action-debian-package/node_modules/ramda/es/compose.js
Dawid Dziurla 9308795b8b
update
2020-03-26 15:37:35 +01:00

34 lines
1.1 KiB
JavaScript

import pipe from "./pipe.js";
import reverse from "./reverse.js";
/**
* Performs right-to-left function composition. The last argument may have
* any arity; the remaining arguments must be unary.
*
* **Note:** The result of compose is not automatically curried.
*
* @func
* @memberOf R
* @since v0.1.0
* @category Function
* @sig ((y -> z), (x -> y), ..., (o -> p), ((a, b, ..., n) -> o)) -> ((a, b, ..., n) -> z)
* @param {...Function} ...functions The functions to compose
* @return {Function}
* @see R.pipe
* @example
*
* const classyGreeting = (firstName, lastName) => "The name's " + lastName + ", " + firstName + " " + lastName
* const yellGreeting = R.compose(R.toUpper, classyGreeting);
* yellGreeting('James', 'Bond'); //=> "THE NAME'S BOND, JAMES BOND"
*
* R.compose(Math.abs, R.add(1), R.multiply(2))(-4) //=> 7
*
* @symb R.compose(f, g, h)(a, b) = f(g(h(a, b)))
*/
export default function compose() {
if (arguments.length === 0) {
throw new Error('compose requires at least one argument');
}
return pipe.apply(this, reverse(arguments));
}