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/** | |
* Composes single-argument functions from right to left. The rightmost | |
* function can take multiple arguments as it provides the signature for | |
* the resulting composite function. | |
* | |
* @param {...Function} funcs The functions to compose. | |
* @returns {Function} A function obtained by composing the argument functions | |
* from right to left. For example, compose(f, g, h) is identical to doing | |
* (...args) => f(g(h(...args))). | |
*/ | |
export default function compose(...funcs) { | |
if (funcs.length === 0) { | |
return arg => arg | |
} | |
if (funcs.length === 1) { | |
return funcs[0] | |
} | |
return funcs.reduce((a, b) => (...args) => a(b(...args))) | |
} |
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