1287 packages found
An AST-based pattern checker for JavaScript.
Get and robustly cache all JS language-level intrinsics at first require time
ECMAScript 5 compatibility shims for legacy JavaScript engines
ES spec-like internal slots
ECMAScript parsing infrastructure for multipurpose analysis
JavaScript parser, mangler/compressor and beautifier toolkit
ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines
Is this value a JS SharedArrayBuffer?
Unbox a boxed JS primitive value.
An Esprima-compatible JavaScript parser built on Acorn
Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.
An ESnext spec-compliant `Array.prototype.toSorted` shim/polyfill/replacement that works as far down as ES3.
ES2015 `Object.assign()` ponyfill
JavaScript parser, mangler/compressor and beautifier toolkit for ES6+
Which kind of boxed JS primitive is this?
Gets the description of a Symbol. Handles `Symbol()` vs `Symbol('')` properly when possible.
regexpu’s core functionality (i.e. `rewritePattern(pattern, flag)`), capable of translating ES6 Unicode regular expressions to ES5.
- codegen
- desugaring
- ecmascript
- es5
- es6
- harmony
- javascript
- refactoring
- regex
- regexp
- regular expressions
- rewriting
- syntax
- transformation
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ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.
- primitive
- abstract
- ecmascript
- es5
- es6
- es2015
- toPrimitive
- coerce
- type
- object
- string
- number
- boolean
- symbol
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`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.