pipe.js•980 B
var _arity = require('./internal/_arity');
var _pipe = require('./internal/_pipe');
var reduce = require('./reduce');
var tail = require('./tail');
/**
* Performs left-to-right function composition. The leftmost function may have
* any arity; the remaining functions must be unary.
*
* In some libraries this function is named `sequence`.
*
* **Note:** The result of pipe is not automatically curried.
*
* @func
* @memberOf R
* @since v0.1.0
* @category Function
* @sig (((a, b, ..., n) -> o), (o -> p), ..., (x -> y), (y -> z)) -> ((a, b, ..., n) -> z)
* @param {...Function} functions
* @return {Function}
* @see R.compose
* @example
*
* var f = R.pipe(Math.pow, R.negate, R.inc);
*
* f(3, 4); // -(3^4) + 1
*/
module.exports = function pipe() {
if (arguments.length === 0) {
throw new Error('pipe requires at least one argument');
}
return _arity(arguments[0].length,
reduce(_pipe, arguments[0], tail(arguments)));
};