Make separate rollup config files for different builds

config/rollup.config.dev.js

@@ -0,0 +1,46 @@
+/* eslint-disable no-console */
+import commonjs from '@rollup/plugin-commonjs';
+import includePaths from 'rollup-plugin-includepaths';
+import json from '@rollup/plugin-json';
+import nodeResolve from '@rollup/plugin-node-resolve';
+
+
+// The "dev" build includes all modules in a single bundle - for now
+// * Skips transpilation (so it includes ES6 code and must run in a modern browser)
+// * Also generates sourcemaps
+
+export default {
+  input: './modules/id.js',
+  onwarn: onWarn,
+  output: {
+    file: 'dist/iD.js',
+    format: 'iife',
+    sourcemap: true,
+    strict: false
+  },
+  plugins: [
+    includePaths({
+      paths: ['node_modules/d3/node_modules'],  // npm2 or windows
+      include: {
+        'martinez-polygon-clipping': 'node_modules/martinez-polygon-clipping/dist/martinez.umd.js'
+      }
+    }),
+    nodeResolve({
+      mainFields: ['module', 'main'],
+      browser: false,
+      dedupe: ['object-inspect']
+    }),
+    commonjs(),
+    json({ indent: '' })
+  ]
+};
+
+function onWarn(warning, warn) {
+  // skip certain warnings
+  if (warning.code === 'CIRCULAR_DEPENDENCY') return;
+  if (warning.code === 'EVAL') return;
+
+  // Use default for everything else
+  console.log(warning.code);
+  warn(warning);
+}

config/rollup.config.legacy.js

@@ -5,6 +5,11 @@ import includePaths from 'rollup-plugin-includepaths';
 import json from '@rollup/plugin-json';
 import nodeResolve from '@rollup/plugin-node-resolve';
 
+
+// The "legacy" build includes all modules in a single bundle:
+// * Runs `buble` to transpile ES6 -> ES5 (needed for IE11 and PhantomJS)
+// * No sourcemaps
+
 export default {
   input: './modules/id.js',
   onwarn: onWarn,

config/rollup.config.stats.js

@@ -0,0 +1,50 @@
+/* eslint-disable no-console */
+import commonjs from '@rollup/plugin-commonjs';
+import includePaths from 'rollup-plugin-includepaths';
+import json from '@rollup/plugin-json';
+import nodeResolve from '@rollup/plugin-node-resolve';
+import visualizer from 'rollup-plugin-visualizer';
+
+
+// The "stats" build is just like the "dev" build,
+// but it includes the visualizer plugin to generate a statistics page (slow)
+
+export default {
+  input: './modules/id.js',
+  onwarn: onWarn,
+  output: {
+    file: 'dist/iD.js',
+    format: 'iife',
+    sourcemap: true,
+    strict: false
+  },
+  plugins: [
+    includePaths({
+      paths: ['node_modules/d3/node_modules'],  // npm2 or windows
+      include: {
+        'martinez-polygon-clipping': 'node_modules/martinez-polygon-clipping/dist/martinez.umd.js'
+      }
+    }),
+    nodeResolve({
+      mainFields: ['module', 'main'],
+      browser: false,
+      dedupe: ['object-inspect']
+    }),
+    commonjs(),
+    json({ indent: '' }),
+    visualizer({
+      filename: 'docs/statistics.html',
+      sourcemap: true
+    })
+  ]
+};
+
+function onWarn(warning, warn) {
+  // skip certain warnings
+  if (warning.code === 'CIRCULAR_DEPENDENCY') return;
+  if (warning.code === 'EVAL') return;
+
+  // Use default for everything else
+  console.log(warning.code);
+  warn(warning);
+}

package.json

@@ -12,7 +12,10 @@
   "scripts": {
     "all": "npm-run-all -s clean build build:legacy dist",
     "build": "node --max-old-space-size=4096 build.js",
-    "build:legacy": "rollup --config rollup.config.legacy.js",
+    "build:all": "npm-run-all -s build:development",
+    "build:dev": "rollup --config config/rollup.config.dev.js",
+    "build:legacy": "rollup --config config/rollup.config.legacy.js",
+    "build:stats": "rollup --config config/rollup.config.stats.js",
     "clean": "shx rm -f dist/*.js dist/*.map dist/*.css dist/img/*.svg",
     "dist": "npm-run-all -p dist:**",
     "dist:mapillary": "shx mkdir -p dist/mapillary-js && shx cp -R node_modules/mapillary-js/dist/* dist/mapillary-js/",