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fea495a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | import { existsSync } from 'fs';
import { readFile, writeFile, mkdir } from 'fs/promises';
import { dirname, join } from 'path';
import { middlewareResponse } from './middleware-response';
import { devToolsConfigSchema } from '../shared/devtools-config-schema';
import { deepMerge } from '../shared/deepmerge';
const DEVTOOLS_CONFIG_FILENAME = 'next-devtools-config.json';
const DEVTOOLS_CONFIG_MIDDLEWARE_ENDPOINT = '/__nextjs_devtools_config';
export function devToolsConfigMiddleware(param) {
let { distDir, sendUpdateSignal } = param;
const configPath = join(distDir, 'cache', DEVTOOLS_CONFIG_FILENAME);
return async function devToolsConfigMiddlewareHandler(req, res, next) {
const { pathname } = new URL("http://n" + req.url);
if (pathname !== DEVTOOLS_CONFIG_MIDDLEWARE_ENDPOINT) {
return next();
}
if (req.method !== 'POST') {
return middlewareResponse.methodNotAllowed(res);
}
const currentConfig = await getDevToolsConfig(distDir);
const chunks = [];
for await (const chunk of req){
chunks.push(Buffer.from(chunk));
}
let body = Buffer.concat(chunks).toString('utf8');
try {
body = JSON.parse(body);
} catch (error) {
console.error('[Next.js DevTools] Invalid config body passed:', error);
return middlewareResponse.badRequest(res);
}
const validation = devToolsConfigSchema.safeParse(body);
if (!validation.success) {
console.error('[Next.js DevTools] Invalid config passed:', validation.error.message);
return middlewareResponse.badRequest(res);
}
const newConfig = deepMerge(currentConfig, validation.data);
await writeFile(configPath, JSON.stringify(newConfig, null, 2));
sendUpdateSignal(newConfig);
return middlewareResponse.noContent(res);
};
}
export async function getDevToolsConfig(distDir) {
const configPath = join(distDir, 'cache', DEVTOOLS_CONFIG_FILENAME);
if (!existsSync(configPath)) {
await mkdir(dirname(configPath), {
recursive: true
});
await writeFile(configPath, JSON.stringify({}));
return {};
}
return JSON.parse(await readFile(configPath, 'utf8'));
}
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