echo "// before" | cat one.js two.js three.js > output.js
var Cat =
Returns a transform stream.
argv can be:
_: An array of arguments of file paths to concat; such as
cat one.js two.js three.js
fs: Override the file system with a node/io compatible fs.
u: Write bytes without buffering.
(c) 2015 Kyle Robinson Young. MIT License