Type checking and assertion functions for all types but NaN.

methods

var type = require('id-type');

type(a)

Returns a String with the type of a variable.

type.of(a)

Returns a String with the type of a variable.

type.is(t, a)

Returns true if the type of a is t, otherwise returns false.

type.isArray(a)

Returns true if the type of a is Array, otherwise returns false.

type.isBoolean(a)

Returns true if the type of a is Boolean, otherwise returns false.

type.isFunction(a)

Returns true if the type of a is Function, otherwise returns false.

type.isNull(a)

Returns true if the type of a is Null, otherwise returns false.

type.isNumber(a)

Returns true if the type of a is Number, otherwise returns false.

type.isObject(a)

Returns true if the type of a is Object, otherwise returns false.

type.isString(a)

Returns true if the type of a is String, otherwise returns false.

type.isUndefined(a)

Returns true if the type of a is Undefined, otherwise returns false.

type.assert(t, a)

Throws an AssertionError if the type of a is not t, otherwise returns undefined.

type.assertArray(a)

Throws an AssertionError if the type of a is not Array, otherwise returns undefined.

type.assertBoolean(a)

Throws an AssertionError if the type of a is not Boolean, otherwise returns undefined.

type.assertFunction(a)

Throws an AssertionError if the type of a is not Function, otherwise returns undefined.

type.assertNull(a)

Throws an AssertionError if the type of a is not Null, otherwise returns undefined.

type.assertNumber(a)

Throws an AssertionError if the type of a is not Number, otherwise returns undefined.

type.assertObject(a)

Throws an AssertionError if the type of a is not Object, otherwise returns undefined.

type.assertString(a)

Throws an AssertionError if the type of a is not String, otherwise returns undefined.

type.assertUndefined(a)

Throws an AssertionError if the type of a is not Undefined, otherwise returns undefined.