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watch: fix infinite loop when passing --watch=true flag #51160

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merged 1 commit into from
Dec 16, 2023
Merged

watch: fix infinite loop when passing --watch=true flag #51160

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2 changes: 1 addition & 1 deletion lib/internal/main/watch_mode.js
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ const kCommandStr = inspect(ArrayPrototypeJoin(kCommand, ' '));
const args = ArrayPrototypeFilter(process.execArgv, (arg, i, arr) =>
!StringPrototypeStartsWith(arg, '--watch-path') &&
(!arr[i - 1] || !StringPrototypeStartsWith(arr[i - 1], '--watch-path')) &&
arg !== '--watch' && arg !== '--watch-preserve-output');
arg !== '--watch' && !StringPrototypeStartsWith(arg, '--watch=') && arg !== '--watch-preserve-output');
ArrayPrototypePushApply(args, kCommand);

const watcher = new FilesWatcher({ debounce: 200, mode: kShouldFilterModules ? 'filter' : 'all' });
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20 changes: 18 additions & 2 deletions test/sequential/test-watch-mode.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -30,9 +30,9 @@ function createTmpFile(content = 'console.log("running");', ext = '.js', basenam
}

async function runWriteSucceed({
file, watchedFile, args = [file], completed = 'Completed running', restarts = 2
file, watchedFile, watchFlag = '--watch', args = [file], completed = 'Completed running', restarts = 2, options = {}
}) {
const child = spawn(execPath, ['--watch', '--no-warnings', ...args], { encoding: 'utf8', stdio: 'pipe' });
const child = spawn(execPath, [watchFlag, '--no-warnings', ...args], { encoding: 'utf8', stdio: 'pipe', ...options });
let completes = 0;
let cancelRestarts = () => {};
let stderr = '';
Expand Down Expand Up @@ -88,6 +88,22 @@ async function failWriteSucceed({ file, watchedFile }) {
tmpdir.refresh();

describe('watch mode', { concurrency: true, timeout: 60_000 }, () => {
it('should watch changes to a file', async () => {
const file = createTmpFile();
const { stderr, stdout } = await runWriteSucceed({ file, watchedFile: file, watchFlag: '--watch=true', options: {
timeout: 10000
} });

assert.strictEqual(stderr, '');
assert.deepStrictEqual(stdout, [
'running',
`Completed running ${inspect(file)}`,
`Restarting ${inspect(file)}`,
'running',
`Completed running ${inspect(file)}`,
]);
});

it('should watch changes to a file - event loop ended', async () => {
const file = createTmpFile();
const { stderr, stdout } = await runWriteSucceed({ file, watchedFile: file });
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