1'use strict';
2require('../common');
3const assert = require('assert');
4const { isBuiltin } = require('module');
5
6// Includes modules in lib/ (even deprecated ones)
7assert(isBuiltin('http'));
8assert(isBuiltin('sys'));
9assert(isBuiltin('node:fs'));
10assert(isBuiltin('node:test'));
11
12// Does not include internal modules
13assert(!isBuiltin('internal/errors'));
14assert(!isBuiltin('test'));
15assert(!isBuiltin(''));
16assert(!isBuiltin(undefined));
17