Inspect objects as strings for debugging
string representations of objects in node and the browser
Determine if the JS environment has Symbol support. Supports spec, or shams.
Streaming data for JavaScript
super fast, all natural json logger
Determine if the current node version supports the `--preserve-symlinks` flag.
Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.
Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.
Path manipulation library for JavaScript
Does this JS environment support the `name` property on functions?
Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.
Is this value negative zero? === will lie to you
Is this specifier a node.js core module?
Returns an array of Typed Array names that are available in the current environment
Determine if a value is an ES6 Symbol or not.
Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.
Determine if a function is a native generator function.
Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.
Is this value a JS FinalizationRegistry? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Event emitters for JavaScript
Is this value a JS WeakRef? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Is this value an ES BigInt?