ramda-extension/es/uniqTakeWhile.js

Helpful functions built on top of the mighty Ramda

import { uniq, takeWhile } from 'ramda';
import composeC from './composeC';
/**
 * Returns a new list containing the unique first n elements of a given list,
 * passing each value to the supplied predicate function,
 * and terminating when the predicate function returns false.
 * Excludes the element that caused the predicate function to fail.
 * The predicate function is passed one argument: (value).
 *
 * Acts as a transducer if a transformer is given in list position.
 *
 * @func
 * @category List
 *
 * @param {function} fn The function called per iteration.
 * @param {array} xs The collection to iterate over.
 *
 * @return {array} New array
 *
 * @example
 *
 *        R_uniqTakeWhile(x => x !== 4, [1, 2, 2, 1, 3, 4, 3, 2, 1]); // [1, 2, 3]
 *
 *
 * @sig (a -> Boolean) -> [a] -> [a]
 */

var uniqTakeWhile = /*#__PURE__*/composeC(uniq, takeWhile);
export default uniqTakeWhile;