in npm/cli/index.js [134:148]
function startWatchingSourceFiles() {
if(!watchingFiles) {
watchingFiles = true;
//Watch the SOURCE_DIR_NAME directory, recompile if anything changes
var pathToWatch = path.join(process.cwd(), SOURCE_DIR_NAME);
console.log('Watching the directory %s for changes...', pathToWatch);
watcher = chokidar.watch(pathToWatch)
.on('change',
function(path){
console.log('Change detected... %s', path);
compileDebug();
}
);
}
}