Does this JS environment support the `name` property on functions?
Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.
UI for Vitest
Wraps a duplex stream and hides the readable or the writable interface
Helper package to shim a method into `Array.prototype[Symbol.unscopables]`
Tauri API definitions
Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
ES spec-like internal slots
ECMAScript spec-compliant polyfill/shim for `globalThis`
Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.
ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.
Determine if the JS environment has BigInt support.
ES5 spec-compliant shim for String.prototype.trim
Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag
Unbox a boxed JS primitive value.
Robustly `.call.bind()` a function
Determine if a function is a native async function.
An ES7/ES2016 spec-compliant `Array.prototype.includes` shim/polyfill/replacement that works as far down as ES3.
ES2017 spec-compliant Object.values shim.
Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Is this value negative zero? === will lie to you
consistent interface for
Clamping primitives for Vue.