mirror of
https://github.com/bytedance/deer-flow.git
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ddd9aec558
* fix(frontend): default to Webpack over Turbopack in dev to avoid PostCSS worker leak on macOS On macOS arm64, Turbopack + Next.js 16.2.11 + Tailwind CSS v4 causes an unbounded spawn of PostCSS evaluator processes that consume high CPU and memory and never return a response. Webpack is unaffected. Change the no-override default in getDevBundler() from platform-dependent Turbopack (all non-Windows) to Webpack. DEER_FLOW_DEV_BUNDLER=turbo continues to work as an explicit opt-in for local diagnosis. Fixes #5132 * docs(frontend): address webpack default review feedback * docs(frontend): clarify webpack default rationale
76 lines
2.0 KiB
JavaScript
76 lines
2.0 KiB
JavaScript
#!/usr/bin/env node
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import { spawn } from "node:child_process";
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import path from "node:path";
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import { fileURLToPath } from "node:url";
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/**
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* @param {string} _platform
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* @param {Record<string, string | undefined>} env
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*/
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export function getDevBundler(_platform = process.platform, env = process.env) {
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const override = env.DEER_FLOW_DEV_BUNDLER?.trim();
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if (override) {
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if (override !== "turbo" && override !== "webpack") {
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throw new Error(
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'DEER_FLOW_DEV_BUNDLER must be either "turbo" or "webpack"',
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);
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}
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return override;
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}
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// Keep Webpack as the cross-platform default while #5132's Turbopack
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// PostCSS worker leak remains unfixed in a stable Next.js release. Retain
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// the platform parameter so restoring the platform-aware default stays a
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// small change once the upstream fix is stable and verified on macOS/Linux.
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return "webpack";
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}
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/**
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* @param {string} platform
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* @param {string[]} extraArgs
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* @param {Record<string, string | undefined>} env
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*/
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export function getNextDevArgs(
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platform = process.platform,
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extraArgs = [],
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env = process.env,
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) {
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const nextArgs = extraArgs[0] === "--" ? extraArgs.slice(1) : extraArgs;
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return ["dev", `--${getDevBundler(platform, env)}`, ...nextArgs];
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}
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function startDevServer() {
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const frontendDir = fileURLToPath(new URL("..", import.meta.url));
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const nextBin = fileURLToPath(
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new URL("../node_modules/next/dist/bin/next", import.meta.url),
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);
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const child = spawn(
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process.execPath,
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[nextBin, ...getNextDevArgs(process.platform, process.argv.slice(2))],
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{
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cwd: frontendDir,
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env: process.env,
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stdio: "inherit",
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},
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);
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child.on("error", (error) => {
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console.error(`Failed to start Next.js: ${error.message}`);
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process.exitCode = 1;
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});
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child.on("exit", (code, signal) => {
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if (signal) {
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process.kill(process.pid, signal);
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return;
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}
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process.exitCode = code ?? 1;
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});
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}
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if (
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process.argv[1] &&
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path.resolve(process.argv[1]) === fileURLToPath(import.meta.url)
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) {
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startDevServer();
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}
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