31 lines
949 B
JavaScript
31 lines
949 B
JavaScript
import _arity from "./internal/_arity.js";
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import _pipeP from "./internal/_pipeP.js";
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import reduce from "./reduce.js";
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import tail from "./tail.js";
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/**
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* Performs left-to-right composition of one or more Promise-returning
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* functions. The first argument may have any arity; the remaining arguments
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* must be unary.
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*
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* @func
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* @memberOf R
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* @since v0.10.0
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* @category Function
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* @sig ((a -> Promise b), (b -> Promise c), ..., (y -> Promise z)) -> (a -> Promise z)
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* @param {...Function} functions
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* @return {Function}
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* @see R.composeP
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* @deprecated since v0.26.0
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* @example
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*
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* // followersForUser :: String -> Promise [User]
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* const followersForUser = R.pipeP(db.getUserById, db.getFollowers);
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*/
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export default function pipeP() {
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if (arguments.length === 0) {
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throw new Error('pipeP requires at least one argument');
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}
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return _arity(arguments[0].length, reduce(_pipeP, arguments[0], tail(arguments)));
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} |