summaryrefslogtreecommitdiff
path: root/ext/node/polyfills/internal/streams/legacy.mjs
diff options
context:
space:
mode:
Diffstat (limited to 'ext/node/polyfills/internal/streams/legacy.mjs')
-rw-r--r--ext/node/polyfills/internal/streams/legacy.mjs113
1 files changed, 0 insertions, 113 deletions
diff --git a/ext/node/polyfills/internal/streams/legacy.mjs b/ext/node/polyfills/internal/streams/legacy.mjs
deleted file mode 100644
index bb2d30bc4..000000000
--- a/ext/node/polyfills/internal/streams/legacy.mjs
+++ /dev/null
@@ -1,113 +0,0 @@
-// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
-// Copyright Joyent and Node contributors. All rights reserved. MIT license.
-// deno-lint-ignore-file
-
-import EE from "internal:deno_node/events.ts";
-
-function Stream(opts) {
- EE.call(this, opts);
-}
-Object.setPrototypeOf(Stream.prototype, EE.prototype);
-Object.setPrototypeOf(Stream, EE);
-
-Stream.prototype.pipe = function (dest, options) {
- // deno-lint-ignore no-this-alias
- const source = this;
-
- function ondata(chunk) {
- if (dest.writable && dest.write(chunk) === false && source.pause) {
- source.pause();
- }
- }
-
- source.on("data", ondata);
-
- function ondrain() {
- if (source.readable && source.resume) {
- source.resume();
- }
- }
-
- dest.on("drain", ondrain);
-
- // If the 'end' option is not supplied, dest.end() will be called when
- // source gets the 'end' or 'close' events. Only dest.end() once.
- if (!dest._isStdio && (!options || options.end !== false)) {
- source.on("end", onend);
- source.on("close", onclose);
- }
-
- let didOnEnd = false;
- function onend() {
- if (didOnEnd) return;
- didOnEnd = true;
-
- dest.end();
- }
-
- function onclose() {
- if (didOnEnd) return;
- didOnEnd = true;
-
- if (typeof dest.destroy === "function") dest.destroy();
- }
-
- // Don't leave dangling pipes when there are errors.
- function onerror(er) {
- cleanup();
- if (EE.listenerCount(this, "error") === 0) {
- this.emit("error", er);
- }
- }
-
- prependListener(source, "error", onerror);
- prependListener(dest, "error", onerror);
-
- // Remove all the event listeners that were added.
- function cleanup() {
- source.removeListener("data", ondata);
- dest.removeListener("drain", ondrain);
-
- source.removeListener("end", onend);
- source.removeListener("close", onclose);
-
- source.removeListener("error", onerror);
- dest.removeListener("error", onerror);
-
- source.removeListener("end", cleanup);
- source.removeListener("close", cleanup);
-
- dest.removeListener("close", cleanup);
- }
-
- source.on("end", cleanup);
- source.on("close", cleanup);
-
- dest.on("close", cleanup);
- dest.emit("pipe", source);
-
- // Allow for unix-like usage: A.pipe(B).pipe(C)
- return dest;
-};
-
-function prependListener(emitter, event, fn) {
- // Sadly this is not cacheable as some libraries bundle their own
- // event emitter implementation with them.
- if (typeof emitter.prependListener === "function") {
- return emitter.prependListener(event, fn);
- }
-
- // This is a hack to make sure that our error handler is attached before any
- // userland ones. NEVER DO THIS. This is here only because this code needs
- // to continue to work with older versions of Node.js that do not include
- // the prependListener() method. The goal is to eventually remove this hack.
- if (!emitter._events || !emitter._events[event]) {
- emitter.on(event, fn);
- } else if (Array.isArray(emitter._events[event])) {
- emitter._events[event].unshift(fn);
- } else {
- emitter._events[event] = [fn, emitter._events[event]];
- }
-}
-
-export { prependListener, Stream };