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on this file since d24f17c was d24f17c, checked in by Aleksandar Panovski <apano77@…>, 15 months ago |
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| 1 | import { complement } from 'ramda';
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| 2 |
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| 3 | import isTruthy from './isTruthy';
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| 4 |
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| 5 | /**
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| 6 | * A falsy value is a value that translates to false when evaluated in a Boolean context.
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| 7 | * Falsy values are `false`, `0`, `""`, `null`, `undefined`, and `NaN`.
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| 8 | *
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| 9 | * @func isFalsy
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| 10 | * @memberOf RA
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| 11 | * @since {@link https://char0n.github.io/ramda-adjunct/2.2.0|v2.2..0}
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| 12 | * @category Type
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| 13 | * @sig * -> Boolean
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| 14 | * @param {*} val The value to test
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| 15 | * @return {boolean}
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| 16 | * @see {@link https://developer.mozilla.org/en-US/docs/Glossary/Falsy|falsy}, {@link RA.isTruthy|isTruthy}
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| 17 | * @example
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| 18 | *
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| 19 | * RA.isFalsy(false); // => true
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| 20 | * RA.isFalsy(0); // => true
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| 21 | * RA.isFalsy(''); // => true
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| 22 | * RA.isFalsy(null); // => true
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| 23 | * RA.isFalsy(undefined); // => true
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| 24 | * RA.isFalsy(NaN); // => true
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| 25 | */
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| 26 | const isFalsy = complement(isTruthy);
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| 27 |
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| 28 | export default isFalsy;
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