Like a Set, but provides the index of the `key` in the backing array
Deep diffs two objects, including nested structures of arrays and objects, and return the difference.
Robustly get the byte offset of a Typed Array
ES2015-compliant shim for Object.is - differentiates between -0 and +0
Does this environment have the ability to get the [[Prototype]] of an object on creation with `__proto__`?
Make espower-lodaer config file unnecessary.
Complete implementation of RFC6902 (patch and diff)
Robustly get the byte length of a Typed Array
Is this value a JS Set? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
ECMAScript spec abstract operations.
TypeScript definitions for http-assert
Returns an array with only the unique values from the first array, by excluding all values from additional arrays using strict equality for comparisons.
Get and robustly cache all JS language-level intrinsics at first require time
Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Soft Asserts JSON, Array and other data
Robustly get an object's own property keys (strings and symbols), including non-enumerables when possible
Helper function for exhaustive checks of discriminated unions in TypeScript
Is this value a JS WeakSet? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.
TypeScript definitions for power-assert-formatter
parse SPDX license expressions
If available, the `Object.prototype.__proto__` accessor and mutator, call-bound
Store information about any JS value in a side channel. Uses WeakMap if available.
ES6 spec-compliant RegExp.prototype.flags shim.