ESM compliant bundling

.babelrc.js

@@ -1,5 +1,6 @@
 const { NODE_ENV, BABEL_ENV } = process.env
 const cjs = NODE_ENV === 'test' || BABEL_ENV === 'commonjs'
+const es = BABEL_ENV === 'es'
 const loose = true
 
 module.exports = {
@@ -20,10 +21,11 @@ module.exports = {
   ],
   plugins: [
     cjs && ['@babel/transform-modules-commonjs', { loose }],
-    [
+    es && ['babel-plugin-add-import-extension', { extension: 'mjs' }],
+    // no runtime for umd builds
+    BABEL_ENV && [
       '@babel/transform-runtime',
       {
-        useESModules: !cjs,
         version: require('./package.json').dependencies[
           '@babel/runtime'
         ].replace(/^[^0-9]*/, ''),

.github/workflows/test-and-publish.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [12, 14, 16]
+        node: [14, 16]
         react: [17, 18]
     steps:
       - uses: actions/checkout@v2

broadcastQueryClient-experimental/index.d.ts

@@ -0,0 +1 @@
+export * from '../lib/broadcastQueryClient-experimental'

broadcastQueryClient-experimental/index.js

@@ -0,0 +1 @@
+module.exports = require('../lib/broadcastQueryClient-experimental/index')

core/index.d.ts

@@ -0,0 +1 @@
+export * from '../lib/core'

core/index.js

@@ -0,0 +1 @@
+module.exports = require('../lib/core/index')

createAsyncStoragePersister/index.d.ts

@@ -0,0 +1 @@
+export * from '../lib/createAsyncStoragePersister'

createAsyncStoragePersister/index.js

@@ -0,0 +1 @@
+module.exports = require('../lib/createAsyncStoragePersister/index')

createWebStoragePersister/index.d.ts

@@ -0,0 +1 @@
+export * from '../lib/createWebStoragePersister'

createWebStoragePersister/index.js

@@ -0,0 +1 @@
+module.exports = require('../lib/createWebStoragePersister/index')

devtools/development/index.d.ts

@@ -0,0 +1 @@
+export * from '../../lib/devtools'

devtools/development/index.js

@@ -0,0 +1 @@
+module.exports = require('../../lib/devtools/index')

devtools/index.d.ts

@@ -0,0 +1 @@
+export * from '../lib/devtools'

devtools/index.js

@@ -1,12 +1,5 @@
 if (process.env.NODE_ENV !== 'development') {
-  module.exports = {
-    ReactQueryDevtools: function () {
-      return null
-    },
-    ReactQueryDevtoolsPanel: function () {
-      return null
-    },
-  }
+  module.exports = require('../lib/devtools/noop')
 } else {
-  module.exports = require('./development')
+  module.exports = require('../lib/devtools/index')
 }

docs/src/pages/guides/migrating-to-react-query-4.md

@@ -5,6 +5,10 @@ title: Migrating to React Query 4
 
 ## Breaking Changes
 
+### ESM Support
+
+React Query now supports [package.json `"exports"`](https://nodejs.org/api/packages.html#exports) and is fully compatible with Node's native resolution for both CommonJS and ESM. We don't expect this to be a breaking change for most users, but this restricts the files you can import into your project to only the entry points we officially support.
+
 ### Query Keys (and Mutation Keys) need to be an Array
 
 In v3, Query and Mutation Keys could be a String or an Array. Internally, React Query has always worked with Array Keys only, and we've sometimes exposed this to consumers. For example, in the `queryFn`, you would always get the key as an Array to make working with [Default Query Functions](./default-query-function) easier.
@@ -222,12 +226,12 @@ Even though React Query is an Async State Manager that can be used for anything
 new QueryClient({
   defaultOptions: {
     queries: {
-      networkMode: 'offlineFirst'
+      networkMode: 'offlineFirst',
     },
     mutations: {
-      networkmode: 'offlineFirst'
-    }
-  }
+      networkmode: 'offlineFirst',
+    },
+  },
 })
 ```
 
@@ -240,7 +244,6 @@ The `useQueries` hook now accepts an object with a `queries` prop as its input.
 + useQueries({ queries: [{ queryKey1, queryFn1, options1 }, { queryKey2, queryFn2, options2 }] })
 ```
 
