Test whether all properties (own and inherited) of an object pass a test implemented by a predicate function.

Create and verify HMAC's for JSON objects.

Test for deep equality between two values.

Test whether an object contains a nested key path.

Test whether an object contains a nested key path, either own or inherited.

Test if a value is a BigInt.

Define (and/or modify) object properties.

Detect `Object.defineProperties` support.

Detect `Object.defineProperty` support.

Test if a value is a generator object.

Test if a value is iterable-like.

Return an array of an object's own symbol properties.

Return an array of an object's own enumerable and non-enumerable property names.

Return an object's own property descriptors.

Return a property descriptor for an object's own property.

Return a partial object copy excluding specified keys.

Merge and extend objects.

Return an array of an object's own enumerable property names.

Convert a collection to an object whose keys are determined by a provided function and whose values are the collection values.

Convert a collection to an object whose keys are determined by a provided function and whose values are the collection values, iterating from right to left.