manual build via rollup

.eslintignore

@@ -0,0 +1 @@
+/dist

.prettierignore

@@ -0,0 +1 @@
+/dist

package.json

@@ -6,16 +6,16 @@
   "public": true,
   "author": "Lenz Weber",
   "main": "dist/index.js",
-  "module": "dist/rtk-query.esm.js",
+  "module": "dist/esm/index.js",
   "sideEffects": false,
-  "types": "dist/index.d.ts",
+  "types": "dist/ts/index.d.ts",
   "typesVersions": {
     ">=4.1": {
       "dist": [
-        "dist/min-4.1/index.d.ts"
+        "dist/ts-4.1/index.d.ts"
       ],
-      "dist/*": [
-        "dist/min-4.1/*"
+      "dist/ts/*": [
+        "dist/ts-4.1/*"
       ]
     }
   },
@@ -31,7 +31,7 @@
   },
   "scripts": {
     "start": "tsdx watch",
-    "build": "tsdx build && node typesversions.js",
+    "build": "rollup -c && node post-build.js",
     "test": "tsdx test",
     "lint": "tsdx lint",
     "prepare": "yarn build",
@@ -62,15 +62,43 @@
   },
   "size-limit": [
     {
-      "path": "dist/rtk-query.cjs.production.min.js",
-      "limit": "25 KB"
+      "name": "ESM full",
+      "path": "dist/esm/index.js",
+      "limit": "15 KB"
+    },
+    {
+      "name": "createPureApi + setupListeners",
+      "path": "dist/esm/index.js",
+      "import": "{ createPureApi, setupListeners }"
+    },
+    {
+      "name": "createApi + setupListeners",
+      "path": "dist/esm/index.js",
+      "import": "{ createApi, setupListeners }"
+    },
+    {
+      "name": "fetchBaseQuery",
+      "path": "dist/esm/index.js",
+      "import": "{ fetchBaseQuery }"
+    },
+    {
+      "name": "retry",
+      "path": "dist/esm/index.js",
+      "import": "{ retry }"
+    },
+    {
+      "name": "ApiProvider",
+      "path": "dist/esm/index.js",
+      "import": "{ ApiProvider }"
     },
     {
-      "path": "dist/rtk-query.esm.js",
+      "name": "CJS minfied",
+      "path": "dist/index.cjs.production.min.js",
       "limit": "25 KB"
     }
   ],
   "dependencies": {
+    "@babel/runtime": "^7.12.5",
     "immer": ">=8.0.0"
   },
   "peerDependencies": {
@@ -96,7 +124,11 @@
     }
   },
   "devDependencies": {
+    "@babel/plugin-transform-runtime": "^7.12.10",
     "@reduxjs/toolkit": "^1.5.0",
+    "@rollup/plugin-babel": "^5.2.2",
+    "@rollup/plugin-replace": "^2.3.4",
+    "@rollup/plugin-typescript": "^8.0.0",
     "@size-limit/preset-small-lib": "^4.6.0",
     "@testing-library/react": "^11.1.0",
     "@testing-library/react-hooks": "^3.4.2",
@@ -113,6 +145,8 @@
     "react-dom": "^16.14.0 || 17.0.0",
     "react-redux": "^7.2.1",
     "react-test-renderer": "^17.0.1",
+    "rollup": "^2.34.2",
+    "rollup-plugin-terser": "^7.0.2",
     "shelljs": "^0.8.4",
     "size-limit": "^4.6.0",
     "ts-node": "^9.0.0",

post-build.js

@@ -0,0 +1,29 @@
+const fs = require('fs');
+const { cp, rm } = require('shelljs');
+
+if (fs.existsSync('dist/ts-4.1')) {
+  rm('-r', 'dist/ts-4.1');
+}
+
+cp('-r', 'dist/ts/', 'dist/ts-4.1');
+
+const stubTs41Types = `
+import { EndpointDefinitions } from './endpointDefinitions';
+export declare type TS41Hooks<Definitions extends EndpointDefinitions> = unknown;
+export {};
+`;
+
+fs.writeFileSync('dist/ts/ts41Types.d.ts', stubTs41Types);
+
+fs.writeFileSync(
+  'dist/index.js',
+  `
+'use strict'
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./index.cjs.production.min.js')
+} else {
+  module.exports = require('./index.cjs.development.js')
+}
+`
+);

