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

58 lines
1.9 KiB
JavaScript

import _curry1 from "./internal/_curry1.js";
import apply from "./apply.js";
import curryN from "./curryN.js";
import max from "./max.js";
import pluck from "./pluck.js";
import reduce from "./reduce.js";
import keys from "./keys.js";
import values from "./values.js"; // Use custom mapValues function to avoid issues with specs that include a "map" key and R.map
// delegating calls to .map
function mapValues(fn, obj) {
return keys(obj).reduce(function (acc, key) {
acc[key] = fn(obj[key]);
return acc;
}, {});
}
/**
* Given a spec object recursively mapping properties to functions, creates a
* function producing an object of the same structure, by mapping each property
* to the result of calling its associated function with the supplied arguments.
*
* @func
* @memberOf R
* @since v0.20.0
* @category Function
* @sig {k: ((a, b, ..., m) -> v)} -> ((a, b, ..., m) -> {k: v})
* @param {Object} spec an object recursively mapping properties to functions for
* producing the values for these properties.
* @return {Function} A function that returns an object of the same structure
* as `spec', with each property set to the value returned by calling its
* associated function with the supplied arguments.
* @see R.converge, R.juxt
* @example
*
* const getMetrics = R.applySpec({
* sum: R.add,
* nested: { mul: R.multiply }
* });
* getMetrics(2, 4); // => { sum: 6, nested: { mul: 8 } }
* @symb R.applySpec({ x: f, y: { z: g } })(a, b) = { x: f(a, b), y: { z: g(a, b) } }
*/
var applySpec =
/*#__PURE__*/
_curry1(function applySpec(spec) {
spec = mapValues(function (v) {
return typeof v == 'function' ? v : applySpec(v);
}, spec);
return curryN(reduce(max, 0, pluck('length', values(spec))), function () {
var args = arguments;
return mapValues(function (f) {
return apply(f, args);
}, spec);
});
});
export default applySpec;