es5 — open-source software health

npm

90Excellenthealth index

Comprehensive TypeScript/JavaScript utility library with cross-environment support (Node.js, browser, web worker) providing helper functions, polyfills (ES5-ES2023), type checking utilities, and optimized implementations for better minification and code readability.

TypeScript★ 12↓ 6.2M/moAug 27, 2026

MITAug 27, 2026 · metrics 2.10.0

npm

90Excellenthealth index

terser/terser

🗜 JavaScript parser, mangler and compressor toolkit for ES6+

JavaScript★ 9,314↓ 306M/moAug 4, 2026

Custom licenseAug 4, 2026 · metrics 2.10.0

npm

90Excellenthealth index

zloirock/core-js

Standard Library

JavaScript★ 25.5K↓ 531M/moAug 4, 2026

MITAug 4, 2026 · metrics 2.10.0

npm

73Goodhealth index

ipregistry/ipregistry-javascript

Official Javascript Client for Ipregistry: a Non-Intrusive Solution for IP Geolocation and Threat Data.

TypeScript★ 17↓ 8,952/moJul 29, 2026

Apache-2.0Jul 29, 2026 · metrics 2.10.0

npm

67Goodhealth index

ljharb/es-abstract

ECMAScript spec abstract operations.

JavaScript★ 124↓ 372M/moAug 4, 2026

MITAug 4, 2026 · metrics 2.10.0

npm

65Goodhealth index

es-shims/String.prototype.trim

ES5 spec-compliant shim for String.prototype.trim

JavaScript★ 13↓ 317M/moAug 4, 2026

MITAug 4, 2026 · metrics 2.10.0

npm

65Goodhealth index

ljharb/es-to-primitive

ECMAScript "ToPrimitive" algorithm. Provides ES5 and ES6/ES2015 versions.

JavaScript★ 22↓ 312M/moAug 4, 2026

MITAug 4, 2026 · metrics 2.10.0

npm

53Moderatehealth index

mathiasbynens/regexpu-core

regexpu’s core functionality, i.e. `rewritePattern(pattern, flag, options)`, which enables rewriting regular expressions that make use of the ES6 `u` flag into equivalent ES5-compatible regular expression patterns.

JavaScript★ 81↓ 183M/moAug 4, 2026

MITAug 4, 2026 · metrics 2.10.0

npm

50Moderatehealth index