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x/ramda/source/prepend.js

:ram: Practical functional Javascript
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import _concat from './internal/_concat.js';import _curry2 from './internal/_curry2.js';

/** * Returns a new list with the given element at the front, followed by the * contents of the list. * * @func * @memberOf R * @since v0.1.0 * @category List * @sig a -> [a] -> [a] * @param {*} el The item to add to the head of the output list. * @param {Array} list The array to add to the tail of the output list. * @return {Array} A new array. * @see R.append * @example * * R.prepend('fee', ['fi', 'fo', 'fum']); //=> ['fee', 'fi', 'fo', 'fum'] */var prepend = _curry2(function prepend(el, list) { return _concat([el], list);});export default prepend;