npm
es-shims/Reflect.getPrototypeOf
An ES2015 mostly-spec-compliant `Reflect.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible.
MITSep 16, 2026 · metrics 2.10.0
All tags
Catalogue tag
#ecmascript
Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.
132 records
npm
inspect-js/is-map
Is this value a JS Map? This module works cross-realm/iframe, and despite %Symbol.toStringTag%.
MITSep 16, 2026 · metrics 2.10.0
npm
inspect-js/is-shared-array-buffer
Is this value a JS SharedArrayBuffer? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.
MITSep 16, 2026 · metrics 2.10.0
npm
inspect-js/is-weakmap
Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
MITSep 16, 2026 · metrics 2.10.0
npm
ljharb/define-data-property
Define a data property on an object. Will fall back to assignment in an engine without descriptors.
MITSep 16, 2026 · metrics 2.10.0
npm
syntax-tree/hast-util-to-estree
hast utility to transform to estree (JavaScript AST) JSX
MITSep 15, 2026 · metrics 2.10.0
npm
es-shims/es-object-atoms
ES Object-related atoms: Object, ToObject, RequireObjectCoercible
MITSep 13, 2026 · metrics 2.10.0
npm
inspect-js/is-data-view
Is this value a JS DataView? This module works cross-realm/iframe, does not depend on instanceof or mutable properties, and despite ES6 Symbol.toStringTag.
MITSep 16, 2026 · metrics 2.10.0
npm
es-shims/ArrayBuffer.prototype.slice
ES spec-compliant shim for ArrayBuffer.prototype.slice
MITSep 16, 2026 · metrics 2.10.0
npm
inspect-js/data-view-buffer
Get the ArrayBuffer out of a DataView, robustly.
MITSep 16, 2026 · metrics 2.10.0
npm
inspect-js/data-view-byte-length
Get the byteLength out of a DataView, robustly.
MITSep 16, 2026 · metrics 2.10.0
npm
inspect-js/data-view-byte-offset
Get the byteOffset out of a DataView, robustly.
MITSep 16, 2026 · metrics 2.10.0
npm
es-shims/Array.prototype.findLast
An ESnext spec-compliant `Array.prototype.findLast` shim/polyfill/replacement that works as far down as ES3.
MITOct 20, 2026 · metrics 2.10.0
npm
es-shims/Array.prototype.toSorted
An ESnext spec-compliant `Array.prototype.toSorted` shim/polyfill/replacement that works as far down as ES3.
MITOct 20, 2026 · metrics 2.10.0
npm
slorber/combine-promises
Like Promise.all(array) but with an object instead of an array.
MITSep 23, 2026 · metrics 2.10.0
npm
es-shims/Object.groupBy
An ESnext spec-compliant `Object.groupBy` shim/polyfill/replacement that works as far down as ES3.
MITOct 20, 2026 · metrics 2.10.0
npm
KooiInc/typeofAnything
Determine what the type of anything is (in ECMAScript)
GPL-3.0Sep 13, 2026 · metrics 2.10.0
npm
es-shims/Array.prototype.findLastIndex
An ESnext spec-compliant `Array.prototype.findLastIndex` shim/polyfill/replacement that works as far down as ES3.
MITSep 16, 2026 · metrics 2.10.0
npm
sindresorhus/object-assign
ES2015 Object.assign() ponyfill
MITSep 16, 2026 · metrics 2.10.0
npm
syntax-tree/estree-util-is-identifier-name
Check if something can be an ecmascript (javascript) identifier name
MITOct 20, 2026 · metrics 2.10.0
npm
Alwatr/alwatr
The Alwatr Developer Kit is a comprehensive ecosystem designed to facilitate your development process. It comprises a diverse range of tools and libraries, empowering you to construct robust applications with enhanced efficiency.
MPL-2.0Sep 17, 2026 · metrics 2.10.0
crates.io
DelSkayn/rquickjs
High level bindings to the quickjs javascript engine
MITSep 14, 2026 · metrics 2.10.0
npm · PyPI
jquery/esprima
ECMAScript parsing infrastructure for multipurpose analysis
BSD-2-ClauseSep 16, 2026 · metrics 2.10.0
npm
mathiasbynens/String.prototype.repeat
A robust & optimized ES3-compatible polyfill for the `String.prototype.repeat` method in ECMAScript 6.
MITOct 20, 2026 · metrics 2.10.0
npm
standard/eslint-config-standard
ESLint Config for JavaScript Standard Style
MITSep 17, 2026 · metrics 2.10.0
npm
estools/esrecurse
AST recursive visitor
Custom licenseSep 16, 2026 · metrics 2.10.0
npm
json5/json5
JSON5 — JSON for Humans
Custom licenseSep 16, 2026 · metrics 2.10.0
npm
mathiasbynens/regenerate
Generate JavaScript-compatible regular expressions based on a given set of Unicode symbols or code points.
MITSep 16, 2026 · metrics 2.10.0
npm
mysticatea/eslint-plugin-es
ESLint plugin about ECMAScript syntactic features.
MITSep 23, 2026 · metrics 2.10.0
npm
gkz/levn
Light ECMAScript (JavaScript) Value Notation - human written, concise, typed, flexible
MITSep 16, 2026 · metrics 2.10.0