mirror of
https://github.com/react/react-native-devtools-frontend.git
synced 2026-09-30 01:07:01 +08:00
Tim van der Lippe
40755599ae
R=mathias@chromium.org,jacktfranklin@chromium.org Fixed: 1082789 Change-Id: I2cf3c221e748654c296f35c3f149b1f76684f4a3 Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2612903 Reviewed-by: Jack Franklin <jacktfranklin@chromium.org> Reviewed-by: Mathias Bynens <mathias@chromium.org> Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>
62 lines
2.0 KiB
JavaScript
62 lines
2.0 KiB
JavaScript
// Copyright 2020 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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const fs = require('fs');
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const path = require('path');
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const childProcess = require('child_process');
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const cwd = process.cwd();
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const env = process.env;
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const frontEndDir = path.join(cwd, 'front_end');
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const testsDir = path.join(cwd, 'test');
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// Extract the target if it's provided.
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let target = 'Default';
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const targetArg = process.argv.find(value => value.startsWith('--target='));
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if (targetArg) {
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target = targetArg.slice('--target='.length);
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}
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let restartBuild = false;
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let autoninja;
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const changedFiles = new Set();
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const onFileChange = (_, fileName) => {
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// Some filesystems emit multiple events in quick succession for a
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// single file change. Here we track the changed files, and reset
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// after a short timeout.
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if (changedFiles.has(fileName)) {
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return;
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}
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changedFiles.add(fileName);
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setTimeout(() => {
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changedFiles.delete(fileName);
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}, 250);
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// If the exitCode is null, autoninja is still running so stop it
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// and try to restart it again.
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const ninjaProcessExists = Boolean(autoninja && autoninja.pid);
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if (ninjaProcessExists) {
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const isRunning = ninjaProcessExists && autoninja.exitCode === null;
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if (isRunning) {
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autoninja.kill();
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restartBuild = true;
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}
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return;
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}
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autoninja = childProcess.spawn('autoninja', ['-C', `out/${target}`], {cwd, env, stdio: 'inherit'});
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autoninja.on('close', () => {
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autoninja = null;
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if (restartBuild) {
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restartBuild = false;
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console.log(`\n${fileName} changed, restarting ninja\n`);
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onFileChange();
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}
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});
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};
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// Watch the front_end and test folder and build on any change.
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console.log(`Watching for changes in ${frontEndDir} and ${testsDir}; building to out/${target}`);
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fs.watch(`${frontEndDir}`, {recursive: true}, onFileChange);
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fs.watch(`${testsDir}`, {recursive: true}, onFileChange);
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