// load module
var codeInjection = require('code-injection');
 
// create target read stream
var readStream = fs.createReadStream('test/html/test.html');
 
// @c
var id1 = new codeInjection('id1');
var id2 = new codeInjection('id2');
 
id1.inject('line1').inject('line2');
id2.inject('content1').inject('content2');
 
readStream.pipe(id1).pipe(id2).pipe(process.stdout);