wPredicate library!

There is a simple library providing some common predicate

Get started

use "npm install --save wPredicate" to grasp the library

First use

import the function you need.

e.g import { isNull } from 'predicate';

below an exhaustive list of predicate provided.

Functions

Test on immutable types

isList isMap isRecord

Test on javascript types

isArray isObject isString isNumber isNull isEmpty isUndefined isArrayOrObject isNullOrUndefined isStringOrNumber isEmptyOrString

Creator of predicate for Record type

isSpecificRecord

this function is provided to create predicate on specific record type.

e.g const Action = Record({ type: null, point: null}) const isAction = isSpecificRecord(Action);

isSpecificRecord is curried so isAction is currently a function waiting for a parameter. the parameter is the value which needs to be tested.