54 lines
2.3 KiB
JavaScript
54 lines
2.3 KiB
JavaScript
import { existsSync } from 'fs';
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import { readFile, writeFile, mkdir } from 'fs/promises';
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import { dirname, join } from 'path';
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import { middlewareResponse } from './middleware-response';
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import { devToolsConfigSchema } from '../shared/devtools-config-schema';
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import { deepMerge } from '../shared/deepmerge';
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const DEVTOOLS_CONFIG_FILENAME = 'next-devtools-config.json';
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const DEVTOOLS_CONFIG_MIDDLEWARE_ENDPOINT = '/__nextjs_devtools_config';
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export function devToolsConfigMiddleware({ distDir, sendUpdateSignal }) {
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const configPath = join(distDir, 'cache', DEVTOOLS_CONFIG_FILENAME);
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return async function devToolsConfigMiddlewareHandler(req, res, next) {
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const { pathname } = new URL(`http://n${req.url}`);
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if (pathname !== DEVTOOLS_CONFIG_MIDDLEWARE_ENDPOINT) {
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return next();
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}
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if (req.method !== 'POST') {
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return middlewareResponse.methodNotAllowed(res);
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}
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const currentConfig = await getDevToolsConfig(distDir);
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const chunks = [];
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for await (const chunk of req){
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chunks.push(Buffer.from(chunk));
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}
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let body = Buffer.concat(chunks).toString('utf8');
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try {
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body = JSON.parse(body);
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} catch (error) {
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console.error('[Next.js DevTools] Invalid config body passed:', error);
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return middlewareResponse.badRequest(res);
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}
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const validation = devToolsConfigSchema.safeParse(body);
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if (!validation.success) {
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console.error('[Next.js DevTools] Invalid config passed:', validation.error.message);
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return middlewareResponse.badRequest(res);
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}
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const newConfig = deepMerge(currentConfig, validation.data);
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await writeFile(configPath, JSON.stringify(newConfig, null, 2));
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sendUpdateSignal(newConfig);
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return middlewareResponse.noContent(res);
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};
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}
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export async function getDevToolsConfig(distDir) {
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const configPath = join(distDir, 'cache', DEVTOOLS_CONFIG_FILENAME);
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if (!existsSync(configPath)) {
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await mkdir(dirname(configPath), {
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recursive: true
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});
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await writeFile(configPath, JSON.stringify({}));
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return {};
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}
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return JSON.parse(await readFile(configPath, 'utf8'));
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}
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//# sourceMappingURL=devtools-config-middleware.js.map
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