Directory operations
Directories can be created, listed and inspected with fs.
In this page:
Syntax
fs.mkdir('directory', { recursive: true }, (err) => {});
fs.readdir('directory', (err, names) => {});
fs.readdir('directory', { withFileTypes: true }, (err, entries) => {});Directory operations
mkdir creates folders (recursive makes parents), readdir lists names, and withFileTypes tells files from folders. stat reveals size and type. Combining these builds tools like recursive directory walkers.
Note:
Use readdir with withFileTypes to avoid an extra stat per entry.
Example: Directory operations
const fs = require("fs");
fs.mkdirSync("proj/src", { recursive: true });
fs.writeFileSync("proj/readme.md", "# hi");
fs.writeFileSync("proj/src/app.js", "1");
const entries = fs.readdirSync("proj", { withFileTypes: true });
console.log(entries.map((e) => e.name + (e.isDirectory() ? "/" : "")).sort());
// Output:
// [ 'readme.md', 'src/' ]⚠️ Run this in your own terminal or Node.js environment.
Related Topics
Common Mistakes
- Forgetting recursive for nested folders
- Assuming readdir returns full paths
- Not handling EEXIST
Chapter Summary
- mkdir creates folders
- readdir lists names
- withFileTypes identifies entries
- stat gives details
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