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chain.js
module.exports = chain var bindActor = require("./bind-actor.js") chain.first = {} ; chain.last = {} function chain (things, cb) { var res = [] ;(function LOOP (i, len) { if (i >= len) return cb(null,res) if (Array.isArray(things[i])) things[i] = bindActor.apply(null, things[i].map(function(i){ return (i===chain.first) ? res[0] : (i===chain.last) ? res[res.length - 1] : i })) if (!things[i]) return LOOP(i + 1, len) things[i](function (er, data) { if (er) return cb(er, res) if (data !== undefined) res = res.concat(data) LOOP(i + 1, len) }) })(0, things.length) }
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