types.js
A tiny type checking library written in JavaScript.
Usage
The library exposes different APIs for checking data types. Each of the APIs accept only one parameter and returns a boolean value.
isArray(value: any)
Checks if the provided value is an Array.
const Result = Types.isArray([]);isBoolean(value: any)
Checks if the provided value is a boolean.
const Result = Types.isBoolean(true);isFunction(value: any)
Checks if the provided value is a function.
const Result = Types.isFunction(() => undefined);isNumber(value: any)
Checks if the provided value is a number.
const Result = Types.isNumber(123);isObject(value: any)
Checks if the provided value is an object (including arrays).
const Result = Types.isObject({});isString(value: any)
Checks if the provided value is a string.
const Result = Types.isString(123);isSymbol(value: any)
Checks if the provided value is a symbol.
const Result = Types.isSymbol(Symbol(1));isUndefined(value: any)
Checks if the provided value is of type undefined.
const Result = Types.isUndefined(undefined);