Refactor

package.json

@@ -14,7 +14,8 @@
     "url": "http://badassjs.com/"
   },
   "scripts": {
-    "build": "rollup -c",
+    "build": "rimraf ./dist && rollup -c",
+    "watch": "npm run prebuild && rimraf ./dist && rollup -c -w",
     "prepublish": "npm run build",
     "prebuild": "node ./src/font/data/compressData.js",
     "postbuild": "rimraf ./src/font/data/*.b64.afm"
@@ -28,13 +29,15 @@
     "lz-string": "^1.4.4"
   },
   "devDependencies": {
+    "babel-core": "^6.26.3",
     "babel-plugin-external-helpers": "^6.22.0",
+    "babel-preset-env": "^1.7.0",
     "babel-preset-es2015": "^6.24.1",
     "blob-stream": "^0.1.2",
     "iconv-lite": "^0.4.13",
     "rimraf": "^2.6.2",
     "rollup": "^0.52.2",
-    "rollup-plugin-babel": "^2.7.1",
+    "rollup-plugin-babel": "3",
     "rollup-plugin-bundle-size": "https://github.com/vimeo/rollup-plugin-bundle-size",
     "rollup-plugin-ignore": "^1.0.3",
     "rollup-plugin-json": "^2.1.0",

rollup.config.js

@@ -1,12 +1,12 @@
-import babel from 'rollup-plugin-babel';
-import json from 'rollup-plugin-json';
-import nodeResolve from 'rollup-plugin-node-resolve';
-import bundleSize from 'rollup-plugin-bundle-size';
-import uglify from 'rollup-plugin-uglify';
-import string from 'rollup-plugin-string';
+import babel from 'rollup-plugin-babel'
+import json from 'rollup-plugin-json'
+import nodeResolve from 'rollup-plugin-node-resolve'
+import bundleSize from 'rollup-plugin-bundle-size'
+import uglify from 'rollup-plugin-uglify'
+import string from 'rollup-plugin-string'
 import replace from 'rollup-plugin-replace'
 import ignore from 'rollup-plugin-ignore'
-import pkg from './package.json';
+import pkg from './package.json'
 
 const cjs = {
   exports: 'named',
@@ -28,43 +28,42 @@ const configBase = {
     string({ include: '**/*.afm' }),
     babel({
       babelrc: false,
-      presets: [['es2015', { modules: false }]],
+      presets: [
+        [
+          'env',
+          {
+            modules: false,
+            targets: {
+              ie: '11'
+            }
+          }
+        ]
+      ],
       plugins: ['external-helpers'],
       runtimeHelpers: true
     }),
-    bundleSize(),
+    bundleSize()
   ],
   external: Object.keys(pkg.dependencies)
 }
 
 const serverConfig = Object.assign({}, configBase, {
-  output: [
-    getESM({ file: 'dist/pdfkit.es.js' }),
-    getCJS({ file: 'dist/pdfkit.cjs.js' }),
-  ],
+  output: [getESM({ file: 'dist/pdfkit.es.js' }), getCJS({ file: 'dist/pdfkit.cjs.js' })],
   plugins: configBase.plugins.concat(
     replace({
-      BROWSER: JSON.stringify(false),
+      BROWSER: JSON.stringify(false)
     })
   ),
   external: configBase.external.concat(['fs'])
 })
 
 const serverProdConfig = Object.assign({}, serverConfig, {
-  output: [
-    getESM({ file: 'dist/pdfkit.es.min.js' }),
-    getCJS({ file: 'dist/pdfkit.cjs.min.js' }),
-  ],
-  plugins: serverConfig.plugins.concat(
-    uglify()
-  ),
+  output: [getESM({ file: 'dist/pdfkit.es.min.js' }), getCJS({ file: 'dist/pdfkit.cjs.min.js' })],
+  plugins: serverConfig.plugins.concat(uglify())
 })
 
 const browserConfig = Object.assign({}, configBase, {
-  output: [
-    getESM({ file: 'dist/pdfkit.browser.es.js' }),
-    getCJS({ file: 'dist/pdfkit.browser.cjs.js' }),
-  ],
+  output: [getESM({ file: 'dist/pdfkit.browser.es.js' }), getCJS({ file: 'dist/pdfkit.browser.cjs.js' })],
   plugins: configBase.plugins.concat(
     replace({
       BROWSER: JSON.stringify(true)
@@ -74,18 +73,8 @@ const browserConfig = Object.assign({}, configBase, {
 })
 
 const browserProdConfig = Object.assign({}, browserConfig, {
-  output: [
-    getESM({ file: 'dist/pdfkit.browser.es.min.js' }),
-    getCJS({ file: 'dist/pdfkit.browser.cjs.min.js' }),
-  ],
-  plugins: browserConfig.plugins.concat(
-    uglify()
-  ),
+  output: [getESM({ file: 'dist/pdfkit.browser.es.min.js' }), getCJS({ file: 'dist/pdfkit.browser.cjs.min.js' })],
+  plugins: browserConfig.plugins.concat(uglify())
 })
 
-export default [
-  serverConfig,
-  serverProdConfig,
-  browserConfig,
-  browserProdConfig
-]
+export default [serverConfig, serverProdConfig, browserConfig, browserProdConfig]

src/abstract_reference.js

@@ -0,0 +1,11 @@
+/*
+PDFAbstractReference - abstract class for PDF reference
+*/
+
+class PDFAbstractReference {
+  toString() {
+    throw new Error('Must be implemented by subclasses')
+  }
+}
+
+export default PDFAbstractReference