate once for each element of the array, in ascending
* order, until it finds one where predicate returns true. If such an element is found,
* findIndex immediately returns that element index. Otherwise, findIndex returns -1.
* @param thisArg If provided, it will be used as the this value for each invocation of
* predicate. If it is not provided, undefined is used instead.
*/
findIndex(
predicate: (value: number, index: number, obj: Float16Array) => boolean,
thisArg?: any,
): number;
/**
* Performs the specified action for each element in an array.
* @param callbackfn A function that accepts up to three arguments. forEach calls the
* callbackfn function one time for each element in the array.
* @param thisArg An object to which the this keyword can refer in the callbackfn function.
* If thisArg is omitted, undefined is used as the this value.
*/
forEach(
callbackfn: (value: number, index: number, array: Float16Array) => void,
thisArg?: any,
): void;
/**
* Returns the index of the first occurrence of a value in an array.
* @param searchElement The value to locate in the array.
* @param fromIndex The array index at which to begin the search. If fromIndex is omitted, the
* search starts at index 0.
*/
indexOf(searchElement: number, fromIndex?: number): number;
/**
* Adds all the elements of an array separated by the specified separator string.
* @param separator A string used to separate one element of an array from the next in the
* resulting String. If omitted, the array elements are separated with a comma.
*/
join(separator?: string): string;
/**
* Returns the index of the last occurrence of a value in an array.
* @param searchElement The value to locate in the array.
* @param fromIndex The array index at which to begin the search. If fromIndex is omitted, the
* search starts at index 0.
*/
lastIndexOf(searchElement: number, fromIndex?: number): number;
/**
* The length of the array.
*/
readonly length: number;
/**
* Calls a defined callback function on each element of an array, and returns an array that
* contains the results.
* @param callbackfn A function that accepts up to three arguments. The map method calls the
* callbackfn function one time for each element in the array.
* @param thisArg An object to which the this keyword can refer in the callbackfn function.
* If thisArg is omitted, undefined is used as the this value.
*/
map(
callbackfn: (value: number, index: number, array: Float16Array) => number,
thisArg?: any,
): Float16Array;
/**
* Calls the specified callback function for all the elements in an array. The return value of
* the callback function is the accumulated result, and is provided as an argument in the next
* call to the callback function.
* @param callbackfn A function that accepts up to four arguments. The reduce method calls the
* callbackfn function one time for each element in the array.
* @param initialValue If initialValue is specified, it is used as the initial value to start
* the accumulation. The first call to the callbackfn function provides this value as an argument
* instead of an array value.
*/
reduce(
callbackfn: (
previousValue: number,
currentValue: number,
currentIndex: number,
array: Float16Array,
) => number,
): number;
reduce(
callbackfn: (
previousValue: number,
currentValue: number,
currentIndex: number,
array: Float16Array,
) => number,
initialValue: number,
): number;
/**
* Calls the specified callback function for all the elements in an array. The return value of
* the callback function is the accumulated result, and is provided as an argument in the next
* call to the callback function.
* @param callbackfn A function that accepts up to four arguments. The reduce method calls the
* callbackfn function one time for each element in the array.
* @param initialValue If initialValue is specified, it is used as the initial value to start
* the accumulation. The first call to the callbackfn function provides this value as an argument
* instead of an array value.
*/
reduce<U>(
callbackfn: (
previousValue: U,
currentValue: number,
currentIndex: number,
array: Float16Array,
) => U,
initialValue: U,
): U;
/**
* Calls the specified callback function for all the elements in an array, in descending order.
* The return value of the callback function is the accumulated result, and is provided as an
* argument in the next call to the callback function.
* @param callbackfn A function that accepts up to four arguments. The reduceRight method calls
* the callbackfn function one time for each element in the array.
* @param initialValue If initialValue is specified, it is used as the initial value to start
* the accumulation. The first call to the callbackfn function provides this value as an
* argument instead of an array value.
*/
reduceRight(
callbackfn: (
previousValue: number,
currentValue: number,
currentIndex: number,
array: Float16Array,
) => number,
): number;
reduceRight(
callbackfn: (
previousValue: number,
currentValue: number,
currentIndex: number,
array: Float16Array,
) => number,
initialValue: number,
): number;
/**
* Calls the specified callback function for all the elements in an array, in descending order.
