fix: Use rollup-plugin-auto-external

package.json

@@ -19,18 +19,15 @@
     "docs:build": "typedoc ./src && touch ./docs/.nojekyll"
   },
   "dependencies": {
-    "@types/ws": "^7.4.7",
     "axios": "^0.21.1",
     "change-case": "^4.1.2",
     "eventemitter3": "^4.0.7",
+    "isomorphic-form-data": "^2.0.0",
     "isomorphic-ws": "^4.0.1",
     "normalize-url": "^7.0.1",
     "semver": "^7.3.5",
     "ws": "^8.2.1"
   },
-  "peerDependencies": {
-    "isomorphic-form-data": "^2.0.0"
-  },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^20.0.0",
     "@rollup/plugin-json": "^4.1.0",
@@ -39,6 +36,7 @@
     "@types/jest": "^27.0.1",
     "@types/node": "^16.7.10",
     "@types/semver": "^7.3.8",
+    "@types/ws": "^7.4.7",
     "@typescript-eslint/eslint-plugin": "^4.29.2",
     "@typescript-eslint/parser": "^4.30.0",
     "codecov": "^3.8.3",
@@ -48,7 +46,6 @@
     "eslint-plugin-import": "^2.24.2",
     "eslint-plugin-prettier": "^4.0.0",
     "eslint-plugin-simple-import-sort": "^7.0.0",
-    "isomorphic-form-data": "^2.0.0",
     "jest": "^27.1.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^2.3.2",

rollup.config.js

@@ -1,29 +1,10 @@
 import commonjs from '@rollup/plugin-commonjs';
 import json from '@rollup/plugin-json';
+import autoExternal from 'rollup-plugin-auto-external';
 import typescript from 'rollup-plugin-typescript2';
 
 import packageJSON from './package.json';
 
-const external = [
-  'asynckit',
-  'axios',
-  'change-case',
-  'combined-stream',
-  'eventemitter3',
-  'fs',
-  'form-data',
-  'http',
-  'https',
-  'isomorphic-ws',
-  'mime-types',
-  'normalize-url',
-  'path',
-  'querystring',
-  'semver',
-  'url',
-  'util',
-];
-
 export default [
   {
     input: './src/index.ts',
@@ -32,8 +13,7 @@ export default [
       format: 'cjs',
       exports: 'named',
     },
-    plugins: [commonjs(), json(), typescript()],
-    external,
+    plugins: [commonjs(), json(), typescript(), autoExternal()],
   },
   {
     input: './src/index.ts',
@@ -42,7 +22,6 @@ export default [
       format: 'esm',
       exports: 'named',
     },
-    plugins: [commonjs(), json(), typescript()],
-    external,
+    plugins: [commonjs(), json(), typescript(), autoExternal()],
   },
 ];

src/serializers/serializer-impl.ts

@@ -1,3 +1,5 @@
+import 'isomorphic-form-data';
+
 import { camelCase, snakeCase } from 'change-case';
 import { ParsedUrlQuery, stringify } from 'querystring';