-
 ### Removed undocumented methods from the `queryClient`, `query` and `mutation`
 
 The methods `cancelMutatations` and `executeMutation` on the `QueryClient` were undocumented and unused internally, so we removed them. Since it was just a wrapper around a method available on the `mutationCache`, you can still use the functionality of `executeMutation`
@@ -289,10 +292,7 @@ In order to make bailing out of updates possible by returning `undefined`, we ha
 Further, it is an easy bug to produce `Promise<void>` by adding logging in the queryFn:
 
 ```js
-useQuery(
-  ['key'],
-  () => axios.get(url).then(result => console.log(result.data))
-)
+useQuery(['key'], () => axios.get(url).then(result => console.log(result.data)))
 ```
 
 This is now disallowed on type level; at runtime, `undefined` will be transformed to a _failed Promise_, which means you will get an `error`, which will also be logged to the console in development mode.
@@ -349,19 +349,18 @@ React Query defaults to "tracking" query properties, which should give you a nic
 When using the [functional updater form of setQueryData](../reference/QueryClient#queryclientsetquerydata), you can now bail out of the update by returning `undefined`. This is helpful if `undefined` is given to you as `previousValue`, which means that currently, no cached entry exists and you don't want to / cannot create one, like in the example of toggling a todo:
 
 ```js
- queryClient.setQueryData(
-   ['todo', id],
-   (previousTodo) => previousTodo ? { ...previousTodo, done: true } : undefined
+queryClient.setQueryData(['todo', id], previousTodo =>
+  previousTodo ? { ...previousTodo, done: true } : undefined
 )
- ```
+```
 
- ### Custom Contexts for Multiple Providers
+### Custom Contexts for Multiple Providers
 
 Custom contexts can now be specified to pair hooks with their matching `Provider`. This is critical when there may be multiple React Query `Provider` instances in the component tree, and you need to ensure your hook uses the correct `Provider` instance.
 
 An example:
 
-1) Create a data package.
+1. Create a data package.
 
 ```tsx
 // Our first data package: @my-scope/container-data
@@ -375,42 +374,47 @@ export const useUser = () => {
   })
 }
 
-export const ContainerDataProvider = ({ children }: { children: React.ReactNode}) => {
+export const ContainerDataProvider = ({
+  children,
+}: {
+  children: React.ReactNode
+}) => {
   return (
     <QueryClientProvider client={queryClient} context={context}>
       {children}
     </QueryClientProvider>
   )
 }
-
 ```
 
-2) Create a second data package.
+2. Create a second data package.
 
 ```tsx
 // Our second data package: @my-scope/my-component-data
 
 const context = React.createContext<QueryClient | undefined>(undefined)
 const queryClient = new QueryClient()
 
-
 export const useItems = () => {
   return useQuery(ITEMS_KEY, ITEMS_FETCHER, {
     context,
   })
 }
 
-export const MyComponentDataProvider = ({ children }: { children: React.ReactNode}) => {
+export const MyComponentDataProvider = ({
+  children,
+}: {
+  children: React.ReactNode
+}) => {
   return (
     <QueryClientProvider client={queryClient} context={context}>
       {children}
     </QueryClientProvider>
   )
 }
-
 ```
 
