javascript [node.js 8+]递归获取目录中的所有文件
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// Node 8+
// --------------------------------------------------------------
// No external dependencies
const { promisify } = require('util');
const { resolve } = require('path');
const fs = require('fs');
const readdir = promisify(fs.readdir);
const stat = promisify(fs.stat);
async function getFiles(dir) {
const subdirs = await readdir(dir);
const files = await Promise.all(subdirs.map(async (subdir) => {
const res = resolve(dir, subdir);
return (await stat(res)).isDirectory() ? getFiles(res) : res;
}));
return files.reduce((a, f) => a.concat(f), []);
}
// Usage
getFiles(__dirname)
.then(files => console.log(files))
.catch(e => console.error(e));
// Node 10.10+
// --------------------------------------------------------------
// Updated for node 10+ with even more whizbang:
const { resolve } = require('path');
const { readdir } = require('fs').promises;
async function getFiles(dir) {
const dirents = await readdir(dir, { withFileTypes: true });
const files = dirents.map((dirent) => {
const res = resolve(dir, dirent.name);
return dirent.isDirectory() ? getFiles(res) : res;
});
return Array.prototype.concat(...files);
}
// Note that starting with node 11.15.0 you can use
// `files.flat()` instead of `Array.prototype.concat(...files)`
// to flatten the array.
// Node 11+
// --------------------------------------------------------------
// The following version uses async iterators.
const { resolve } = require('path');
const { readdir } = require('fs').promises;
async function* getFiles(dir) {
const dirents = await readdir(dir, { withFileTypes: true });
for (const dirent of dirents) {
const res = resolve(dir, dirent.name);
if (dirent.isDirectory()) {
yield* getFiles(res);
} else {
yield res;
}
}
}
// Usage has changed because the return type is now an
// async iterator instead of a promise:
(async () => {
for await (const f of getFiles('.')) {
console.log(f);
}
})()
// I've written more about async iterators here:
// https://qwtel.com/posts/software/async-generators-in-the-wild/
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