node/test/module-hooks/test-module-hooks-load-buil...

30 lines
1003 B
JavaScript

import { mustCall } from '../common/index.mjs';
import assert from 'node:assert';
import { registerHooks } from 'node:module';
import process from 'node:process';
// This tests that imported builtins get null as source from default
// step, and the source returned are ignored.
// TODO(joyeecheung): this is to align with the module.register() behavior
// but perhaps the load hooks should not be invoked for builtins at all.
// Pick a builtin that's unlikely to be loaded already - like zlib.
assert(!process.moduleLoadList.includes('NativeModule zlib'));
const hook = registerHooks({
load: mustCall(function load(url, context, nextLoad) {
assert.strictEqual(url, 'node:zlib');
const result = nextLoad(url, context);
assert.strictEqual(result.source, null);
return {
source: 'throw new Error("I should not be thrown")',
format: 'builtin',
};
}),
});
const ns = await import('node:zlib');
assert.strictEqual(typeof ns.createGzip, 'function');
hook.deregister();