feat: remove UMD build

Author: wuct

rollup.config.ts

@@ -1,20 +1,16 @@
-import resolve from 'rollup-plugin-node-resolve'
-import commonjs from 'rollup-plugin-commonjs'
-import sourceMaps from 'rollup-plugin-sourcemaps'
-import camelCase from 'lodash.camelcase'
-import typescript from 'rollup-plugin-typescript2'
-import json from 'rollup-plugin-json'
+import resolve from 'rollup-plugin-node-resolve';
+import commonjs from 'rollup-plugin-commonjs';
+import sourceMaps from 'rollup-plugin-sourcemaps';
+import typescript from 'rollup-plugin-typescript2';
+import json from 'rollup-plugin-json';
 
-const pkg = require('./package.json')
+const pkg = require('./package.json');
 
-const libraryName = 'elastic-apm-sourcemap-webpack-plugin'
+const libraryName = 'elastic-apm-sourcemap-webpack-plugin';
 
 export default {
   input: `src/${libraryName}.ts`,
-  output: [
-    { file: pkg.main, name: camelCase(libraryName), format: 'umd', sourcemap: true },
-    { file: pkg.module, format: 'es', sourcemap: true }
-  ],
+  output: [{ file: pkg.module, format: 'es', sourcemap: true }],
   // Indicate here external modules you don't wanna include in your bundle (i.e.: 'lodash')
   external: [],
   watch: {
@@ -35,4 +31,4 @@ export default {
     // Resolve source maps to the original source
     sourceMaps()
   ]
-}
+};