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// Taken from: https://github.com/vitejs/vite/blob/1a76300cd16827f0640924fdc21747ce140c35fb/packages/vite/src/node/server/searchRoot.ts
// MIT license
// See https://github.com/vitejs/vite/blob/1a76300cd16827f0640924fdc21747ce140c35fb/LICENSE
import fs from 'node:fs';
import { dirname, join } from 'node:path';
// https://github.com/vitejs/vite/issues/2820#issuecomment-812495079
const ROOT_FILES = [
// '.git',
// https://pnpm.io/workspaces/
'pnpm-workspace.yaml',
// https://rushjs.io/pages/advanced/config_files/
// 'rush.json',
// https://nx.dev/latest/react/getting-started/nx-setup
// 'workspace.json',
// 'nx.json',
// https://github.com/lerna/lerna#lernajson
'lerna.json',
];
export function tryStatSync(file: string): fs.Stats | undefined {
try {
// The "throwIfNoEntry" is a performance optimization for cases where the file does not exist
return fs.statSync(file, { throwIfNoEntry: false });
} catch {
// Ignore errors
}
}
export function isFileReadable(filename: string): boolean {
if (!tryStatSync(filename)) {
return false;
}
try {
// Check if current process has read permission to the file
fs.accessSync(filename, fs.constants.R_OK);
return true;
} catch {
return false;
}
}
// npm: https://docs.npmjs.com/cli/v7/using-npm/workspaces#installing-workspaces
// yarn: https://classic.yarnpkg.com/en/docs/workspaces/#toc-how-to-use-it
function hasWorkspacePackageJSON(root: string): boolean {
const path = join(root, 'package.json');
if (!isFileReadable(path)) {
return false;
}
try {
const content = JSON.parse(fs.readFileSync(path, 'utf-8')) || {};
return !!content.workspaces;
} catch {
return false;
}
}
function hasRootFile(root: string): boolean {
return ROOT_FILES.some((file) => fs.existsSync(join(root, file)));
}
function hasPackageJSON(root: string) {
const path = join(root, 'package.json');
return fs.existsSync(path);
}
/**
* Search up for the nearest `package.json`
*/
export function searchForPackageRoot(current: string, root = current): string {
if (hasPackageJSON(current)) return current;
const dir = dirname(current);
// reach the fs root
if (!dir || dir === current) return root;
return searchForPackageRoot(dir, root);
}
/**
* Search up for the nearest workspace root
*/
export function searchForWorkspaceRoot(
current: string,
root = searchForPackageRoot(current),
): string {
if (hasRootFile(current)) return current;
if (hasWorkspacePackageJSON(current)) return current;
const dir = dirname(current);
// reach the fs root
if (!dir || dir === current) return root;
return searchForWorkspaceRoot(dir, root);
}
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