@rnx-kit/tools-language

@rnx-kit/tools-language

@rnx-kit/tools-language is a collection of supplemental JavaScript functions and types.

You can import the entire package, or, to save space, import individual categories:

import * from "@rnx-kit/tools-language";

import * from "@rnx-kit/tools-language/function";
import * from "@rnx-kit/tools-language/math";
import * from "@rnx-kit/tools-language/properties";

Category	Function	Description
array	addRange(to, from, start, end)	Add elements from one array to another, returning the resulting array.
array	isNonEmptyArray(array)	Returns whether the specified object is a non-empty array.
array	toIndex(array, offset)	Convert an array offset to an array index. An offset can be positive or negative, while an index is always positive.
function	tryInvoke(fn)	Invoke the given function, returning its result or a thrown error.
math	isApproximatelyEqual(f1, f2, tolerance)	Decide if two numbers, integer or decimal, are "approximately" equal. They're equal if they are close enough to be within the given tolerance.
properties	extendObject(obj, extendedProps)	Add properties to an object, changing it from its current type to an extended type.
properties	extendObjectArray(arr, extendedProps)	Add properties to each object in an array, changing the object from its current type to an extended type.
properties	hasProperty(obj, property)	Returns whether property exists in obj.
properties	keysOf(obj)	Returns the names of the enumerable string properties of an object. Equivalent to calling Object.keys(), but type safe.
properties	pickValue(obj, key, name)	Pick the value for property key from obj and return it in a new object. If name is given, use it in the new object, instead of key.
properties	pickValues(obj, keys, names)	Pick the value for each key property from obj and return each one in a new object. If names are given, use them in the new object, instead of keys.