* The return value of the callback function is the accumulated result, and is provided as an
* argument in the next call to the callback function.
* @param callbackfn A function that accepts up to four arguments. The reduceRight method calls
* the callbackfn function one time for each element in the array.
* @param initialValue If initialValue is specified, it is used as the initial value to start
* the accumulation. The first call to the callbackfn function provides this value as an argument
* instead of an array value.
*/
reduceRight<U>(
callbackfn: (
previousValue: U,
currentValue: number,
currentIndex: number,
array: Float16Array,
) => U,
initialValue: U,
): U;
/**
* Reverses the elements in an Array.
*/
reverse(): Float16Array;
/**
* Sets a value or an array of values.
* @param array A typed or untyped array of values to set.
* @param offset The index in the current array at which the values are to be written.
*/
set(array: ArrayLike<number>, offset?: number): void;
/**
* Returns a section of an array.
* @param start The beginning of the specified portion of the array.
* @param end The end of the specified portion of the array. This is exclusive of the element at the index 'end'.
*/
slice(start?: number, end?: number): Float16Array;
/**
* Determines whether the specified callback function returns true for any element of an array.
* @param predicate A function that accepts up to three arguments. The some method calls
* the predicate function for each element in the array until the predicate returns a value
* which is coercible to the Boolean value true, or until the end of the array.
* @param thisArg An object to which the this keyword can refer in the predicate function.
* If thisArg is omitted, undefined is used as the this value.
*/
some(
predicate: (value: number, index: number, array: Float16Array) => unknown,
thisArg?: any,
): boolean;
/**
* Sorts an array.
* @param compareFn Function used to determine the order of the elements. It is expected to return
* a negative value if first argument is less than second argument, zero if they're equal and a positive
* value otherwise. If omitted, the elements are sorted in ascending order.
* ```ts
* [11,2,22,1].sort((a, b) => a - b)
* ```
*/
sort(compareFn?: (a: number, b: number) => number): this;
/**
* Gets a new Float16Array view of the ArrayBuffer store for this array, referencing the elements
* at begin, inclusive, up to end, exclusive.
* @param begin The index of the beginning of the array.
* @param end The index of the end of the array.
*/
subarray(begin?: number, end?: number): Float16Array;
/**
* Converts a number to a string by using the current locale.
*/
toLocaleString(): string;
/**
* Returns a string representation of an array.
*/
toString(): string;
/** Returns the primitive value of the specified object. */
valueOf(): Float16Array;
[index: number]: number;
}
/**
* @category Platform
* @tags unstable
*/
declare interface Float16ArrayConstructor {
readonly prototype: Float16Array;
new (length: number): Float16Array;
new (array: ArrayLike<number> | ArrayBufferLike): Float16Array;
new (
buffer: ArrayBufferLike,
byteOffset?: number,
length?: number,
): Float16Array;
/**
* The size in bytes of each element in the array.
*/
readonly BYTES_PER_ELEMENT: number;
/**
* Returns a new array from a set of elements.
* @param items A set of elements to include in the new array object.
*/
of(...items: number[]): Float16Array;
/**
* Creates an array from an array-like or iterable object.
* @param arrayLike An array-like or iterable object to convert to an array.
*/
from(arrayLike: ArrayLike<number>): Float16Array;
/**
* Creates an array from an array-like or iterable object.
* @param arrayLike An array-like or iterable object to convert to an array.
* @param mapfn A mapping function to call on every element of the array.
* @param thisArg Value of 'this' used to invoke the mapfn.
*/
from<T>(
arrayLike: ArrayLike<T>,
mapfn: (v: T, k: number) => number,
thisArg?: any,
): Float16Array;
}
/**
* @category Platform
* @tags unstable
*/
declare var Float16Array: Float16ArrayConstructor;
/**
* @category Platform
* @tags unstable
*/
declare interface Float16 {
[Symbol.iterator](): IterableIterator<number>;
/**
* Returns an array of key, value pairs for every entry in the array
*/
entries(): IterableIterator<[number, number]>;
/**
* Returns an list of keys in the array
*/
keys(): IterableIterator<number>;
/**
* Returns an list of values in the array
*/
values(): IterableIterator<number>;
}
/**
* @category Platform
* @tags unstable
*/
declare interface Float16Constructor {
new (elements: Iterable<number>): Float16;
/**
* Creates an array from an array-like or iterable object.
