Wrap a pull-stream, for pagination. This piece of logic lets you wrap the beginning and end of a stream, and also handle an empty stream. The intended use case is to render a stream to HTML while adding a "previous" hyperlink at the beginning, and a "next" hyperlink at the end, where those hyperlinks include information about the position of the stream at the first or last value respectively.
This module was factored out of git-ssb-web.
var paginate = require('pull-paginate')
paginate(onFirst, transform, onLast, onEmpty): through. wrap a stream for pagination.
onFirst(value, cb): given the first item in the source stream, callback a new item to prepend to the stream.
onLast(value, cb): given the last item in the source stream, callback a new item to append to the stream.
transform: through stream to transform the source values of the stream.
onEmpty(cb): given an empty stream, callback an item to add to the stream.
onEmptygets called if and only if
onLastare not called.
Copyright (c) 2016, 2017 Charles Lehner
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