Skip to content

loader: require.resolve should throw for unknown builtin modules #43336

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
aduh95 merged 3 commits into from
Jun 17, 2022
Merged

loader: require.resolve should throw for unknown builtin modules #43336

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
21bfcaa
loader: make require.resolve throw error for unknown builtin modules
zhmushan Jun 7, 2022
9bbf815
Update lib/internal/modules/cjs/loader.js
zhmushan Jun 7, 2022
c65f329
Update test/parallel/test-require-resolve.js
zhmushan Jun 7, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
19 changes: 12 additions & 7 deletions lib/internal/modules/cjs/loader.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -780,19 +780,19 @@ Module._load = function(request, parent, isMain) {
}
}

const filename = Module._resolveFilename(request, parent, isMain);
if (StringPrototypeStartsWith(filename, 'node:')) {
Copy link
Copy Markdown
Contributor Author

@zhmushan zhmushan Jun 7, 2022

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Loading a builtin module prefixed with "node:" expects "ERR_UNKNOWN_BUILTIN_MODULE" to be thrown.
If the "resolve" function is called here, "MODULE_NOT_FOUND" will be thrown.

Copy link
Copy Markdown
Contributor

@aduh95 aduh95 Jun 7, 2022

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

ERR_UNKNOWN_BUILTIN_MODULE certainly makes more sense here than MODULE_NOT_FOUND, I agree (although I think both are fine).

if (StringPrototypeStartsWith(request, 'node:')) {
// Slice 'node:' prefix
const id = StringPrototypeSlice(filename, 5);
const id = StringPrototypeSlice(request, 5);

const module = loadNativeModule(id, request);
if (!module?.canBeRequiredByUsers) {
throw new ERR_UNKNOWN_BUILTIN_MODULE(filename);
throw new ERR_UNKNOWN_BUILTIN_MODULE(request);
}

return module.exports;
}

const filename = Module._resolveFilename(request, parent, isMain);
const cachedModule = Module._cache[filename];
if (cachedModule !== undefined) {
updateChildren(parent, cachedModule, true);
Expand Down Expand Up @@ -854,9 +854,14 @@ Module._load = function(request, parent, isMain) {
};

Module._resolveFilename = function(request, parent, isMain, options) {
if (StringPrototypeStartsWith(request, 'node:') ||
(NativeModule.canBeRequiredByUsers(request) &&
NativeModule.canBeRequiredWithoutScheme(request))) {
if ((
StringPrototypeStartsWith(request, 'node:') &&
NativeModule.canBeRequiredByUsers(StringPrototypeSlice(request, 5))
) ||
(
NativeModule.canBeRequiredByUsers(request) &&
NativeModule.canBeRequiredWithoutScheme(request)
)) {
Comment thread
zhmushan marked this conversation as resolved.
Outdated
return request;
}

Expand Down
13 changes: 13 additions & 0 deletions test/parallel/test-require-resolve.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -80,3 +80,16 @@ require(fixtures.path('resolve-paths', 'default', 'verify-paths.js'));
assert.strictEqual(resolvedPaths.includes('/node_modules'), false);
});
}

{
assert.strictEqual(require.resolve('node:test'), 'node:test');
assert.strictEqual(require.resolve('node:fs'), 'node:fs');

assert.throws(
() => require.resolve('node:unknown'),
{
code: 'MODULE_NOT_FOUND',
message: /^Cannot find module 'node:unknown'/,
Copy link
Copy Markdown
Contributor Author

@zhmushan zhmushan Jun 7, 2022

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Quote from the documentation:

If the module can not be found, a MODULE_NOT_FOUND error is thrown.

},
Comment thread
zhmushan marked this conversation as resolved.
Outdated
);
}