mirror of
https://github.com/denoland/deno.git
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b40086fd7d
This commit changes "include_js_files!" macro from "deno_core" in a way that "dir" option doesn't cause specifiers to be rewritten to include it. Example: ``` include_js_files! { dir "js", "hello.js", } ``` The above definition required embedders to use: `import ... from "internal:<ext_name>/js/hello.js"`. But with this change, the "js" directory in which the files are stored is an implementation detail, which for embedders results in: `import ... from "internal:<ext_name>/hello.js"`. The directory the files are stored in, is an implementation detail and in some cases might result in a significant size difference for the snapshot. As an example, in "deno_node" extension, we store the source code in "polyfills" directory; which resulted in each specifier to look like "internal:deno_node/polyfills/<module_name>", but with this change it's "internal:deno_node/<module_name>". Given that "deno_node" has over 100 files, many of them having several import specifiers to the same extension, this change removes 10 characters from each import specifier.
320 lines
6.8 KiB
JavaScript
320 lines
6.8 KiB
JavaScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.
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// deno-lint-ignore-file
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import { aggregateTwoErrors, ERR_MULTIPLE_CALLBACK } from "internal:deno_node/internal/errors.ts";
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import * as process from "internal:deno_node/_process/process.ts";
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const kDestroy = Symbol("kDestroy");
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const kConstruct = Symbol("kConstruct");
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function checkError(err, w, r) {
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if (err) {
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// Avoid V8 leak, https://github.com/nodejs/node/pull/34103#issuecomment-652002364
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err.stack; // eslint-disable-line no-unused-expressions
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if (w && !w.errored) {
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w.errored = err;
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}
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if (r && !r.errored) {
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r.errored = err;
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}
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}
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}
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// Backwards compat. cb() is undocumented and unused in core but
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// unfortunately might be used by modules.
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function destroy(err, cb) {
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const r = this._readableState;
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const w = this._writableState;
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// With duplex streams we use the writable side for state.
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const s = w || r;
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if ((w && w.destroyed) || (r && r.destroyed)) {
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if (typeof cb === "function") {
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cb();
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}
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return this;
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}
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// We set destroyed to true before firing error callbacks in order
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// to make it re-entrance safe in case destroy() is called within callbacks
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checkError(err, w, r);
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if (w) {
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w.destroyed = true;
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}
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if (r) {
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r.destroyed = true;
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}
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// If still constructing then defer calling _destroy.
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if (!s.constructed) {
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this.once(kDestroy, function (er) {
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_destroy(this, aggregateTwoErrors(er, err), cb);
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});
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} else {
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_destroy(this, err, cb);
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}
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return this;
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}
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function _destroy(self, err, cb) {
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let called = false;
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function onDestroy(err) {
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if (called) {
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return;
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}
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called = true;
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const r = self._readableState;
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const w = self._writableState;
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checkError(err, w, r);
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if (w) {
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w.closed = true;
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}
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if (r) {
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r.closed = true;
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}
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if (typeof cb === "function") {
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cb(err);
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}
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if (err) {
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process.nextTick(emitErrorCloseNT, self, err);
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} else {
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process.nextTick(emitCloseNT, self);
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}
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}
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try {
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const result = self._destroy(err || null, onDestroy);
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if (result != null) {
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const then = result.then;
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if (typeof then === "function") {
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then.call(
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result,
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function () {
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process.nextTick(onDestroy, null);
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},
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function (err) {
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process.nextTick(onDestroy, err);
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},
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);
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}
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}
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} catch (err) {
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onDestroy(err);
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}
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}
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function emitErrorCloseNT(self, err) {
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emitErrorNT(self, err);
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emitCloseNT(self);
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}
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function emitCloseNT(self) {
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const r = self._readableState;
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const w = self._writableState;
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if (w) {
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w.closeEmitted = true;
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}
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if (r) {
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r.closeEmitted = true;
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}
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if ((w && w.emitClose) || (r && r.emitClose)) {
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self.emit("close");
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}
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}
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function emitErrorNT(self, err) {
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const r = self._readableState;
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const w = self._writableState;
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if ((w && w.errorEmitted) || (r && r.errorEmitted)) {
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return;
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}
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if (w) {
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w.errorEmitted = true;
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}
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if (r) {
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r.errorEmitted = true;
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}
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self.emit("error", err);
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}
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function undestroy() {
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const r = this._readableState;
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const w = this._writableState;
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if (r) {
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r.constructed = true;
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r.closed = false;
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r.closeEmitted = false;
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r.destroyed = false;
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r.errored = null;
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r.errorEmitted = false;
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r.reading = false;
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r.ended = false;
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r.endEmitted = false;
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}
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if (w) {
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w.constructed = true;
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w.destroyed = false;
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w.closed = false;
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w.closeEmitted = false;
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w.errored = null;
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w.errorEmitted = false;
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w.ended = false;
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w.ending = false;
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w.finalCalled = false;
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w.prefinished = false;
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w.finished = false;
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}
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}
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function errorOrDestroy(stream, err, sync) {
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// We have tests that rely on errors being emitted
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// in the same tick, so changing this is semver major.
