update dependencies

Author: ivailop

gulpfile.js

@@ -22,7 +22,7 @@ gulp.task('jsdoc', shell.task([
   './node_modules/.bin/jsdoc -c ./doc-config.json'
 ]));
 
-gulp.task('lint', function () {
+gulp.task('lint', ()=> {
   return gulp.src(['./src/**/*.js'], ['./test/**/*.js'])
         .pipe(jshint())
         .pipe(jshint.reporter(jshintXMLReporter))
@@ -33,15 +33,15 @@ gulp.task('lint', function () {
         }));
 });
 
-gulp.task('pre-test', function () {
+gulp.task('pre-test', ()=> {
   return gulp.src(['./src/**/*.js'])
     // Covering files
     .pipe(istanbul())
     // Force `require` to return covered files
     .pipe(istanbul.hookRequire());
 });
 
-gulp.task('test', ['pre-test'], function () {
+gulp.task('test', gulp.series(['pre-test'], ()=> {
   return gulp.src('test/**/*.spec.js')
     .pipe(jasmine({
     	reporter: new reporters.JUnitXmlReporter({
@@ -54,9 +54,9 @@ gulp.task('test', ['pre-test'], function () {
     	dir: './test/reports/coverage',
     	reporters: ['clover']
     }));
-});
+}));
 
-gulp.task('jscs', function () {
+gulp.task('jscs', ()=> {
   return gulp.src(['src/**/*.js', 'test/**/*.js'])
      .pipe(jscs({
             esnext: false,
@@ -68,4 +68,4 @@ gulp.task('jscs', function () {
 });
 
 
-gulp.task('build', ['lint', 'jscs', 'test']);
+gulp.task('build', gulp.parallel(['lint', 'jscs', 'test']));

package.json

@@ -7,17 +7,18 @@
     "test": "test"
   },
   "devDependencies": {
-    "gulp": "^3.8.10",
-    "gulp-istanbul": "^0.10.4",
-    "gulp-jasmine": "^2.0.1",
-    "gulp-jscs": "^1.4.0",
+    "gulp": "^4.0.2",
+    "gulp-istanbul": "^1.1.3",
+    "gulp-jasmine": "^4.0.0",
+    "gulp-jscs": "^4.1.0",
     "gulp-jscs-custom": "^0.1.6",
-    "gulp-jshint": "^1.9.0",
+    "gulp-jshint": "^2.1.0",
     "gulp-jshint-xml-file-reporter": "^0.5.1",
-    "gulp-shell": "^0.2.11",
-    "jasmine-reporters": "~2.4.0",
+    "gulp-shell": "^0.8.0",
+    "jasmine-reporters": "~2.5.2",
     "jsdoc": "3.4.0",
-    "jshint-stylish": "^1.0.0"
+    "jshint": "^2.13.6",
+    "jshint-stylish": "^2.2.1"
   },
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"