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denoland-deno/tests/node_compat/test/common/hijackstdio.js
Asher Gomez 29085895c9
chore: move tools/node_compat to tests/node_compat/runner (#23025)
The `tools/node_compat/node` submodule has been moved to
`tests/node_compat/runner/suite` and the remaining files within
`tools/node_compat` to `tests/node_compat/runner`.

Most of the changes are of the header within `tests/node_compat/test`
files. The `setup` and `test` tasks within `tests/node_comapt` execute
successfully.

Towards #22525
CC @mmastrac
2024-04-03 09:24:55 +11:00

39 lines
1 KiB
JavaScript

// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 18.12.1
// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
'use strict';
// Hijack stdout and stderr
const stdWrite = {};
function hijackStdWritable(name, listener) {
const stream = process[name];
const _write = stdWrite[name] = stream.write;
stream.writeTimes = 0;
stream.write = function(data, callback) {
try {
listener(data);
} catch (e) {
process.nextTick(() => { throw e; });
}
_write.call(stream, data, callback);
stream.writeTimes++;
};
}
function restoreWritable(name) {
process[name].write = stdWrite[name];
delete process[name].writeTimes;
}
module.exports = {
hijackStdout: hijackStdWritable.bind(null, 'stdout'),
hijackStderr: hijackStdWritable.bind(null, 'stderr'),
restoreStdout: restoreWritable.bind(null, 'stdout'),
restoreStderr: restoreWritable.bind(null, 'stderr'),
};