83 lines
1.6 KiB
JavaScript
83 lines
1.6 KiB
JavaScript
// @flow
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import type {FilePath} from '@parcel/types';
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import type {FileSystem} from './types';
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import path from 'path';
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export function findNodeModule(
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fs: FileSystem,
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moduleName: string,
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dir: FilePath,
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): ?FilePath {
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let {root} = path.parse(dir);
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while (dir !== root) {
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// Skip node_modules directories
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if (path.basename(dir) === 'node_modules') {
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dir = path.dirname(dir);
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}
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try {
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let moduleDir = path.join(dir, 'node_modules', moduleName);
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let stats = fs.statSync(moduleDir);
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if (stats.isDirectory()) {
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return moduleDir;
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}
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} catch (err) {
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// ignore
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}
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// Move up a directory
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dir = path.dirname(dir);
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}
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return null;
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}
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export function findAncestorFile(
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fs: FileSystem,
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fileNames: Array<string>,
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dir: FilePath,
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root: FilePath,
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): ?FilePath {
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let {root: pathRoot} = path.parse(dir);
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// eslint-disable-next-line no-constant-condition
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while (true) {
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if (path.basename(dir) === 'node_modules') {
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return null;
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}
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for (const fileName of fileNames) {
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let filePath = path.join(dir, fileName);
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try {
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if (fs.statSync(filePath).isFile()) {
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return filePath;
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}
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} catch (err) {
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// ignore
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}
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}
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if (dir === root || dir === pathRoot) {
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break;
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}
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dir = path.dirname(dir);
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}
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return null;
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}
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export function findFirstFile(
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fs: FileSystem,
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filePaths: Array<FilePath>,
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): ?FilePath {
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for (let filePath of filePaths) {
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try {
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if (fs.statSync(filePath).isFile()) {
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return filePath;
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}
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} catch (err) {
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// ignore
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}
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}
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}
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