That-is is a utility javascript library for type checking, the purpose of the project is to help with flexibility and code optimization.

> Installation

You can use the library using a latest version on github or via npm (the recommended way):

npm install @kivixeletric/that-is

> How to use

To use the library in your project is very simple, see the example below:

import is from '@kivixeletric/that-is'

// Number Type
is.number('0') // will return a False
is.number(0)   // will return a True

// String Type
is.string('boo') // will return a True
is.string(true)  // will return a False

But if you want to do multiple checks of the same type, see the example below:

is.number(1, '2')    // False
is.number(1, 2)      // True
is.number(1, '2', 3) // False
is.number(1, 2, 3)   // True

But some functions will not have multiple values, for example is.divisible and is.equal

> Type List

~ Logical Types

• type or a - (type, ...values) -> Checks if value is a selected type

• defined or def - (...values) -> Checks if value is defined (is also applied to Object types)

• typeEquals - (value1, value2) -> Checks if typeof value is equals a other typeof value

• equals - (value1, value2) -> Checks if value is equals a other value

~ Numeric Types

• decimal - (...values) -> Checks if value is decimal type

• bigint - (...values) -> Checks if value is bigint type

• divisible - (value, number) -> Checks if value is divisible with another number

• infinite - (...values) -> Checks if value is a infinite type

~ Object Types

• element or elem or node - (...values) -> Checks if value is node element type

• object or obj - (...values) -> Checks if value is object type

• array or arr - (...values) -> Checks if value is array type

~ Natural Types

• number, num or int - (...values) -> Checks if value is number type

• string or str - (...values) -> Checks if value is string type

• boolean or bool - (...values) -> Checks if value is boolean type

• function or fn - (...values) -> Checks if value is function type

• symbol - (...values) -> Checks if value is symbol type

~ Special Types

• regexp - (...values) -> Checks if value is RegExp type

> License

• This project is licensed under MIT License