rollup.config.js

@@ -0,0 +1,99 @@
+import babel from '@rollup/plugin-babel';
+import typescript from '@rollup/plugin-typescript';
+import { terser } from 'rollup-plugin-terser';
+import replace from '@rollup/plugin-replace';
+
+/** @type {import("rollup").RollupOptions} */
+const defaultConfig = {
+  input: 'src/index.ts',
+  external: [/@babel\/runtime/, /@reduxjs\/toolkit/, /react$/, /react-redux/, /immer/, /tslib/],
+  treeshake: {
+    propertyReadSideEffects: false,
+  },
+};
+
+const defaultTerserOptions = {
+  output: { comments: false },
+  compress: {
+    keep_infinity: true,
+    pure_getters: true,
+    passes: 10,
+  },
+  ecma: 5,
+  warnings: true,
+};
+
+const defaultTsConfig = { declaration: false, declarationMap: false, target: 'ESNext', module: 'esnext' };
+
+/** @type {import("rollup").RollupOptions} */
+const configs = [
+  // ESM
+  {
+    ...defaultConfig,
+    output: [
+      {
+        dir: 'dist/esm',
+        format: 'es',
+        sourcemap: true,
+        preserveModules: true,
+      },
+    ],
+    plugins: [
+      typescript(defaultTsConfig),
+      babel({
+        exclude: 'node_modules/**',
+        extensions: ['.js', '.ts'],
+        babelHelpers: 'runtime',
+        presets: [
+          [
+            '@babel/preset-env',
+            {
+              targets: { node: true, browsers: ['defaults', 'not IE 11', 'maintained node versions'] },
+              bugfixes: true,
+              loose: true,
+            },
+          ],
+        ],
+        plugins: [['@babel/plugin-transform-runtime', { useESModules: true }]],
+      }),
+    ],
+  },
+  // CJS:
+  ...withMinify((minified) => ({
+    ...defaultConfig,
+    output: [
+      {
+        dir: 'dist',
+        format: 'cjs',
+        sourcemap: true,
+        entryFileNames: minified ? '[name].cjs.production.min.js' : '[name].cjs.development.js',
+      },
+    ],
+    plugins: [
+      typescript(
+        minified
+          ? defaultTsConfig
+          : { ...defaultTsConfig, declarationDir: 'dist/ts', declaration: true, declarationMap: true }
+      ),
+      replace({
+        values: {
+          'process.env.NODE_ENV': JSON.stringify(minified ? 'production' : 'development'),
+        },
+      }),
+      babel({
+        exclude: 'node_modules/**',
+        extensions: ['.js', '.ts'],
+        babelHelpers: 'runtime',
+        presets: [['@babel/preset-env', { targets: { node: true, browsers: ['defaults'] } }]],
+        plugins: [['@babel/plugin-transform-runtime', { useESModules: false }]],
+      }),
+      ...(minified ? [terser({ ...defaultTerserOptions, toplevel: true })] : []),
+    ],
+  })),
+];
+
+function withMinify(build) {
+  return [build(false), build(true)];
+}
+
+export default configs;

src/HandledError.ts

@@ -0,0 +1,3 @@
+export class HandledError {
+  constructor(public readonly value: any) {}
+}

src/core/buildThunks.ts

@@ -17,6 +17,7 @@ import { Patch, isDraftable, produceWithPatches, enablePatches } from 'immer';
 import { AnyAction, createAsyncThunk, ThunkAction, ThunkDispatch, AsyncThunk } from '@reduxjs/toolkit';
 
 import { PrefetchOptions } from '../react-hooks/buildHooks';
+import { HandledError } from '../HandledError';
 
 import { ApiEndpointQuery } from './module';
 
