lib/pass.js
function SHAWriteStream(manifest, filename, output) {
  this.output = output;
  this.manifest = manifest;
  this.filename = filename;
  this.sha = Crypto.createHash("sha1");
  output.on("close", this.emit.bind(this, "close"));
  output.on("error", this.emit.bind(this, "error"));
}
function SHAWriteStream(manifest, filename, output) {
  this.output = output;
  this.manifest = manifest;
  this.filename = filename;
  this.sha = Crypto.createHash("sha1");
  output.on("close", this.emit.bind(this, "close"));
  output.on("error", this.emit.bind(this, "error"));
}
function SHAWriteStream ( manifest , filename , output ) { this . output = output ; this . manifest = manifest ; this . filename = filename ; this . sha = Crypto . createHash ( "sha1" ) ; output . on ( "close" , this . emit . bind ( this , "close" ) ) ; output . on ( "error" , this . emit . bind ( this , "error" ) ) ; }
A write stream that calculates SHA from the output and updates the manifest accordingly.  manifest - Manifest object filename - Filename (manifest property to set) output   - Pipe to this output stream
A write stream that calculates SHA from the output and updates the manifest accordingly . manifest - Manifest object filename - Filename ( manifest property to set ) output - Pipe to this output stream