require-node-protocol.md

require-node-protocol

Require Node.js built-in module imports to use the node: protocol prefix.

Rule Details

Property	Value
Type	suggestion
Fixable	Yes (code)
Recommended	warn
Strict	error

Rationale

Starting with Node.js 16, built-in modules can be imported using the node: protocol prefix (e.g., node:fs instead of fs). Using the protocol prefix makes it immediately clear that the import refers to a Node.js built-in module rather than a user-land package with the same name, improving readability and preventing potential name collisions.

Examples

✅ Correct

import fs from 'node:fs';
import path from 'node:path';
import { readFile } from 'node:fs/promises';
import os from 'node:os';
import { createServer } from 'node:http';

❌ Incorrect

import fs from 'fs';
import path from 'path';
import { readFile } from 'fs/promises';
import os from 'os';
import { createServer } from 'http';

Configuration

This rule has no options:

'zero-tolerance/require-node-protocol': 'error'