invokeArgs.js

import { curryN, path, apply, init, bind } from 'ramda';

import isNotFunction from './isNotFunction';
import isEmptyArray from './isEmptyArray';

/**
 * Invokes the method at path of object with given arguments.
 *
 * @func invokeArgs
 * @memberOf RA
 * @since {@link https://char0n.github.io/ramda-adjunct/2.27.0|v2.27.0}
 * @category Object
 * @sig Array -> Array -> Object -> *
 * @param {Array.<string|number>} path The path of the method to invoke
 * @param {Array} args The arguments to invoke the method with
 * @param {Object} obj The object to query
 * @return {*}
 * @example
 *
 * RA.invokeArgs(['abs'], [-1], Math); //=> 1
 * RA.invokeArgs(['path', 'to', 'non-existent', 'method'], [-1], Math); //=> undefined
 */

const invokeArgs = curryN(3, (mpath, args, obj) => {
  const method = path(mpath, obj);
  const context = path(init(mpath), obj);

  if (isNotFunction(method)) return undefined;
  if (isEmptyArray(mpath)) return undefined;

  const boundMethod = bind(method, context);

  return apply(boundMethod, args);
});

export default invokeArgs;