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Standard library
Does this environment have the ability to get the [[Prototype]] of an object on creation with `__proto__`?
Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.
Returns true if a value has the characteristics of a valid JavaScript data descriptor.
Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.
ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines
Standard library
Get, set, or delete a property from a nested object using a dot path
Is this value a JS Set? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Given some data, jsesc returns the shortest possible stringified & ASCII-safe representation of that data.
Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Is this value a JS WeakSet? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Iterator abstraction based on ES6 specification
Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.
Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Set nested properties on an object using dot notation.
- bury
- deep-get-set
- deep-object
- deep-property
- deep-set-in
- deep-set
- deephas
- dot-prop
- dot2val
- es5-dot-prop
- get
- getsetdeep
- has
- hasown
- View more
Set a function's name property
Array methods for ES6 Iterators
Set a function's length property
Create an array without duplicates