feat: add 30 new helpers across number, type, array, string, object, date, node, observable#92
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- define runtimes for node and browser in package.json - update createBundleMetadata to read from runtimes field - enhance type extraction logic in buildWebsiteMetadata
- implement isNodeStream to check for Node.js streams - add property-based tests for isNodeStream - create example usage for isNodeStream
- implement isSharedArrayBuffer to check for SharedArrayBuffer instances - add examples for usage and testing
- implement isEven function to check for even integers - add examples for usage of isEven - create property-based and contract tests for isEven
- implement isOdd function to check for odd integers - add examples for usage of isOdd - create property-based and contract tests for isOdd
- implement isObservable to check RxJS observables - add examples for usage in isObservable.example.ts - create tests for isObservable in isObservable.spec.ts and isObservable.test.ts
- implement isArrayLike to check array-like values - add examples for usage and assertions - create property-based and contract tests for isArrayLike
- implement isAsyncGenerator to check async generator instances - add examples for usage and assertions - create tests for isAsyncGenerator functionality
- implement isAsyncGeneratorFunction to check async generator functions - add examples for usage in isAsyncGeneratorFunction.example.ts - create tests for isAsyncGeneratorFunction in isAsyncGeneratorFunction.spec.ts - add additional tests in isAsyncGeneratorFunction.test.ts
- implement isAsyncIterable to check async iterable protocol - add examples for async generators and custom async iterables - create tests for various cases including primitives and null
- implement isGenerator function to check for generator instances - add examples demonstrating usage of isGenerator - create property-based and contract tests for isGenerator
- implement isGeneratorFunction to check for generator functions - add examples for detecting generator functions - create property-based and contract tests for isGeneratorFunction
- implement isPromiseLike to check for thenable objects - add examples for usage of isPromiseLike - create tests for isPromiseLike functionality
- implement isPropertyKey to validate property keys - add examples for valid and invalid property keys - create property-based tests for isPropertyKey - add contract tests for isPropertyKey
- clarify current state and decision for isEmpty - outline planned helpers for array, string, and object - address open questions regarding implementation
…ples - implement isEmpty for arrays - implement isNonEmpty for arrays - add tests for both helpers - add examples for usage feat(object): ✨ add isEmpty and isNonEmpty helpers with tests and examples - implement isEmpty for objects - implement isNonEmpty for objects - add tests for both helpers - add examples for usage feat(string): ✨ add isEmpty and isNonEmpty helpers with tests and examples - implement isEmpty for strings - implement isNonEmpty for strings - add tests for both helpers - add examples for usage refactor(type): ♻️ deprecate monolithic isEmpty helper - suggest category-specific helpers instead
- implement isBlank to check for empty or whitespace-only strings - add property-based tests for isBlank - create unit tests for isBlank functionality
- implement isNotBlank to check for non-blank strings - add examples for usage - create property-based and contract tests
- implement select function for filtering and transforming arrays - add examples for usage in select.example.ts - create property-based tests in select.spec.ts - add unit tests in select.test.ts
- implement isValid function to check Date instances - add property-based and contract tests for isValid - remove outdated isValidDate tests and specs
- implement isNegative function to check for negative numbers - add property-based and contract tests for isNegative - remove isNegativeNumber tests and implementation
- clarify select() index semantics in JSDoc and spec (original index, not post-filter) - add explicit test for select() original-index behavior - fix dangling @see {@link isValidDate} in isTimestamp.ts → date/isValid - document Infinity/-Infinity in isPositive/isNegative examples Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- add eslint-disable unicorn/no-thenable comments in isPromiseLike tests and example - remove top-level node:stream import from isNodeStream.example.ts to fix build-website-metadata license lookup (node:stream is a built-in, not a package) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- add @babel/core to package.json and pnpm-lock.yaml - update babel dependencies to version 7.29.7
- implement extractNumber function to extract numbers from strings - add benchmarks for performance testing - create property-based tests for various scenarios - include unit tests for edge cases and sign handling
…ncies - implement caching for source file contents - add function to strip comments from source text
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
number/,type/,node/,observable/— iteration protocol (isGenerator,isAsyncGenerator,isAsyncIterable, …), general purpose (isPropertyKey,isPromiseLike,isArrayLike), Node.js (isNodeStream,isSharedArrayBuffer),isObservableisEmpty/isNonEmpty/isBlank/isNotBlankper category (array/,string/,object/) — replaces monolithictype/isEmpty(now@deprecated)array/select— filter + map in a single pass (Radashi-style); index passed to mapper is the original array index, documented explicitlytype/— removed state predicates:isNonEmptyArray,isNonEmptyStringdeleted;isNegativeNumber→number/isNegative,isPositiveNumber→number/isPositive;isValidDate→date/isValidAGENTS.md— new "Helper Placement" rule: type predicates →type/, state predicates → their own categorydocs/native-alternatives.json— addedisInfiniteand other helpers that map directly to native JSTest plan
npx vitest run --coverage→ 389 files, 3785 tests, 100% coverage (statements / branches / functions / lines)npx tsc --noEmit→ 0 errorsselect()index semantics documented and tested (original index, not post-filter)type/isTimestamp.ts@seereference updated todate/isValidisNegative(-Infinity)andisPositive(Infinity)documented in JSDoc examples🤖 Generated with Claude Code