ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.
Helper package to shim a method into `Array.prototype[Symbol.unscopables]`
Timers extensions
ES2019 spec-compliant String.prototype.trimStart shim.
ES2019 spec-compliant String.prototype.trimEnd shim.
ES5 spec-compliant shim for String.prototype.trim
ES6 spec-compliant RegExp.prototype.flags shim.
An ES2015 mostly-spec-compliant `Reflect.getPrototypeOf` sham/polyfill/replacement that works in as many engines as possible
Lodash exported as ES modules.
ES proposal-spec-compliant Object.fromEntries shim.
ES2017 spec-compliant Object.values shim.
ES Math-related intrinsics and helpers, robustly cached.
ES2017 spec-compliant Object.entries shim.
Lexes ES modules returning their import/export metadata
vary rewrite in TypeScript with ESM and CommonJS targets
ES spec-compliant shim for ArrayBuffer.prototype.slice
Replaces a file extension with another one.
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An ES-spec-compliant (proposed) Array.prototype.at shim/polyfill/replacement that works as far down as ES3
MCP Apps SDK — Enable MCP servers to display interactive user interfaces in conversational clients.
Gain more control over how ESLint fixes are applied.
Spec-compliant polyfill for String.prototype.matchAll
An ES2015 spec-compliant `Function.prototype.name` shim
TypedArray polyfill for old browsers