mirror of
https://github.com/denoland/deno
synced 2024-09-17 23:22:46 +00:00
88 lines
2.8 KiB
TypeScript
88 lines
2.8 KiB
TypeScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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import { core } from "./core.ts";
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import * as dispatch from "./dispatch.ts";
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import { sendSync } from "./dispatch_json.ts";
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import { assert } from "./util.ts";
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import * as util from "./util.ts";
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import { OperatingSystem, Arch } from "./build.ts";
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import { setBuildInfo } from "./build.ts";
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import { setVersions } from "./version.ts";
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import { setLocation } from "./location.ts";
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import { setPrepareStackTrace } from "./error_stack.ts";
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interface Start {
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cwd: string;
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pid: number;
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args: string[];
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location: string; // Absolute URL.
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repl: boolean;
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debugFlag: boolean;
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depsFlag: boolean;
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typesFlag: boolean;
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versionFlag: boolean;
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denoVersion: string;
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v8Version: string;
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tsVersion: string;
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noColor: boolean;
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os: OperatingSystem;
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arch: Arch;
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}
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export let OPS_CACHE: { [name: string]: number };
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// TODO(bartlomieju): temporary solution, must be fixed when moving
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// dispatches to separate crates
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export function initOps(): void {
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OPS_CACHE = core.ops();
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for (const [name, opId] of Object.entries(OPS_CACHE)) {
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core.setAsyncHandler(opId, dispatch.getAsyncHandler(name));
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}
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}
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/**
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* This function bootstraps JS runtime, unfortunately some of runtime
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* code depends on information like "os" and thus getting this information
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* is required at startup.
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*/
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export function start(preserveDenoNamespace = true, source?: string): Start {
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initOps();
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// First we send an empty `Start` message to let the privileged side know we
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// are ready. The response should be a `StartRes` message containing the CLI
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// args and other info.
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const s = sendSync("op_start");
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setVersions(s.denoVersion, s.v8Version, s.tsVersion);
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setBuildInfo(s.os, s.arch);
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util.setLogDebug(s.debugFlag, source);
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// TODO(bartlomieju): this field should always be set
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assert(s.location.length > 0);
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setLocation(s.location);
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setPrepareStackTrace(Error);
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// TODO(bartlomieju): I don't like that it's mixed in here, when
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// compiler and worker runtimes call this funtion and they don't use
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// Deno namespace (sans shared queue - Deno.core)
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// pid and noColor need to be set in the Deno module before it's set to be
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// frozen.
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util.immutableDefine(globalThis.Deno, "pid", s.pid);
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util.immutableDefine(globalThis.Deno, "noColor", s.noColor);
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Object.freeze(globalThis.Deno);
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if (preserveDenoNamespace) {
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util.immutableDefine(globalThis, "Deno", globalThis.Deno);
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// Deno.core could ONLY be safely frozen here (not in globals.ts)
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// since shared_queue.js will modify core properties.
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Object.freeze(globalThis.Deno.core);
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// core.sharedQueue is an object so we should also freeze it.
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Object.freeze(globalThis.Deno.core.sharedQueue);
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} else {
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// Remove globalThis.Deno
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delete globalThis.Deno;
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assert(globalThis.Deno === undefined);
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}
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return s;
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}
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