mirror of
https://github.com/denoland/deno.git
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84 lines
2.6 KiB
TypeScript
84 lines
2.6 KiB
TypeScript
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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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// This module provides an interface to `Deno.core`. For environments
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// that don't have access to `Deno.core` some APIs are polyfilled, while
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// some are unavailble and throw on call.
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// Note: deno_std shouldn't use Deno.core namespace. We should minimize these
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// usages.
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import { TextEncoder } from "internal:deno_web/08_text_encoding.js";
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// deno-lint-ignore no-explicit-any
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let DenoCore: any;
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// deno-lint-ignore no-explicit-any
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const { Deno } = globalThis as any;
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// @ts-ignore Deno.core is not defined in types
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if (Deno?.[Deno.internal]?.core) {
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// @ts-ignore Deno[Deno.internal].core is not defined in types
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DenoCore = Deno[Deno.internal].core;
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} else if (Deno?.core) {
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// @ts-ignore Deno.core is not defined in types
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DenoCore = Deno.core;
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} else {
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DenoCore = {};
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}
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export const core = {
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runMicrotasks: DenoCore.runMicrotasks ?? function () {
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throw new Error(
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"Deno.core.runMicrotasks() is not supported in this environment",
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);
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},
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setHasTickScheduled: DenoCore.setHasTickScheduled ?? function () {
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throw new Error(
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"Deno.core.setHasTickScheduled() is not supported in this environment",
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);
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},
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hasTickScheduled: DenoCore.hasTickScheduled ?? function () {
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throw new Error(
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"Deno.core.hasTickScheduled() is not supported in this environment",
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);
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},
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setNextTickCallback: DenoCore.setNextTickCallback ?? undefined,
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setMacrotaskCallback: DenoCore.setMacrotaskCallback ?? function () {
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throw new Error(
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"Deno.core.setNextTickCallback() is not supported in this environment",
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);
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},
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evalContext: DenoCore.evalContext ??
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function (_code: string, _filename: string) {
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throw new Error(
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"Deno.core.evalContext is not supported in this environment",
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);
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},
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encode: DenoCore.encode ?? function (chunk: string): Uint8Array {
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return new TextEncoder().encode(chunk);
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},
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eventLoopHasMoreWork: DenoCore.eventLoopHasMoreWork ?? function (): boolean {
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return false;
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},
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isProxy: DenoCore.isProxy ?? function (): boolean {
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return false;
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},
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getPromiseDetails: DenoCore.getPromiseDetails ??
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function (_promise: Promise<unknown>): [number, unknown] {
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throw new Error(
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"Deno.core.getPromiseDetails is not supported in this environment",
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);
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},
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setPromiseHooks: DenoCore.setPromiseHooks ?? function () {
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throw new Error(
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"Deno.core.setPromiseHooks is not supported in this environment",
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);
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},
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ops: DenoCore.ops ?? {
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op_napi_open(_filename: string) {
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throw new Error(
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"Node API is not supported in this environment",
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);
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},
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},
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};
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