97 lines
2.9 KiB
JavaScript
97 lines
2.9 KiB
JavaScript
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import { readdir, opendir } from 'node:fs/promises'
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import path, { basename, dirname } from 'node:path';
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/**
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* Finds all dependencies that are sliced by the slicer.
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* this function will search find the list of dependencies that are sliced by the slicer.
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* in the dist folder, theres a folder of repos. in that, there is a folder for each dependency.
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* collate into a set and return it.
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* Eg.
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* dist/
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* └── align-text/
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* └── kind-of
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* └── longest
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*
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* it will return kind-of and longest as sliced deps.
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*/
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export async function findSlicedDeps(){
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/**
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* @type {Set<string>}
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*/
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const slicedDeps = new Set();
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const distPath = path.resolve('dist');
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for await(const p of walk(distPath)) {
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if(p.endsWith("package.json")) {slicedDeps.add(basename(dirname(p)))}
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else continue;
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}
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return slicedDeps;
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}
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/**
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* Given a list of deps, find the repos that have these
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* @param {string[]} dependencies
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*/
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export async function checkForParentDep(dependencies){
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// dep -> main
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const map = await getReverseDeps();
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const reposet = dependencies.flatMap(dep => (map.get(dep)??[]));
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const repos = new Set(reposet);
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return repos;
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}
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// for a given dep, find the list of main repo that has this dep. return map.
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async function getReverseDeps() {
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const x = new Map();
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const distPath = path.resolve('dist');
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for await(const p of walk(distPath)) {
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if (p.endsWith("package.json")) {
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const repo = basename(dirname(dirname(p)));
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const depName = basename(dirname(p));
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if (!x.has(depName)) {
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x.set(depName, []);
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}
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x.get(depName).push(repo);
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// console.log(p,repo, depName);
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}
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else continue;
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}
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return x;
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}
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export async function findSlicedDepsSoFar() {
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// return all folder names in the output directory.
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const distPath = path.resolve('output');
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const dirEntries = await readdir(distPath, { withFileTypes: true });
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const repos = dirEntries.filter(dirent => dirent.isDirectory()).map(dirent => dirent.name);
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return repos;
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}
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/**
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*
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* @param {string} repo
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*/
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export async function getDepsOfRepo(repo){
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const distPath = path.resolve('output', repo);
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const dirEntry = await readdir(distPath, { withFileTypes: true });
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const deps = dirEntry.filter(dirent => dirent.isFile()).map(dirent => dirent.name.replace('.bundle.cjs',''));
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return deps;
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}
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/**
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* FS walk primitive
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* Ref: https://gist.github.com/lovasoa/8691344
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* @param {string} dir
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* @returns {AsyncGenerator<string>}
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*/
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async function* walk(dir) {
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for await (const d of await opendir(dir)) {
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const entry = path.join(dir, d.name);
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if (d.isDirectory()) yield* walk(entry);
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else if (d.isFile()) yield entry;
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}
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}
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// checkForParentDep('thenify', 'glob-parent', 'terser', 'url-parse').then(console.log).catch(console.error);
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