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// For now when you opt-in to autoDestroy we allow
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// the error to be emitted nextTick. In a future
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// semver major update we should change the default to this.
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const r = stream._readableState;
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const w = stream._writableState;
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if ((w && w.destroyed) || (r && r.destroyed)) {
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return this;
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}
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if ((r && r.autoDestroy) || (w && w.autoDestroy)) {
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stream.destroy(err);
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} else if (err) {
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// Avoid V8 leak, https://github.com/nodejs/node/pull/34103#issuecomment-652002364
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err.stack; // eslint-disable-line no-unused-expressions
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if (w && !w.errored) {
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w.errored = err;
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}
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if (r && !r.errored) {
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r.errored = err;
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}
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if (sync) {
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process.nextTick(emitErrorNT, stream, err);
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} else {
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emitErrorNT(stream, err);
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}
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}
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}
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function construct(stream, cb) {
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if (typeof stream._construct !== "function") {
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return;
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}
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const r = stream._readableState;
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const w = stream._writableState;
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if (r) {
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r.constructed = false;
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}
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if (w) {
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w.constructed = false;
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}
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stream.once(kConstruct, cb);
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if (stream.listenerCount(kConstruct) > 1) {
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// Duplex
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return;
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}
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process.nextTick(constructNT, stream);
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}
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function constructNT(stream) {
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let called = false;
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function onConstruct(err) {
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if (called) {
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errorOrDestroy(stream, err ?? new ERR_MULTIPLE_CALLBACK());
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return;
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}
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called = true;
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const r = stream._readableState;
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const w = stream._writableState;
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const s = w || r;
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if (r) {
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r.constructed = true;
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}
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if (w) {
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w.constructed = true;
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}
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if (s.destroyed) {
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stream.emit(kDestroy, err);
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} else if (err) {
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errorOrDestroy(stream, err, true);
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} else {
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process.nextTick(emitConstructNT, stream);
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}
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}
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try {
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const result = stream._construct(onConstruct);
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if (result != null) {
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const then = result.then;
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if (typeof then === "function") {
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then.call(
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result,
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function () {
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process.nextTick(onConstruct, null);
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},
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function (err) {
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process.nextTick(onConstruct, err);
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},
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);
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}
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}
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} catch (err) {
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onConstruct(err);
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}
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}
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function emitConstructNT(stream) {
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stream.emit(kConstruct);
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}
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function isRequest(stream) {
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return stream && stream.setHeader && typeof stream.abort === "function";
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}
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// Normalize destroy for legacy.
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function destroyer(stream, err) {
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if (!stream) return;
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if (isRequest(stream)) return stream.abort();
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if (isRequest(stream.req)) return stream.req.abort();
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if (typeof stream.destroy === "function") return stream.destroy(err);
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if (typeof stream.close === "function") return stream.close();
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}
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export default {
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construct,
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destroyer,
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destroy,
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undestroy,
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errorOrDestroy,
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};
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export { construct, destroy, destroyer, errorOrDestroy, undestroy };
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