-3) Use these two data packages in your application.
+3. Use these two data packages in your application.
 
 ```tsx
 // Our application

package.json

@@ -11,17 +11,60 @@
     "url": "https://github.com/sponsors/tannerlinsley"
   },
   "main": "lib/index.js",
+  "module": "lib/index.mjs",
+  "types": "lib/index.d.ts",
   "unpkg": "dist/react-query.development.js",
-  "types": "types/index.d.ts",
-  "module": "es/index.js",
   "sideEffects": [
-    "es/index.js",
-    "es/reactjs/index.js",
-    "es/reactjs/setBatchUpdatesFn.js",
     "lib/index.js",
+    "lib/index.mjs",
     "lib/reactjs/index.js",
-    "lib/reactjs/setBatchUpdatesFn.js"
+    "lib/reactjs/index.mjs",
+    "lib/reactjs/setBatchUpdatesFn.js",
+    "lib/reactjs/setBatchUpdatesFn.mjs"
   ],
+  "exports": {
+    ".": {
+      "import": "./lib/index.mjs",
+      "default": "./lib/index.js"
+    },
+    "./package.json": "./package.json",
+    "./core": {
+      "import": "./lib/core/index.mjs",
+      "default": "./lib/core/index.js"
+    },
+    "./reactjs": {
+      "import": "./lib/reactjs/index.mjs",
+      "default": "./lib/reactjs/index.js"
+    },
+    "./devtools": {
+      "development": {
+        "import": "./lib/devtools/index.mjs",
+        "default": "./lib/devtools/index.js"
+      },
+      "import": "./lib/devtools/noop.mjs",
+      "default": "./lib/devtools/noop.js"
+    },
+    "./devtools/development": {
+      "import": "./lib/devtools/index.mjs",
+      "default": "./lib/devtools/index.js"
+    },
+    "./persistQueryClient": {
+      "import": "./lib/persistQueryClient/index.mjs",
+      "default": "./lib/persistQueryClient/index.js"
+    },
+    "./createWebStoragePersister": {
+      "import": "./lib/createWebStoragePersister/index.mjs",
+      "default": "./lib/createWebStoragePersister/index.js"
+    },
+    "./createAsyncStoragePersister": {
+      "import": "./lib/createAsyncStoragePersister/index.mjs",
+      "default": "./lib/createAsyncStoragePersister/index.js"
+    },
+    "./broadcastQueryClient-experimental": {
+      "import": "./lib/broadcastQueryClient-experimental/index.mjs",
+      "default": "./lib/broadcastQueryClient-experimental/index.js"
+    }
+  },
   "scripts": {
     "test": "is-ci \"test:ci\" \"test:dev\"",
     "test:dev": "npm run test:types && npm run test:format && npm run test:eslint && npm run test:codemod && jest --watch",
@@ -34,42 +77,38 @@
     "test:size": "yarn build:umd && bundlewatch",
     "test:codemod": "jest --config codemods/jest.config.js",
     "build": "yarn build:commonjs && yarn build:es && yarn build:umd && yarn build:types",
-    "build:commonjs": "rimraf ./lib && cross-env BABEL_ENV=commonjs babel --extensions .ts,.tsx --ignore ./src/**/tests/**/* ./src --out-dir lib",
-    "build:es": "rimraf ./es && babel --extensions .ts,.tsx --ignore ./src/**/tests/**/* ./src --out-dir es",
+    "build:commonjs": "rimraf './lib/**/*.js' && cross-env BABEL_ENV=commonjs babel --extensions .ts,.tsx --ignore ./src/**/tests/**/* ./src --out-dir lib",
+    "build:es": "rimraf './lib/**/*.mjs' && cross-env BABEL_ENV=es babel --extensions .ts,.tsx --ignore ./src/**/tests/**/* ./src --out-dir lib --out-file-extension .mjs",
     "build:umd": "rimraf ./dist && cross-env NODE_ENV=production rollup -c && rollup-plugin-visualizer stats-react.json",
-    "build:types": "rimraf ./types && tsc --project ./tsconfig.types.json && replace 'import type' 'import' ./types -r --silent && replace 'export type' 'export' ./types -r --silent",
-    "watch": "yarn watch:commonjs & yarn watch:es & yarn watch:umd & yarn watch:types",
-    "watch:commonjs": "rimraf ./lib && cross-env BABEL_ENV=commonjs babel --watch --extensions .ts,.tsx --ignore ./src/**/tests/**/* ./src --out-dir lib",
