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https://github.com/denoland/deno
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46 lines
1.6 KiB
Markdown
46 lines
1.6 KiB
Markdown
# `deno_runtime` crate
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[](https://crates.io/crates/deno_runtime)
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[](https://docs.rs/deno_runtime)
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This is a slim version of the Deno CLI which removes typescript integration and
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various tooling (like lint and doc). Basically only JavaScript execution with
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Deno's operating system bindings (ops).
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## Stability
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This crate is built using battle-tested modules that were originally in the
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`deno` crate, however the API of this crate is subject to rapid and breaking
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changes.
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## `MainWorker`
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The main API of this crate is `MainWorker`. `MainWorker` is a structure
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encapsulating `deno_core::JsRuntime` with a set of ops used to implement `Deno`
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namespace.
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When creating a `MainWorker` implementors must call `MainWorker::bootstrap` to
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prepare JS runtime for use.
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`MainWorker` is highly configurable and allows to customize many of the
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runtime's properties:
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- module loading implementation
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- error formatting
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- support for source maps
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- support for V8 inspector and Chrome Devtools debugger
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- HTTP client user agent, CA certificate
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- random number generator seed
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## `Worker` Web API
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`deno_runtime` comes with support for `Worker` Web API. The `Worker` API is
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implemented using `WebWorker` structure.
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When creating a new instance of `MainWorker` implementors must provide a
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callback function that is used when creating a new instance of `Worker`.
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All `WebWorker` instances are descendents of `MainWorker` which is responsible
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for setting up communication with child worker. Each `WebWorker` spawns a new OS
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thread that is dedicated solely to that worker.
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