Ramda Adjunct 4.0.0

isTruthy.js

  1. import { curryN } from 'ramda';
  3. /**
  4.  * In JavaScript, a `truthy` value is a value that is considered true
  5.  * when evaluated in a Boolean context. All values are truthy unless
  6.  * they are defined as falsy (i.e., except for `false`, `0`, `""`, `null`, `undefined`, and `NaN`).
  7.  *
  8.  * @func isTruthy
  9.  * @memberOf RA
  10.  * @since {@link https://char0n.github.io/ramda-adjunct/2.2.0|v2.2.0}
  11.  * @category Type
  12.  * @sig * -> Boolean
  13.  * @param {*} val The value to test
  14.  * @return {boolean}
  15.  * @see {@link https://developer.mozilla.org/en-US/docs/Glossary/Truthy|truthy}, {@link RA.isFalsy|isFalsy}
  16.  * @example
  17.  *
  18.  * RA.isTruthy({}); // => true
  19.  * RA.isTruthy([]); // => true
  20.  * RA.isTruthy(42); // => true
  21.  * RA.isTruthy(3.14); // => true
  22.  * RA.isTruthy('foo'); // => true
  23.  * RA.isTruthy(new Date()); // => true
  24.  * RA.isTruthy(Infinity); // => true
  25.  */
  26. const isTruthy = curryN(1, Boolean);
  28. export default isTruthy;