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#polyfill

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.

64 records
Tagged “polyfill”Ranked by health index
npm
78Goodhealth index
zloirock/core-js
Standard Library
JavaScript★ 25.5K↓ 516M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
Packagist
73Goodhealth index
symfony/polyfill
PHP polyfills
PHP★ 2,810↓ 42K/moJul 18, 2026
MITJul 18, 2026 · metrics 1.13.0
npm
70Goodhealth index
Sec-ant/barcode-detector
A Barcode Detection API ponyfill/polyfill that uses ZXing-C++ WebAssembly under the hood.
TypeScript★ 226↓ 4.1M/moJul 20, 2026
MITJul 20, 2026 · metrics 1.13.0
Packagist
66Moderatehealth index
Yoast/PHPUnit-Polyfills
Set of polyfills for changed PHPUnit functionality to allow for creating PHPUnit cross-version compatible tests
PHP★ 186↓ 1.8M/moJul 21, 2026
BSD-3-ClauseJul 21, 2026 · metrics 1.13.0
npm
64Moderatehealth index
charpeni/react-native-url-polyfill
🔗A lightweight and trustworthy URL polyfill for React Native.
JavaScript · TypeScript★ 408↓ 12.3M/moJul 16, 2026
MITJul 16, 2026 · metrics 1.13.0
Packagist
62Moderatehealth index
PHPCompatibility/PHPCompatibilitySymfony
PHPCompatibility rulesets which can be included in projects using the Symfony polyfill libraries
PHP★ 8↓ 27.9K/moJul 21, 2026
LGPL-3.0Jul 21, 2026 · metrics 1.13.0
Packagist
61Moderatehealth index
PHPCompatibility/PHPCompatibilityParagonie
PHPCompatibility rulesets which can be included in projects using the Paragonie polyfill libraries
PHP★ 10↓ 1.4M/moJul 21, 2026
LGPL-3.0Jul 21, 2026 · metrics 1.13.0
npm
61Moderatehealth index
es-shims/String.prototype.trim
ES5 spec-compliant shim for String.prototype.trim
JavaScript★ 13↓ 308M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
60Moderatehealth index
es-shims/Function.prototype.name
ES6 spec-compliant Function.prototype.name sham.
JavaScript★ 12↓ 302M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
59Moderatehealth index
R1ck404/Nodepod
Node.js for inside the browser. An open-source, lightweight WebContainer alternative.
TypeScript★ 158↓ 6,174/moJul 23, 2026
Custom licenseJul 23, 2026 · metrics 1.13.0
npm
59Moderatehealth index
es-shims/String.prototype.trimEnd
ES2019 spec-compliant String.prototype.trimEnd shim
JavaScript★ 5↓ 312M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
NuGet
58Moderatehealth index
Tyrrrz/PolyShim
Collection of polyfills for projects targeting older versions of .NET
C#★ 74Jul 18, 2026
MITJul 18, 2026 · metrics 1.13.0
Packagist
58Moderatehealth index
nanasess/bcmath-polyfill
PHP 8.4 bcmath functions polyfill with fallback compatibility for environments without bcmath extension. Based on phpseclib/bcmath_compat with additional support for new PHP 8.4 bcmath functions.
PHP★ 0↓ 24.7K/moJul 17, 2026
MITJul 17, 2026 · metrics 1.13.0
Packagist
57Moderatehealth index
PHPCompatibility/PHPCompatibilityPasswordCompat
PHPCompatibility ruleset which can be included in projects using @ircmaxell's PasswordCompat polyfill library
PHP★ 9↓ 27.9K/moJul 21, 2026
LGPL-3.0Jul 21, 2026 · metrics 1.13.0
Packagist
56Moderatehealth index
WyriHaximus/php-msgpack
ext-msgpack polyfill using rybakit/msgpack
Makefile★ 1↓ 3,131/moJul 14, 2026
MITJul 14, 2026 · metrics 1.13.0
Packagist
55Moderatehealth index
php-ds/polyfill
Compatibility polyfill
PHP★ 410↓ 240.6K/moJul 17, 2026
MITJul 17, 2026 · metrics 1.13.0
npm
55Moderatehealth index
sanity-io/eventsource
No repository description published.
JavaScript · TypeScript★ 2↓ 4.3M/moJul 18, 2026
MITJul 18, 2026 · metrics 1.13.0
Packagist
55Moderatehealth index
symfony/polyfill-php83
Symfony polyfill backporting some PHP 8.3+ features to lower PHP versions
PHP★ 432↓ 13M/moJul 13, 2026
MITJul 13, 2026 · metrics 1.13.0
Packagist
55Moderatehealth index
symfony/polyfill-php84
Symfony polyfill backporting some PHP 8.4+ features to lower PHP versions
PHP★ 139↓ 12.5M/moJul 13, 2026
MITJul 13, 2026 · metrics 1.13.0
npm
54Moderatehealth index
inspect-js/has-symbols
Determine if the JS environment has Symbol support. Supports spec, or shams.
JavaScript★ 18↓ 645M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
54Moderatehealth index
ljharb/object.assign
ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim
JavaScript★ 106↓ 342M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
Packagist
54Moderatehealth index
symfony/polyfill-intl-grapheme
Symfony polyfill for intl's grapheme_* functions
PHP★ 1,738↓ 16.5M/moJul 13, 2026
MITJul 13, 2026 · metrics 1.13.0
Packagist
54Moderatehealth index
symfony/polyfill-mbstring
Symfony polyfill for the Mbstring extension
PHP★ 7,832↓ 18.6M/moJul 13, 2026
MITJul 13, 2026 · metrics 1.13.0
npm
53Moderatehealth index
es-shims/array-includes
Array.prototype.includes spec-compliant polyfill
JavaScript★ 43↓ 244M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
Packagist
53Moderatehealth index
paragonie/random_compat
PHP 5.x support for random_bytes() and random_int()
PHP★ 8,155↓ 10.9M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
52Moderatehealth index
es-shims/Array.prototype.flat
An ESnext spec-compliant `Array.prototype.flat` shim/polyfill/replacement that works as far down as ES3.
JavaScript★ 31↓ 247M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
52Moderatehealth index
es-shims/Array.prototype.flatMap
An ESnext spec-compliant `Array.prototype.flatMap` shim/polyfill/replacement that works as far down as ES3.
JavaScript★ 33↓ 255M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
Packagist
52Moderatehealth index
symfony/polyfill-php85
Symfony polyfill backporting some PHP 8.5+ features to lower PHP versions
PHP★ 51↓ 11.7M/moJul 13, 2026
MITJul 13, 2026 · metrics 1.13.0
npm
51Moderatehealth index
es-shims/Object.entries
ES2017 spec-compliant shim for Object.entries
JavaScript★ 59↓ 230M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0
npm
51Moderatehealth index
es-shims/Object.values
ES2017 spec-compliant shim for Object.values
JavaScript★ 73↓ 253M/moJul 22, 2026
MITJul 22, 2026 · metrics 1.13.0