added a commonjs es5 bundle (#118)

Author: nmetulev

rollup.config.js

@@ -1,87 +1,115 @@
 import resolve from 'rollup-plugin-node-resolve';
 import babel from 'rollup-plugin-babel';
-import commonJS from "rollup-plugin-commonjs";
-import postcss from "rollup-plugin-postcss";
-import { terser } from "rollup-plugin-terser";
+import commonJS from 'rollup-plugin-commonjs';
+import postcss from 'rollup-plugin-postcss';
+import { terser } from 'rollup-plugin-terser';
 import json from 'rollup-plugin-json';
 
-const extensions = [".js", ".ts"];
+const extensions = ['.js', '.ts'];
 
 const commonPlugins = [
-    json(),
-    commonJS(),
-    resolve({ module: true, jsnext: true, extensions }),
-    postcss(),
-    terser({ keep_classnames: true, keep_fnames: true })
+  json(),
+  commonJS(),
+  resolve({ module: true, jsnext: true, extensions }),
+  postcss(),
+  terser({ keep_classnames: true, keep_fnames: true })
 ];
 
 const babelPlugins = [
-    [
-        "@babel/plugin-proposal-decorators",
-        { decoratorsBeforeExport: true, legacy: false }
-    ],
-    "@babel/proposal-class-properties",
-    "@babel/proposal-object-rest-spread"
+  ['@babel/plugin-proposal-decorators', { decoratorsBeforeExport: true, legacy: false }],
+  '@babel/proposal-class-properties',
+  '@babel/proposal-object-rest-spread'
 ];
 
 const babelInclude = [
-    "src/**/*",
-    "node_modules/lit-element/**/*",
-    "node_modules/lit-html/**/*",
-    "node_modules/@microsoft/microsoft-graph-client/lib/es/**/*",
-    "node_modules/msal/lib-es6/**/*"
+  'src/**/*',
+  'node_modules/lit-element/**/*',
+  'node_modules/lit-html/**/*',
+  'node_modules/@microsoft/microsoft-graph-client/lib/es/**/*',
+  'node_modules/msal/lib-es6/**/*'
 ];
 
 const es6Bundle = {
-	input: ['src/bundle/index.es6.ts'],
-	output: {
-        dir: 'dist/bundle',
-        entryFileNames: 'mgt.es6.js',
-        format: 'iife',
-        name: 'mgt',
-		sourcemap: false
-	},
-	plugins: [
-        babel({
-            extensions,
-            presets: [
-                [
-                    "@babel/preset-env", {
-                        "targets": ">25%"
-                    }
-                ], "@babel/typescript"
-            ],
-            plugins: babelPlugins,
-            include: babelInclude,
-        }),
-        ...commonPlugins
-    ]
-}
+  input: ['src/bundle/index.es6.ts'],
+  output: {
+    dir: 'dist/bundle',
+    entryFileNames: 'mgt.es6.js',
+    format: 'iife',
+    name: 'mgt',
+    sourcemap: false
+  },
+  plugins: [
+    babel({
+      extensions,
+      presets: [
+        [
+          '@babel/preset-env',
+          {
+            targets: '>25%'
+          }
+        ],
+        '@babel/typescript'
+      ],
+      plugins: babelPlugins,
+      include: babelInclude
+    }),
+    ...commonPlugins
+  ]
+};
 
 const es5Bundle = {
-	input: ['src/bundle/index.es5.ts'],
-	output: {
-        dir: 'dist/bundle',
-        entryFileNames: 'mgt.es5.js',
-        format: 'iife',
-        name: 'mgt',
-		sourcemap: false
-	},
-	plugins: [
-        babel({
-            extensions,
-            presets: [
-                [
-                    "@babel/preset-env", {
-                        "targets": "last 2 versions"
-                    }
-                ], "@babel/typescript"
-            ],
-            plugins: babelPlugins,
-            include: babelInclude,
-        }),
-        ...commonPlugins
-    ]
-}
+  input: ['src/bundle/index.es5.ts'],
+  output: {
+    dir: 'dist/bundle',
+    entryFileNames: 'mgt.es5.js',
+    format: 'iife',
+    name: 'mgt',
+    sourcemap: false
+  },
+  plugins: [
+    babel({
+      extensions,
+      presets: [
+        [
+          '@babel/preset-env',
+          {
+            targets: 'last 2 versions'
+          }
+        ],
+        '@babel/typescript'
+      ],
+      plugins: babelPlugins,
+      include: babelInclude
+    }),
+    ...commonPlugins
+  ]
+};
 
-export default [es6Bundle, es5Bundle];
+const cjsBundle = {
+  input: ['src/bundle/index.es5.ts'],
+  output: {
+    dir: 'dist/commonjs',
+    entryFileNames: 'index.js',
+    format: 'cjs',
+    sourcemap: true
+  },
+  plugins: [
+    babel({
+      extensions,
+      presets: [
+        [
+          '@babel/preset-env',
+          {
+            targets: 'last 2 versions'
+          }
+        ],
+        '@babel/typescript'
+      ],
+      plugins: babelPlugins,
+      include: babelInclude
+    }),
+    ...commonPlugins
+  ]
+};
+
+export default [es6Bundle, es5Bundle, cjsBundle];