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Malte UblandClaude Opus 5.5
f80e4c1a09
isarray, safe-buffer, process-nextick-args, inherits and util-deprecate evaluate to a Node builtin on Node 24 at their checked major versions, so a require of one compiles as that builtin expression at the require's position: from an opted-in package's files (the installed version where Node's resolution finds it), from the program's own CommonJS files, and through an esbuild __commonJS chunk whose pnpm path key names the package and its version. The package's files never join the program. readable-stream 2.x and 4.x compile as node:stream, the package's own READABLE_STREAM=disable behavior (a documented divergence). A use of the entry's export picks the builtin module (member reads of the carried classes) or stream.Readable (value uses); a mixture keeps the package. 3.x stays as is: its disable branch throws on Node 24. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
50 lines
1.6 KiB
JavaScript
50 lines
1.6 KiB
JavaScript
// readable-stream 2.x compiles as Node's builtin stream module: the
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// package's own READABLE_STREAM=disable behavior, which this program
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// selects before its first require so Node takes the same branch. (Run
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// without the variable, Node loads the package's JavaScript streams, whose
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// output can differ: class identity, `instanceof` against the builtin
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// classes, and error messages.) node_modules vendors readable-stream
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// 2.3.8 and its dependencies, unmodified (MIT).
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"use strict";
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process.env.READABLE_STREAM = "disable";
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var stream = require("stream");
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var rs = require("readable-stream");
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var Transform = require("readable-stream/transform");
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var PassThrough = require("readable-stream/passthrough");
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var Writable = require("readable-stream/writable");
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console.log(rs.Readable === stream.Readable, rs.Writable === stream.Writable);
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console.log(Transform === stream.Transform, PassThrough === stream.PassThrough);
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console.log(Writable === stream.Writable, typeof rs.Stream);
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function shout(words) {
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const source = new rs.Readable({ read: function () {} });
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const seen = [];
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const sink = new Writable({
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write: function (chunk, encoding, callback) {
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seen.push(String(chunk));
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callback();
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},
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});
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sink.on("finish", function () {
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console.log("piped", seen.join("|"));
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});
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source
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.pipe(
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new Transform({
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transform: function (chunk, encoding, callback) {
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callback(null, String(chunk).toUpperCase());
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},
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}),
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)
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.pipe(new PassThrough())
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.pipe(sink);
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words.forEach(function (w) {
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source.push(w);
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});
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source.push(null);
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}
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shout(["a", "bc", "def"]);
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console.log("sync done");
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