Repository Analysis

sindresorhus/type-fest

A collection of essential TypeScript types

0.6 Likely human-written View on GitHub

0.6

Adjusted Score

0.6

Raw Score

100%

Time Factor

2026-05-30

Last Push

17,170

Stars

TypeScript

Language

38,983

Lines of Code

448

Files

25

Pattern Hits

2026-05-31

Scan Date

Score History

Severity Breakdown

CRITICAL 0HIGH 0MEDIUM 0LOW 25

Pattern Findings

25 matches across 4 categories. Click a row to expand file-level details.

Over-Commented Block19 hits · 19 pts

Severity	File	Line	Snippet
LOW	source/merge-deep.d.ts	401	type Bar = {
LOW	source/pick-deep.d.ts	41	type NameConfig = PickDeep<Configuration, 'userConfig.name'>;
LOW	source/conditional-pick-deep.d.ts	81	// a: string;
LOW	source/simplify-deep.d.ts	41	type SimplifyDeepProperties = SimplifyDeep<Properties1 & Properties2>;
LOW	source/schema.d.ts	21	attendees: string[];
LOW	source/pick-index-signature.d.ts	21	[x: `embedded-${number}`]: string;
LOW	source/exclusify-union.d.ts	101	// b: number;
LOW	lint-rules/validate-jsdoc-codeblocks.test.js	701	type Bar = Simplify<Foo>;
LOW	lint-rules/validate-jsdoc-codeblocks.test.js	721	import type {AllExtend} from 'type-fest';
LOW	lint-rules/validate-jsdoc-codeblocks.test.js	841	// a: Pick<{
LOW	lint-rules/validate-jsdoc-codeblocks.test.js	861	//=> {a: {b: Pick<{c: Pick<{d: 1}, 'd'>}, 'c'>}}
LOW	lint-rules/validate-jsdoc-codeblocks.test.js	1361	// a: {
LOW	lint-rules/test-utils.js	141	```
LOW	lint-rules/test-utils.js	201	@example
LOW	lint-rules/test-utils.js	241	exportTypeAndOption('// Some comment', '/*\nSome JSDoc\n/');
LOW	test-d/set-parameter-type.ts	41	expectType<(a: string) => null>(test5);
LOW	test-d/keys-of-union.ts	81	type Test9<T extends object> = Assignability9<T, KeysOfUnion<T>>;
LOW	test-d/int-range.ts	21	// declare const negative: IntRange<-1, 1>;
LOW	test-d/simplify.ts	61	// id: string;

Hyper-Verbose Identifiers4 hits · 4 pts

Severity	File	Line	Snippet
LOW	source/all-union-fields.d.ts	49	function displayPetInfoWithAllUnionFields(petInfo: AllUnionFields<Cat \| Dog>) {
LOW	source/shared-union-fields.d.ts	48	function displayPetInfoWithSharedUnionFields(petInfo: SharedUnionFields<Cat \| Dog>) {
LOW	source/shared-union-fields-deep.d.ts	70	function displayPetInfoWithSharedUnionFieldsDeep(petInfo: SharedUnionFieldsDeep<Cat \| Dog>['info']) {
LOW	test-d/asyncify.ts	5	declare function getFooWithThisArgumentSync(this: Date, name: string): RegExp;

Fake / Example Data1 hit · 1 pts

Severity	File	Line	Snippet
LOW	readme.md	438	name: 'John Doe',

Overly Generic Function Names1 hit · 1 pts

Severity	File	Line	Snippet
LOW	source/async-return-type.d.ts	18	declare function doSomething(value: Value): void;