Adding possibility to define one script to run in watch mode

.gitignore

@@ -28,4 +28,7 @@ Temporary Items
 node_modules
 
 #vs vnext files
-.vs/
+.vs/
+#vs code files
+.vscode/
+.history/

README.md

@@ -23,9 +23,42 @@ your `"scripts"`:
 }
 ```
 
+Possibilty to watch for different tasks
+
+```javascript
+  {
+    "watch": 
+      {
+      "run_android": {
+        "patterns": [
+          "app"
+        ],
+        "extensions": "ts,html,scss",
+        "quiet": false
+      },
+      "run_ios": {
+        "patterns": [
+          "app"
+        ],
+        "extensions": "ts,html,scss",
+        "quiet": false
+      }
+    },
+    "scripts": {
+      "watch_android": "npm-watch run_android",
+      "watch_ios": "npm-watch run_ios",
+      "run_android": "tns run android --emulator",
+      "run_ios": "tns run ios --emulator"
+    }
+  }
+```
+
+
 The keys of the `"watch"` config should match the names of your `"scripts"`, and
 the values should be a glob pattern or array of glob patterns to watch.
 
+Also it is now possible to obtain a second parameter to define the script which should be run for watching and not watch all possible scripts at once.
+
 If you need to watch files with extensions other than those that `nodemon` watches [by default](https://github.com/remy/nodemon#specifying-extension-watch-list) (`.js`, `.coffee`, `.litcoffee`), you can set the value to an object with `patterns` and `extensions` keys. You can also add an `ignore` key (a list or a string) to ignore specific files. Finally, you can add a `quiet` flag to hide the script name in any output on stdout or stderr, or you can use the `inherit` flag to preserve the original's process stdout or stderr.
 > The `quiet` flag was changed from a `string` to a `boolean` in `0.1.5`. Backwards compatability will be kept for two patch versions.
 

cli.js

@@ -2,14 +2,17 @@
 'use strict';
 var path = require('path')
 
-var windows = process.platform === 'win32'
+    var windows = process.platform === 'win32'
 var pathVarName = (windows && !('PATH' in process.env)) ? 'Path' : 'PATH'
 
-process.env[pathVarName] += path.delimiter + path.join(__dirname, 'node_modules', '.bin')
+process.env[pathVarName] +=
+    path.delimiter +
+    path.join(__dirname, 'node_modules', '.bin')
 
-var watchPackage = require('./watch-package')
+        var watchPackage = require('./watch-package')
 
-var watcher = watchPackage(process.argv[2] || process.cwd(), process.exit)
+        var watcher = watchPackage(
+            process.argv[3] || process.cwd(), process.exit, process.argv[2])
 
 process.stdin.pipe(watcher)
 watcher.stdout.pipe(process.stdout)

watch-package.js

@@ -8,16 +8,24 @@ var through = require('through2')
 var npm = process.platform === 'win32' ? 'npm.cmd' : 'npm';
 var nodemon = process.platform === 'win32' ? 'nodemon.cmd' : 'nodemon';
 
-module.exports = function watchPackage(pkgDir, exit) {
+var pkgDir = '';
+var stdin = null;
+
+module.exports = function watchPackage(_pkgDir, exit, taskName) {
+  pkgDir = _pkgDir;
   var pkg = require(path.join(pkgDir, 'package.json'))
   var processes = {}
 
+  if (typeof taskName !== 'undefined' && taskName === '') {
+    console.info('No Task specified. Will go trough all possible tasks');
+  }
+
   if (typeof pkg.watch !== 'object') {
     die('No "watch" config in package.json')
   }
 
   // send 'rs' commands to the right proc
-  var stdin = through(function (line, _, callback) {
+  stdin = through(function (line, _, callback) {
     line = line.toString()
     var match = line.match(/^rs\s+(\w+)/)
     if (!match) {
@@ -36,11 +44,47 @@ module.exports = function watchPackage(pkgDir, exit) {
   stdin.stderr = through()
   stdin.stdout = through()
 
+  if (typeof taskName !== 'undefined' && taskName !== '') {
+    if (!pkg.scripts[taskName]) {
+      die('No such script "' + taskName + '"', 2)
+    }
+    startScript(taskName, pkg, processes);
+  } else {
+
   Object.keys(pkg.watch).forEach(function (script) {
     if (!pkg.scripts[script]) {
       die('No such script "' + script + '"', 2)
     }
-    var exec = [npm, 'run', '-s', script].join(' ')
+    startScript(script, pkg, processes);
+  })
+  }
+
+  return stdin
+
+  function die(message, code) {
+    process.stderr.write(message)
+
+    if (stdin) {
+      stdin.end()
+      stdin.stderr.end()
+      stdin.stdout.end()
+    }
+    exit(code || 1)
+  }
+}
+
+function prefixer(prefix) {
+  return through(function (line, _, callback) {
+    line = line.toString()
+    if (!line.match('to restart at any time')) {
+      this.push(prefix + ' ' + line)
+    }
+    callback()
+  })
+}
+
+function startScript(script, pkg, processes) {
+  var exec = [npm, 'run', '-s', script].join(' ')
     var patterns = null
     var extensions = null
     var ignores = null
@@ -88,28 +132,4 @@ module.exports = function watchPackage(pkgDir, exit) {
       proc.stdout.pipe(prefixer('[' + script + ']')).pipe(stdin.stdout)
       proc.stderr.pipe(prefixer('[' + script + ']')).pipe(stdin.stderr)
     }
-  })
-
-  return stdin
-
-  function die(message, code) {
-    process.stderr.write(message)
-
-    if (stdin) {
-      stdin.end()
-      stdin.stderr.end()
-      stdin.stdout.end()
-    }
-    exit(code || 1)
-  }
-}
-
-function prefixer(prefix) {
-  return through(function (line, _, callback) {
-    line = line.toString()
-    if (!line.match('to restart at any time')) {
-      this.push(prefix + ' ' + line)
-    }
-    callback()
-  })
 }