chore: add watch script

gulpfile.js

@@ -32,6 +32,7 @@ const gulp = require('gulp');
 const clean = require('./scripts/clean');
 const lint = require('./scripts/lint');
 const build = require('./scripts/build');
+const watch = require('./scripts/watch');
 const test = require('./scripts/test');
 const release = require('./scripts/release');
 const changelog = require('./scripts/changelog');
@@ -44,6 +45,7 @@ module.exports = {
   'clean': clean,
   'lint': lint,
   'build': gulp.series(prebuild, build),
+  'watch': watch,
   'test': gulp.series(pretest, test.test),
   'tdd': gulp.series(pretest, test.tdd),
   'changelog': changelog,

package.json

@@ -7,6 +7,7 @@
     "lint": "gulp lint",
     "clean": "gulp clean",
     "build": "gulp build",
+    "watch": "gulp watch",
     "test": "gulp test",
     "tdd": "gulp tdd",
     "changelog": "gulp changelog",

scripts/watch/index.js

@@ -0,0 +1,34 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2020 Mickael Jeanroy
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+const path = require('path');
+const gulp = require('gulp');
+const build = require('../build');
+const config = require('../config');
+
+module.exports = function watch(done) {
+  gulp.watch(path.join(config.src, '**', '*.js'), build, () => (
+    done()
+  ));
+};