31 lines
949 B
JavaScript
31 lines
949 B
JavaScript
|
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)));
|
||
|
|
}
|