* @param arrayLike An array-like or iterable object to convert to an array.
* @param mapfn A mapping function to call on every element of the array.
* @param thisArg Value of 'this' used to invoke the mapfn.
*/
from(
arrayLike: Iterable<number>,
mapfn?: (v: number, k: number) => number,
thisArg?: any,
): Float16;
}
/**
* @category Platform
* @tags unstable
*/
declare interface Float16Array {
readonly [Symbol.toStringTag]: "Float16Array";
}
/**
* @category Platform
* @tags unstable
*/
declare interface Float16Array {
/**
* Determines whether an array includes a certain element, returning true or false as appropriate.
* @param searchElement The element to search for.
* @param fromIndex The position in this array at which to begin searching for searchElement.
*/
includes(searchElement: number, fromIndex?: number): boolean;
}
/**
* @category Platform
* @tags unstable
*/
declare interface Float16ArrayConstructor {
new (): Float16Array;
}
/**
* @category Platform
* @tags unstable
*/
declare interface Float16Array {
/**
* Returns the item located at the specified index.
* @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
*/
at(index: number): number | undefined;
}
/**
* @category Platform
* @tags unstable
*/
declare interface Float16Array {
/**
* Returns the value of the last element in the array where predicate is true, and undefined
* otherwise.
* @param predicate findLast calls predicate once for each element of the array, in descending
* order, until it finds one where predicate returns true. If such an element is found, findLast
* immediately returns that element value. Otherwise, findLast returns undefined.
* @param thisArg If provided, it will be used as the this value for each invocation of
* predicate. If it is not provided, undefined is used instead.
*/
findLast<S extends number>(
predicate: (
value: number,
index: number,
array: Float16Array,
) => value is S,
thisArg?: any,
): S | undefined;
findLast(
predicate: (
value: number,
index: number,
array: Float16Array,
) => unknown,
thisArg?: any,
): number | undefined;
/**
* Returns the index of the last element in the array where predicate is true, and -1
* otherwise.
* @param predicate findLastIndex calls predicate once for each element of the array, in descending
* order, until it finds one where predicate returns true. If such an element is found,
* findLastIndex immediately returns that element index. Otherwise, findLastIndex returns -1.
* @param thisArg If provided, it will be used as the this value for each invocation of
* predicate. If it is not provided, undefined is used instead.
*/
findLastIndex(
predicate: (
value: number,
index: number,
array: Float16Array,
) => unknown,
thisArg?: any,
): number;
/**
* Copies the array and returns the copy with the elements in reverse order.
*/
toReversed(): Float16Array;
/**
* Copies and sorts the array.
* @param compareFn Function used to determine the order of the elements. It is expected to return
* a negative value if the first argument is less than the second argument, zero if they're equal, and a positive
* value otherwise. If omitted, the elements are sorted in ascending order.
* ```ts
* const myNums = Float16Array.from([11.25, 2, -22.5, 1]);
* myNums.toSorted((a, b) => a - b) // Float16Array(4) [-22.5, 1, 2, 11.5]
* ```
*/
toSorted(compareFn?: (a: number, b: number) => number): Float16Array;
/**
* Copies the array and inserts the given number at the provided index.
* @param index The index of the value to overwrite. If the index is
* negative, then it replaces from the end of the array.
* @param value The value to insert into the copied array.
* @returns A copy of the original array with the inserted value.
*/
with(index: number, value: number): Float16Array;
}
/**
* @category Platform
* @tags unstable
*/
declare interface DataView {
/**
* Gets the Float16 value at the specified byte offset from the start of the view. There is
* no alignment constraint; multi-byte values may be fetched from any offset.
* @param byteOffset The place in the buffer at which the value should be retrieved.
* @param littleEndian If false or undefined, a big-endian value should be read.
*/
getFloat16(byteOffset: number, littleEndian?: boolean): number;
/**
* Stores an Float16 value at the specified byte offset from the start of the view.
* @param byteOffset The place in the buffer at which the value should be set.
* @param value The value to set.
* @param littleEndian If false or undefined, a big-endian value should be written.
*/
setFloat16(byteOffset: number, value: number, littleEndian?: boolean): void;
}
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