whatsme

Library to process object types

1. Install

npm install whatsme

2. Usage

import whatsme from 'whatsme';

whatsme.isNumber(3); // true
whatsme.whats('Something') // 'string'

3. Development

npm run dev

This watches files and compiles them

4. Run tests

npm test

npm run dev should be running to watch and recompile files.

5. List of methods

• isNull(variable): checks if variable is null.
• isUndefined(variable): checks if variable is undefined.
• isSymbol(variable): checks if variable is a symbol.
• isString(variable): checks if variable is a string.
• isNumber(variable); checks if variable is a number.
• isNaN(variable): checks if variable is NaN (Not a Number).
• isArray(variable): checks if variable is an array.
• isTrue(variable): checks if variable equals true strictly.
• isFalse(variable): checks if variable equals false strictly.
• isRegExp(variable): checks if variable is a regular expression.
• isDate(variable): checks if variable is an instance of Date.
• isObject(variable): checks if variable is a plain object.
• isFunction(variable): checks if variable is a function.
• isNotNull(variable): checks if variable is not null.
• isDefined(variable): checks if variable is not undefined.
• isSomething(variable): checks if variable is defined (not null and not undefined).
• isBoolean(variable): checks if variable is a boolean (strictly true or false).
• isTruthy(variable): checks if variable is truhty (the opposite of falsy).
• isFalsy(variable): checks if variable is falsy: false, 0, '', undefined, null or NaN.
• isEmpty(variable): checks if variable is empty: falsy, or empty object ({}) or empty array ([]);
• isNotEmpty(variable): checks if variable is not empty. The opposite to isEmpty.
• whats(variable): returns a string with the type of the variable:
  • null
  • undefined
  • symbol
  • string
  • number
  • NaN
  • array
  • true
  • false
  • RegExp
  • Date
  • object
  • function