Add back old file for compatability

Author: fulldecent

package.json

@@ -8,7 +8,8 @@
     "sideEffects": [
         "./auto/auto.js",
         "./auto/auto.cjs",
-        "./dist/chart.umd.min.js"
+        "./dist/chart.umd.min.js",
+        "./dist/chart.umd.js"
     ],
     "jsdelivr": "./dist/chart.umd.min.js",
     "unpkg": "./dist/chart.umd.min.js",

rollup.config.js

@@ -58,6 +58,20 @@ export default [
     },
   },
 
+  // UMD build
+  // dist/chart.umd.js (old filename, deprecated)
+  {
+    input: 'src/index.umd.ts',
+    plugins: plugins(true),
+    output: {
+      name: 'Chart',
+      file: 'dist/chart.umd.js',
+      format: 'umd',
+      indent: false,
+      sourcemap: true,
+    },
+  },
+
   // ES6 builds
   // dist/chart.js
   // helpers/*.js