mirror of
https://github.com/zhigang1992/react-native.git
synced 2026-04-11 11:29:03 +08:00
4ab455b37d
Summary: If the packager is already watching `/path/to/MyProject`, and it finds symlinks inside `/path/to/MyProject/node_modules` that point to `/path/to/MyProject/path/to/somewhere/else`, there's no need to add the latter to the project roots. **Test Plan:** replicate an aforementioned project set-up, and verify that only `/path/to/MyProject` is a project root for the packager, while files in `/path/to/MyProject/path/to/somewhere/else` can still be imported so long as they're part of an npm-style package (e.g. `/path/to/MyProject/path/to/somewhere/else/package.json` exists). Closes https://github.com/facebook/react-native/pull/9819 Differential Revision: D3852591 Pulled By: mkonicek fbshipit-source-id: 558ab3f835ee3d2bf6174c31595e242992f75601
29 lines
1.1 KiB
JavaScript
29 lines
1.1 KiB
JavaScript
const path = require('path');
|
|
const fs = require('fs');
|
|
|
|
function isSubPathOfPath(parentPath, subPath) {
|
|
return !path.relative(parentPath, subPath).startsWith('..' + path.sep);
|
|
}
|
|
|
|
function isSubPathOfPaths(parentPaths, subPath) {
|
|
return parentPaths.some(parentPath => isSubPathOfPath(parentPath, subPath));
|
|
}
|
|
|
|
/**
|
|
* Find and resolve symlinks in `lookupFolder`, filtering out any
|
|
* paths that are subpaths of `existingSearchPaths`.
|
|
*/
|
|
module.exports = function findSymlinksPaths(lookupFolder, existingSearchPaths) {
|
|
const timeStart = Date.now();
|
|
const folders = fs.readdirSync(lookupFolder);
|
|
const resolvedSymlinks = folders.map(folder => path.resolve(lookupFolder, folder))
|
|
.filter(folderPath => fs.lstatSync(folderPath).isSymbolicLink())
|
|
.map(symlink => path.resolve(process.cwd(), fs.readlinkSync(symlink)))
|
|
.filter(symlinkPath => !isSubPathOfPaths(existingSearchPaths, symlinkPath));
|
|
const timeEnd = Date.now();
|
|
|
|
console.log(`Scanning ${folders.length} folders for symlinks in ${lookupFolder} (${timeEnd - timeStart}ms)`);
|
|
|
|
return resolvedSymlinks;
|
|
};
|