#polyfill

ES2019 spec-compliant String.prototype.trimEnd shim

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.

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Collection of polyfills for projects targeting older versions of .NET

PHPCompatibility ruleset which can be included in projects using @ircmaxell's PasswordCompat polyfill library

React component that scales content up or down and has it actually affect layout — CSS zoom semantics from transform: scale() in an explicitly sized wrapper, without WebKit's zoom font-metric bugs.

Compatibility polyfill

Symfony polyfill for intl's grapheme_* functions

Symfony polyfill for the Mbstring extension

Symfony polyfill backporting some PHP 8.3+ features to lower PHP versions

Symfony polyfill backporting some PHP 8.4+ features to lower PHP versions

Array.prototype.includes spec-compliant polyfill

Determine if the JS environment has Symbol support. Supports spec, or shams.

ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim

PHP 5.x support for random_bytes() and random_int()

An ESnext spec-compliant `Array.prototype.flat` shim/polyfill/replacement that works as far down as ES3.

An ESnext spec-compliant `Array.prototype.flatMap` shim/polyfill/replacement that works as far down as ES3.

Symfony polyfill for the deepclone extension

ES2017 spec-compliant shim for Object.entries

ES2017 spec-compliant shim for Object.values

ES6 spec-compliant RegExp.prototype.flags shim

Symfony polyfill for intl's Normalizer class and related functions

Symfony polyfill backporting some PHP 8.5+ features to lower PHP versions

Official ES spec-compliant polyfill for Object.fromEntries

ES2019 spec-compliant String.prototype.trimStart shim

Object.keys shim

High-resolution JavaScript timer based on performance.mark/measure (491 bytes min+gz)