chore(project): add terser

Author: olavoparno

package-lock.json

@@ -33,6 +33,7 @@
   "scripts": {
     "test": "CI=true react-scripts test --env=jsdom || true",
     "test:watch": "react-scripts test --env=jsdom",
+    "prebuild": "rm -rf dist",
     "build": "rollup -c",
     "start": "rollup -c -w",
     "prepare": "npm run build",
@@ -70,6 +71,7 @@
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-plugin-peer-deps-external": "^2.2.3",
+    "rollup-plugin-terser": "^7.0.0",
     "rollup-plugin-typescript2": "^0.27.2",
     "standard-version": "^8.0.2",
     "typescript": "^3.9.7"

package.json

@@ -2,6 +2,7 @@ import typescript from 'rollup-plugin-typescript2';
 import commonjs from 'rollup-plugin-commonjs';
 import external from 'rollup-plugin-peer-deps-external';
 import resolve from 'rollup-plugin-node-resolve';
+import { terser } from 'rollup-plugin-terser';
 
 import pkg from './package.json';
 
@@ -29,5 +30,6 @@ export default {
       clean: true,
     }),
     commonjs(),
+    terser(),
   ],
 };

rollup.config.js

@@ -1,21 +1,21 @@
 import * as React from 'react';
 
 type TScriptLoader = {
-  onCreate?: (() => null) | undefined;
-  onLoad?: (() => null) | undefined;
-  onError?: ((e: any) => never) | undefined;
-  delayMs?: number | undefined;
-  htmlPart?: string | undefined;
+  onCreate?: () => null;
+  onLoad?: () => null;
+  onError?: (e: any) => never;
+  delayMs?: number;
+  htmlPart?: string;
   src: string;
-  otherProps?: Record<string, unknown> | undefined;
+  otherProps?: Record<string, unknown>;
 };
 
 type TAppendScript = {
   id: string;
   scriptText: string;
-  optionalCallback?: (() => null) | undefined;
+  optionalCallback?: () => null;
   htmlPart: string;
-  otherProps?: Record<string, unknown> | undefined;
+  otherProps?: Record<string, unknown>;
 };
 
 type TUseScript = {