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denoland-deno/ext/node/polyfills/_core.ts
Bartek Iwańczuk d47147fb6a
feat(ext/node): embed std/node into the snapshot (#17724)
This commit moves "deno_std/node" in "ext/node" crate. The code is
transpiled and snapshotted during the build process.

During the first pass a minimal amount of work was done to create the
snapshot, a lot of code in "ext/node" depends on presence of "Deno"
global. This code will be gradually fixed in the follow up PRs to migrate
it to import relevant APIs from "internal:" modules.

Currently the code from snapshot is not used in any way, and all
Node/npm compatibility still uses code from 
"https://deno.land/std/node" (or from the location specified by 
"DENO_NODE_COMPAT_URL"). This will also be handled in a follow 
up PRs.

---------

Co-authored-by: crowlkats <crowlkats@toaxl.com>
Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
Co-authored-by: Yoshiya Hinosawa <stibium121@gmail.com>
2023-02-14 17:38:45 +01:00

83 lines
2.6 KiB
TypeScript

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