-    "watch:es": "rimraf ./es && babel --watch --extensions .ts,.tsx --ignore ./src/**/tests/**/* ./src --out-dir es",
+    "build:types": "rimraf './lib/**/*.d.ts' && tsc --project ./tsconfig.types.json",
+    "watch": "yarn watch:commonjs && watch:es & yarn watch:umd & yarn watch:types",
+    "watch:commonjs": "rimraf './lib/**/*.js' && cross-env BABEL_ENV=commonjs babel --watch --extensions .ts,.tsx --ignore ./src/**/tests/**/* ./src --out-dir lib",
+    "watch:es": "rimraf './lib/**/*.mjs' && cross-env BABEL_ENV=es babel --watch --extensions .ts,.tsx --ignore ./src/**/tests/**/* ./src --out-dir lib --out-file-extension .mjs",
     "watch:umd": "rimraf ./dist && cross-env NODE_ENV=production rollup -w -c && rollup-plugin-visualizer stats-react.json",
-    "watch:types": "rimraf ./types && tsc --watch --project ./tsconfig.types.json && replace 'import type' 'import' ./types -r --silent && replace 'export type' 'export' ./types -r --silent",
+    "watch:types": "rimraf './lib/**/*.d.ts' && tsc --watch --project ./tsconfig.types.json",
     "now-build": "yarn && cd www && yarn && yarn build",
     "prettier": "prettier \"{.,src,src/**,example/src,example/src/**,types}/*.{md,js,jsx,ts,tsx,json}\"",
     "start": "yarn watch",
     "format": "yarn prettier --write",
     "stats": "open ./stats.html"
   },
   "files": [
-    "core",
     "dist",
-    "es",
-    "hydration",
+    "lib",
+    "core",
     "devtools",
     "persistQueryClient",
     "createWebStoragePersister",
     "createAsyncStoragePersister",
     "broadcastQueryClient-experimental",
-    "lib",
     "reactjs",
-    "scripts",
-    "types",
     "codemods",
     "!codemods/jest.config.js",
     "!codemods/**/__testfixtures__",
     "!codemods/**/__tests__"
   ],
   "dependencies": {
-    "@babel/runtime": "^7.5.5",
+    "@babel/runtime": "^7.17.9",
     "@types/use-sync-external-store": "^0.0.3",
     "broadcast-channel": "^3.4.1",
     "match-sorter": "^6.0.2",
@@ -88,16 +127,18 @@
   },
   "devDependencies": {
     "@babel/cli": "^7.17.6",
-    "@babel/core": "^7.17.5",
+    "@babel/core": "^7.17.9",
     "@babel/plugin-transform-runtime": "^7.17.0",
     "@babel/preset-env": "^7.16.11",
     "@babel/preset-react": "^7.16.7",
     "@babel/preset-typescript": "^7.16.7",
-    "@rollup/plugin-replace": "^3.0.0",
-    "@svgr/rollup": "^6.1.1",
+    "@rollup/plugin-babel": "^5.3.1",
+    "@rollup/plugin-commonjs": "21.1.0",
+    "@rollup/plugin-node-resolve": "^13.2.1",
+    "@rollup/plugin-replace": "^4.0.0",
+    "@testing-library/jest-dom": "^5.14.1",
     "@testing-library/react": "^13.0.0",
     "@testing-library/react-17": "npm:@testing-library/react@^12.1.4",
-    "@testing-library/jest-dom": "^5.14.1",
     "@types/jest": "^26.0.4",
     "@types/jscodeshift": "^0.11.3",
     "@types/node": "^16.11.10",
@@ -107,6 +148,7 @@
     "@typescript-eslint/parser": "^5.6.0",
     "babel-eslint": "^10.1.0",
     "babel-jest": "^26.0.1",
+    "babel-plugin-add-import-extension": "^1.6.0",
     "bundlewatch": "^0.3.2",
     "cross-env": "^7.0.2",
     "eslint": "7.x",
@@ -134,13 +176,8 @@
     "react-error-boundary": "^3.1.4",
     "replace": "^1.2.0",
     "rimraf": "^3.0.2",
-    "rollup": "^2.68.0",
-    "rollup-plugin-babel": "^4.4.0",
-    "rollup-plugin-commonjs": "^10.1.0",
-    "rollup-plugin-jscc": "^2.0.0",
-    "rollup-plugin-node-resolve": "^5.2.0",
-    "rollup-plugin-peer-deps-external": "^2.2.4",
-    "rollup-plugin-prettier": "^2.2.2",
+    "rollup": "^2.70.2",
+    "rollup-plugin-node-externals": "^4.0.0",
     "rollup-plugin-size": "^0.2.2",
     "rollup-plugin-terser": "^7.0.2",
     "rollup-plugin-visualizer": "^5.6.0",

persistQueryClient/index.d.ts

@@ -0,0 +1 @@
+export * from '../lib/persistQueryClient'