R524809
70 lines
2.3 KiB
JavaScript
70 lines
2.3 KiB
JavaScript
import { spawn } from 'node:child_process';
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import { createRequire } from 'node:module';
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import { createInterface } from 'node:readline';
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const require = createRequire(import.meta.url);
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const child = spawn(
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process.execPath,
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[require.resolve('@nestjs/cli/bin/nest.js'), 'start', '--watch'],
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{
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env: { ...process.env, DOODLE_DEV_LAUNCHER: '1' },
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stdio: ['inherit', 'pipe', 'inherit'],
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},
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);
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let opened = false;
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/** 使用系统默认浏览器，不经 shell 拼接 URL；打开失败不影响开发服务继续运行。 */
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function openBrowser(url) {
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const command =
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process.platform === 'darwin'
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? 'open'
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: process.platform === 'win32'
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? 'explorer.exe'
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: 'xdg-open';
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const browser = spawn(command, [url], { stdio: 'ignore', detached: true });
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const warn = () =>
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process.stderr.write(`无法自动打开浏览器，请手动访问：${url}\n`);
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browser.once('error', warn);
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browser.once('exit', (code) => {
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if (code !== 0 && code !== null) warn();
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});
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browser.unref();
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}
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// 只在本次启动器收到子服务的成功通知后打开；热更新重启不会反复弹出页面。
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const lines = createInterface({ input: child.stdout });
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lines.on('line', (line) => {
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let event;
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try {
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event = JSON.parse(line);
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} catch {
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/* Nest 编译提示不是 JSON，原样转发。 */
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}
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if (event?.event !== 'doodle-dev-ready') {
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process.stdout.write(`${line}\n`);
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return;
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}
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if (!event.swaggerUrl) {
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process.stdout.write('\nSwagger 已关闭（SWAGGER_ENABLED=false）。\n\n');
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return;
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}
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process.stdout.write(`\nSwagger: ${event.swaggerUrl}\n\n`);
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if (!opened) {
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opened = true;
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openBrowser(event.swaggerUrl);
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}
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});
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// 退出启动器时将信号传给 Nest，保留其对子服务的正常关闭和端口释放流程。
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for (const signal of ['SIGINT', 'SIGTERM'])
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process.on(signal, () => child.kill(signal));
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child.once('error', () => {
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process.stderr.write('开发服务启动失败，请检查本地 Node.js 与项目依赖。\n');
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process.exitCode = 1;
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});
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child.once('exit', (code, signal) => {
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lines.close();
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process.exitCode =
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code ?? (signal === 'SIGINT' ? 130 : signal === 'SIGTERM' ? 143 : 1);
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});
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