@@ -125,10 +126,6 @@ export type UpdateQueryResultThunk<Definitions extends EndpointDefinitions, Part
 
 type PatchCollection = { patches: Patch[]; inversePatches: Patch[] };
 
-export class HandledError {
-  constructor(public readonly value: any) {}
-}
-
 export function buildThunks<
   BaseQuery extends BaseQueryFn,
   ReducerPath extends string,

src/core/module.ts

@@ -22,7 +22,6 @@ import { buildMiddleware } from './buildMiddleware';
 import { buildSelectors } from './buildSelectors';
 import { buildInitiate } from './buildInitiate';
 import { assertCast, Id, safeAssign } from '../tsHelpers';
-import { IS_DEV } from '../utils';
 import { InternalSerializeQueryArgs } from '../defaultSerializeQueryArgs';
 import { SliceActions } from './buildSlice';
 import { BaseQueryFn } from '../baseQueryTypes';
@@ -114,7 +113,7 @@ export const coreModule: Module<CoreModule> = {
     assertCast<InternalSerializeQueryArgs<any>>(serializeQueryArgs);
 
     const assertEntityType: AssertEntityTypes = (entity) => {
-      if (IS_DEV()) {
+      if (typeof process !== 'undefined' && process.env.NODE_ENV === 'development') {
         if (!entityTypes.includes(entity.type as any)) {
           console.error(`Entity type '${entity.type}' was used, but not specified in \`entityTypes\`!`);
         }

src/createApi.ts

@@ -2,7 +2,6 @@ import type { Api, Module, ModuleName } from './apiTypes';
 import type { BaseQueryArg, BaseQueryFn } from './baseQueryTypes';
 import { defaultSerializeQueryArgs, SerializeQueryArgs } from './defaultSerializeQueryArgs';
 import { DefinitionType, EndpointBuilder, EndpointDefinitions } from './endpointDefinitions';
-import { IS_DEV } from './utils';
 
 export interface CreateApiOptions<
   BaseQuery extends BaseQueryFn,
@@ -62,7 +61,7 @@ export function buildCreateApi<Modules extends [Module<any>, ...Module<any>[]]>(
       });
 
       for (const [endpoint, definition] of Object.entries(evaluatedEndpoints)) {
-        if (IS_DEV()) {
+        if (typeof process !== 'undefined' && process.env.NODE_ENV === 'development') {
           if (!inject.overrideExisting && endpoint in context.endpointDefinitions) {
             console.error(
               `called \`injectEndpoints\` to override already-existing endpoint ${endpoint} without specifying \`overrideExisting: true\``

src/retry.ts

@@ -1,5 +1,5 @@
 import { BaseQueryEnhancer } from './baseQueryTypes';
-import { HandledError } from './core/buildThunks';
+import { HandledError } from './HandledError';
 
 async function defaultBackoff(attempt: number = 0, maxRetries: number = 5) {
   const attempts = Math.min(attempt, maxRetries);

src/utils/index.ts

@@ -5,7 +5,6 @@ export * from './flatten';
 export * from './shallowEqual';
 export * from './useShallowStableValue';
 export * from './capitalize';
-export * from './isDev';
 export * from './isOnline';
 export * from './isDocumentVisible';
 export * from './copyWithStructuralSharing';

tsconfig.json

@@ -1,7 +1,8 @@
 {
   // see https://www.typescriptlang.org/tsconfig to better understand tsconfigs
-  "include": ["src", "test/flatten.test.ts"],
+  "include": ["src"],
   "compilerOptions": {
+    "target": "ESnext",
     "module": "esnext",
     "lib": ["dom", "esnext"],
     "importHelpers": true,
@@ -31,6 +32,6 @@
     "forceConsistentCasingInFileNames": true,
     // `tsdx build` ignores this option, but it is commonly used when type-checking separately with `tsc`
     "noEmit": true,
-    "downlevelIteration": true
+    "downlevelIteration": false
   }
 }