update to babel v8

gulpfile.js

@@ -1,6 +1,5 @@
 'use strict';
 
-const babelify = require("babelify")
 const browserify = require('browserify')
 const gulp = require('gulp')
 const source = require('vinyl-source-stream')
@@ -9,43 +8,41 @@ const rename = require('gulp-rename')
 const gutil = require('gulp-util')
 const sass = require('gulp-sass')
 const uglify = require('gulp-uglify')
-const pump = require('pump')
-const es = require('event-stream');
 const debug = process.env.NODE_ENV !== 'production';
-let defaultTasks = [ 'browserify', 'sass', 'html', 'img' ] ;
+let defaultTasks = [ 'app-js', 'tracker-js', 'sass', 'html', 'img' ] ;
+const babel = require('gulp-babel');
 
 gulp.task('default', defaultTasks);
 
-gulp.task('browserify', function () {
-  let files = [
-    './assets/src/js/script.js',
-    './assets/src/js/tracker.js',
-  ];
-
-  var tasks = files.map(function(entry) {
+gulp.task('app-js', function () {
     let stream = browserify({
-        entries: entry,
+        entries: './assets/src/js/script.js',
         debug: debug
     })
     .transform("babelify", {
-      presets: ["es2015"],
+      presets: ["@babel/preset-env"],
       plugins: [ 
-        "transform-decorators-legacy", 
-        ["transform-react-jsx", { "pragma":"h" } ] 
+        ["@babel/plugin-proposal-decorators", { "legacy": true }],
+        ["@babel/plugin-transform-react-jsx", { "pragma":"h" } ]
       ]
-    })
+    })    
     .bundle()  
-    .pipe(source(entry.split('/').pop()))
-
+    .pipe(source('script.js'))
+  
     if(!debug) {
       stream.pipe(buffer()).pipe(uglify())
     }    
 
     return stream.pipe(gulp.dest(`./assets/build/js`))  
-  });
+});  
 
-  // create a merged stream
-  return es.merge.apply(null, tasks);
+gulp.task('tracker-js', function () {
+  return gulp.src('./assets/src/js/tracker.js')
+        .pipe(babel({
+            presets: ["@babel/preset-env"],
+        }))
+        .pipe(uglify())
+        .pipe(gulp.dest('./assets/build/js'));
 });
 
 gulp.task('img', function() {
@@ -68,7 +65,7 @@ gulp.task('sass', function () {
 });
 
 gulp.task('watch', ['default'], function() {
-  gulp.watch(['./assets/src/js/**/*.js'], ['browserify'] );
+  gulp.watch(['./assets/src/js/**/*.js'], ['app-js', 'tracker-js'] );
   gulp.watch(['./assets/src/sass/**/**/*.scss'], ['sass'] );
   gulp.watch(['./assets/src/**/*.html'], ['html'] );
   gulp.watch(['./assets/src/img/**/*'], ['img'] );

package.json

@@ -5,30 +5,28 @@
     "url": "https://github.com/usefathom/fathom.git"
   },
   "devDependencies": {
-    "babel-core": "^6.26.0",
-    "babel-plugin-transform-decorators-legacy": "^1.3.4",
-    "babel-plugin-transform-react-jsx": "^6.8.0",
-    "babel-preset-es2015": "^6.18.0",
-    "babelify": "^8.0.0",
+    "@babel/core": "^7.0.1",
+    "@babel/plugin-proposal-decorators": "^7.0.0",
+    "@babel/plugin-transform-react-jsx": "^7.0.0",
+    "@babel/preset-env": "^7.0.0",
+    "babelify": "^10.0.0",
     "browserify": "^16.2.0",
-    "event-stream": "^3.3.4",
     "gulp": "^3.9.1",
+    "gulp-babel": "^8.0.0",
     "gulp-rename": "^1.2.2",
     "gulp-sass": "^4.0.1",
+    "gulp-uglify": "^3.0.0",
     "gulp-util": "^3.0.7",
     "node-sass": "^4.9.0",
     "vinyl-buffer": "^1.0.0",
     "vinyl-source-stream": "^2.0.0"
   },
   "dependencies": {
-    "cookies-js": "^1.2.3",
     "d3": "^5.4.0",
     "d3-tip": "^0.9.1",
     "d3-transition": "^1.1.1",
     "decko": "^1.2.0",
-    "gulp-uglify": "^3.0.0",
     "pikaday": "^1.7.0",
-    "preact": "^8.2.7",
-    "pump": "^3.0.0"
+    "preact": "^8.2.7"
   }
 }