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Last change
on this file was d24f17c, checked in by Aleksandar Panovski <apano77@…>, 15 months ago |
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| [d24f17c] | 1 | import { pathSatisfies } from 'ramda';
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| 2 |
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| 3 | import isFunction from './isFunction';
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| 4 |
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| 5 | /**
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| 6 | * Checks if input value is a `thenable`.
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| 7 | * `thenable` is an object or function that defines a `then` method.
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| 8 | *
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| 9 | * @func isThenable
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| 10 | * @memberOf RA
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| 11 | * @since {@link https://char0n.github.io/ramda-adjunct/2.1.0|v2.1.0}
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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 RA.isPromise|isPromise}
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| 17 | * @example
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| 18 | *
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| 19 | * RA.isThenable(null); // => false
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| 20 | * RA.isThenable(undefined); // => false
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| 21 | * RA.isThenable([]); // => false
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| 22 | * RA.isThenable(Promise.resolve()); // => true
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| 23 | * RA.isThenable(Promise.reject()); // => true
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| 24 | * RA.isThenable({ then: () => 1 }); // => true
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| 25 | */
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| 26 | const isThenable = pathSatisfies(isFunction, ['then']);
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| 27 |
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| 28 | export default isThenable;
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