JScript runner as a duplex stream
npm install jscriptJScript runner: a duplex stream wrapper around cscript with optional JSON serialization for easy marshalling of data between Node.js and Windows Script Host.
  
Let's create a version.js: a JScript that reads the FileVersion of executables.
``js
var JSON = require('json3')
var fs = new ActiveXObject('Scripting.FileSystemObject')
while(!WScript.StdIn.AtEndOfStream) {
var file = JSON.parse(WScript.StdIn.ReadLine())
if (fs.FileExists(file.path)) {
file.version = fs.GetFileVersion(file.path)
}
WScript.StdOut.Write(JSON.stringify(file) + '\n')
}
`
Install this script's dependencies and create a bundle with jscriptify:
`bash`
npm install json3
npm install -g jscriptify
jscriptify version.js > bundle.js
Last but not least, an example.js:
`js
var jscript = require('jscript')
var path = require('path')
var duplex = jscript('bundle.js', { json: true })
duplex.on('data', function(file) {
console.log(file.version)
})
process.argv.slice(2).forEach(function (file) {
duplex.write({ path: path.resolve(file) })
})
duplex.end()
`
And run it with Node.js:
`bash
> node example one.exe two.exe
16.4.8
6.2.3
`
Note: avoid StdOut.WriteLine() because json-stream doesn't like CRLF.
- file: relative or absolute path to a JScript file.
Options:
- args (array): script arguments
- json (boolean): if true, wrap stream with JSON serialization
- debug (boolean): if true, pipe stderr to process.stderr;
- native: if false, don't escape WoW64 redirection (passed to windows-bin).
With npm do:
`
npm install jscript
- Drop support of Node 0.10 and 0.12, and 6 and 7
- Emit error on non-zero exit code;
- Remove wrap option. Use { json: true }` instead.
MIT © Vincent Weevers