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Filename : pipeP.js

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import _arity from "./internal/_arity.js";
import _pipeP from "./internal/_pipeP.js";
import reduce from "./reduce.js";
import tail from "./tail.js";
/**
 * Performs left-to-right composition of one or more Promise-returning
 * functions. The first argument may have any arity; the remaining arguments
 * must be unary.
 *
 * @func
 * @memberOf R
 * @since v0.10.0
 * @category Function
 * @sig ((a -> Promise b), (b -> Promise c), ..., (y -> Promise z)) -> (a -> Promise z)
 * @param {...Function} functions
 * @return {Function}
 * @see R.composeP
 * @deprecated since v0.26.0
 * @example
 *
 *      //  followersForUser :: String -> Promise [User]
 *      const followersForUser = R.pipeP(db.getUserById, db.getFollowers);
 */

export default function pipeP() {
  if (arguments.length === 0) {
    throw new Error('pipeP requires at least one argument');
  }

  return _arity(arguments[0].length, reduce(_pipeP, arguments[0], tail(arguments)));
}