Download next.js/packages/next/src/lib/find-config.ts from Devendra174/react-code-dataset: direct link, hf CLI and curl.
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2.87 kB
| import findUp from 'next/dist/compiled/find-up' | |
| import { readFile } from 'fs/promises' | |
| import JSON5 from 'next/dist/compiled/json5' | |
| import { pathToFileURL } from 'url' | |
| type RecursivePartial<T> = { | |
| [P in keyof T]?: RecursivePartial<T[P]> | |
| } | |
| export function findConfigPath( | |
| dir: string, | |
| key: string | |
| ): Promise<string | undefined> { | |
| // If we didn't find the configuration in `package.json`, we should look for | |
| // known filenames. | |
| return findUp( | |
| [ | |
| `.${key}rc.json`, | |
| `${key}.config.json`, | |
| `.${key}rc.js`, | |
| `${key}.config.js`, | |
| `${key}.config.mjs`, | |
| `${key}.config.cjs`, | |
| ], | |
| { | |
| cwd: dir, | |
| } | |
| ) | |
| } | |
| // We'll allow configuration to be typed, but we force everything provided to | |
| // become optional. We do not perform any schema validation. We should maybe | |
| // force all the types to be `unknown` as well. | |
| export async function findConfig<T>( | |
| directory: string, | |
| key: string, | |
| _returnFile?: boolean | |
| ): Promise<RecursivePartial<T> | null> { | |
| // `package.json` configuration always wins. Let's check that first. | |
| const packageJsonPath = await findUp('package.json', { cwd: directory }) | |
| let isESM = false | |
| if (packageJsonPath) { | |
| try { | |
| const packageJsonStr = await readFile(packageJsonPath, 'utf8') | |
| const packageJson = JSON.parse(packageJsonStr) as { | |
| [key: string]: string | |
| } | |
| if (typeof packageJson !== 'object') { | |
| throw new Error() // Stop processing and continue | |
| } | |
| if (packageJson.type === 'module') { | |
| isESM = true | |
| } | |
| if (packageJson[key] != null && typeof packageJson[key] === 'object') { | |
| return packageJson[key] | |
| } | |
| } catch { | |
| // Ignore error and continue | |
| } | |
| } | |
| const filePath = await findConfigPath(directory, key) | |
| const esmImport = (path: string) => { | |
| // Skip mapping to absolute url with pathToFileURL on windows if it's jest | |
| // https://github.com/nodejs/node/issues/31710#issuecomment-587345749 | |
| if (process.platform === 'win32' && !process.env.JEST_WORKER_ID) { | |
| // on windows import("C:\\path\\to\\file") is not valid, so we need to | |
| // use file:// URLs | |
| return import(pathToFileURL(path).toString()) | |
| } else { | |
| return import(path) | |
| } | |
| } | |
| if (filePath) { | |
| if (filePath.endsWith('.js')) { | |
| if (isESM) { | |
| return (await esmImport(filePath)).default | |
| } else { | |
| return require(filePath) | |
| } | |
| } else if (filePath.endsWith('.mjs')) { | |
| return (await esmImport(filePath)).default | |
| } else if (filePath.endsWith('.cjs')) { | |
| return require(filePath) | |
| } | |
| // We load JSON contents with JSON5 to allow users to comment in their | |
| // configuration file. This pattern was popularized by TypeScript. | |
| const fileContents = await readFile(filePath, 'utf8') | |
| return JSON5.parse(fileContents) | |
| } | |
| return null | |
| } | |