blob: 17b37114940b92350b5bb2c496f5eeec87c48d4f (
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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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