Nero Punished Miscreants

    wassat

    2.3.0 • Public • Published

    wassat Build Status codecov.io

    (What's that?)

    Installation and Usage

    npm install wassat

    var wassat = require('wassat');

    API

    wassat(Object anything) -> String

    The main function accepts anything and returns a string. The result is an all-lowercase version of the basic JavaScript "class" of which the object is an instance. If it's an instance of something else (HTMLElement for example, or perhaps the Math object), it returns "object". Under the hood, wassat uses Object.prototype.toString. For null and undefined, wassat() uses strict equality.

    • wassat('abc') -> 'string'
    • wassat(123) -> 'number'
    • wassat(NaN) -> 'number'
    • wassat(true) -> 'boolean'
    • wassat({}) -> 'object'
    • wassat([]) -> 'array'
    • wassat(function(){}) -> 'function'
    • wassat(new Date()) -> 'date'
    • wassat(new RegExp()) -> 'regexp'
    • wassat(new Error()) -> 'error'
    • wassat((function(){return arguments})()) -> 'arguments'
    • wassat(document.querySelector('div')) -> 'object'
    • wassat(null) -> 'null'
    • wassat(undefined) -> 'undefined'

    .is methods

    There is a corresponding "is" method for each type, as follows:

    wassat.isString([Object anything]) -> Boolean

    true if wassat(anything) === 'string', else false

    wassat.isNumber([Object anything]) -> Boolean

    true if wassat(anything) === 'number', else false

    Note: Returns true for NaN

    wassat.isBoolean(Object anything) -> Boolean

    true if wassat(anything) === 'boolean', else false

    wassat.isArray(Object anything) -> Boolean

    true if wassat(anything) === 'array', else false

    wassat.isObject(Object anything) -> Boolean

    true if wassat(anything) === 'object', else false

    wassat.isFunction(Object anything) -> Boolean

    true if wassat(anything) === 'function', else false

    wassat.isDate(Object anything) -> Boolean

    true if wassat(anything) === 'date', else false

    wassat.isRegExp(Object anything) -> Boolean

    true if wassat(anything) === 'regexp', else false

    wassat.isError(Object anything) -> Boolean

    true if wassat(anything) === 'error', else false

    wassat.isArguments(Object anything) -> Boolean

    true if wassat(anything) === 'arguments', else false

    wassat.isNull(Object anything) -> Boolean

    true if wassat(anything) === 'null', else false

    wassat.isUndefined(Object anything) -> Boolean

    true if wassat(anything) === 'undefined', else false

    Other Methods

    wassat.isNil(Object anything) -> Boolean

    true if wassat(anything) === 'null' or wassat(anything) === 'undefined'

    wassat.isPrimitive(Object anything) -> Boolean

    true if anything is of a primitive type (string, number, boolean). Primitive types can't hold properties. Not yet tested with ES6 Symbols.

    wassat.isIt(Function ctor, Object anything) -> Boolean

    Uses instanceof to check if ctor's prototype is in anything's prototype chain. Performs a little check for primitives so it can handle those too (since "abc" instanceof String is false).

    wassat.isItExactly(Function ctor, Object anything) -> Boolean

    Compares the prototype of anything (via Object.getPrototypeOf) to the value of ctor.prototype to see if ctor is the constructor function of anything. Performs a little check for primitives so it can handle those too (since Object.getPrototypeOf("abc") throws).

    wassat.isAll(String type, Array iterable) -> Boolean

    For each item in iterable, returns false if wassat(item) isn't type. Else true.

    Keywords

    none

    Install

    npm i wassat

    DownloadsWeekly Downloads

    56

    Version

    2.3.0

    License

    MIT

    Last publish

    Collaborators

    • nickbottomley