ts-predicates

ts-predicates


$3

A collection of predicate functions and utilities for creating new predicate functions in TypeScript. JavaScript UMD and TypeScript declaration file will be generated when building the package.

$3

``
npm install ts-predicates
`

$3

`javascript
import {
isBoolean,
isNotBoolean,
isString,
isNotString,
isNumber,
isNotNumber,
isDefined,
isUndefined,
isNull,
isNotNull,
isObject,
isNotObject,
isPlainObject,
isNotPlainObject,
isArray,
isNotArray,
isEmptyArray,
isNonEmptyArray,
isFunction,
isNotFunction,
isTrue,
isFalse,
isTruthy,
isFalsy,
isDate,
isNotDate,
isRegExp,
isNotRegExp,
isSymbol,
isNotSymbol,
isEqual,
isNotEqual
} from 'ts-predicates';

// ...

isBoolean({}) // false
isNotBoolean({}) // true
isString('foo') // true
isNotString('foo') // false
isNumber(5) // true
isNotNumber('foo') // true
isDefined([]) // true
isUndefined({}) // false
isNull(null) // true
isNotNull(null) // false
isObject({}) // true
isNotObject({}) // false
isPlainObject(new Array()) // false
isNotPlainObject(new Date()) // true
isArray([]) // true
isNotArray([]) // false
isEmptyArray([]) // true
isNonEmptyArray([]) // false
isFunction(() => {}) // true
isNotFunction(() => {}) // false
isTrue(1) // false
isFalse(false) // true
isTruthy(1) // true
isFalsy(0) // true
isDate(new Date()) // true
isNotDate(new Date()) // false
isRegExp(new RegExp('')) // true
isNotRegExp(new RegExp('')) // false
isSymbol(Symbol()) // true
isNotSymbol(Symbol()) // false
isEqual(1)(1) // true
isNotEqual({a: 1})({}) // true
``