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fd78953e1c
This commit adds several new "Deno.core" bindings: * "setNextTickCallback" * "hasScheduledTick" * "setHasScheduledTick" * "runMicrotasks" Additionally it changes "Deno.core.setMacrotaskCallback" to allow registering multiple callbacks. All these changes were necessary to polyfill "process.nextTick" in Node compat layer. Co-authored-by: Ben Noordhuis <info@bnoordhuis.nl>
111 lines
3.4 KiB
TypeScript
111 lines
3.4 KiB
TypeScript
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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// deno-lint-ignore-file no-explicit-any
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/// <reference no-default-lib="true" />
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/// <reference lib="esnext" />
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declare namespace Deno {
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declare namespace core {
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/** Call an op in Rust, and synchronously receive the result. */
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function opSync(
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opName: string,
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a?: any,
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b?: any,
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): any;
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/** Call an op in Rust, and asynchronously receive the result. */
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function opAsync(
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opName: string,
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a?: any,
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b?: any,
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): Promise<any>;
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/**
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* Retrieve a list of all registered ops, in the form of a map that maps op
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* name to internal numerical op id.
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*/
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function ops(): Record<string, number>;
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/**
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* Retrieve a list of all open resources, in the form of a map that maps
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* resource id to the resource name.
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*/
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function resources(): Record<string, string>;
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/**
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* Close the resource with the specified op id. Throws `BadResource` error
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* if resource doesn't exist in resource table.
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*/
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function close(rid: number): void;
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/**
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* Try close the resource with the specified op id; if resource with given
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* id doesn't exist do nothing.
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*/
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function tryClose(rid: number): void;
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/**
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* Read from a (stream) resource that implements read()
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*/
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function read(rid: number, buf: Uint8Array): Promise<number>;
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/**
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* Write to a (stream) resource that implements write()
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*/
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function write(rid: number, buf: Uint8Array): Promise<number>;
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/**
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* Shutdown a resource
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*/
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function shutdown(rid: number): Promise<void>;
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/** Get heap stats for current isolate/worker */
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function heapStats(): Record<string, number>;
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/** Encode a string to its Uint8Array representation. */
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function encode(input: string): Uint8Array;
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/**
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* Set a callback that will be called when the WebAssembly streaming APIs
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* (`WebAssembly.compileStreaming` and `WebAssembly.instantiateStreaming`)
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* are called in order to feed the source's bytes to the wasm compiler.
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* The callback is called with the source argument passed to the streaming
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* APIs and an rid to use with the wasm streaming ops.
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*
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* The callback should eventually invoke the following ops:
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* - `op_wasm_streaming_feed`. Feeds bytes from the wasm resource to the
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* compiler. Takes the rid and a `Uint8Array`.
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* - `op_wasm_streaming_abort`. Aborts the wasm compilation. Takes the rid
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* and an exception. Invalidates the resource.
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* - `op_wasm_streaming_set_url`. Sets a source URL for the wasm module.
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* Takes the rid and a string.
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* - To indicate the end of the resource, use `Deno.core.close()` with the
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* rid.
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*/
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function setWasmStreamingCallback(
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cb: (source: any, rid: number) => void,
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): void;
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/**
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* Set a callback that will be called after resolving ops and before resolving
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* macrotasks.
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*/
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function setNextTickCallback(
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cb: () => void,
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): void;
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/** Check if there's a scheduled "next tick". */
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function hasNextTickScheduled(): bool;
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/** Set a value telling the runtime if there are "next ticks" scheduled */
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function setHasNextTickScheduled(value: bool): void;
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/**
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* Set a callback that will be called after resolving ops and "next ticks".
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*/
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function setMacrotaskCallback(
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cb: () => bool,
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): void;
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}
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}
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