chore: remove React 16 & 17 code

chore: remove more

chore: react version 18.3.1

docs: migration guide

package.json

@@ -27,7 +27,6 @@
     "clean": "del build",
     "test": "jest",
     "test:ci": "jest --maxWorkers=2 --collectCoverage=true --coverage-provider=v8",
-    "test:react-17": "scripts/test_react_17",
     "typecheck": "tsc",
     "flow": "flow",
     "copy-flowtypes": "cp typings/index.flow.js build",
@@ -59,9 +58,9 @@
   },
   "peerDependencies": {
     "jest": ">=28.0.0",
-    "react": ">=16.8.0",
-    "react-native": ">=0.59",
-    "react-test-renderer": ">=16.8.0"
+    "react": ">=18.2.0",
+    "react-native": ">=0.73",
+    "react-test-renderer": ">=18.2.0"
   },
   "peerDependenciesMeta": {
     "jest": {
@@ -80,7 +79,7 @@
     "@release-it/conventional-changelog": "^8.0.1",
     "@relmify/jest-serializer-strip-ansi": "^1.0.2",
     "@types/jest": "^29.5.12",
-    "@types/react": "^18.2.65",
+    "@types/react": "^18.3.1",
     "@types/react-test-renderer": "^18.0.7",
     "babel-jest": "^29.7.0",
     "del-cli": "^5.1.0",
@@ -90,9 +89,9 @@
     "flow-bin": "~0.170.0",
     "jest": "^29.7.0",
     "prettier": "^2.8.8",
-    "react": "18.2.0",
+    "react": "18.3.1",
     "react-native": "0.74.1",
-    "react-test-renderer": "18.2.0",
+    "react-test-renderer": "18.3.1",
     "release-it": "^17.2.1",
     "strip-ansi": "^6.0.1",
     "typescript": "^5.4.5"

src/act.ts

@@ -1,7 +1,6 @@
 // This file and the act() implementation is sourced from react-testing-library
 // https://github.com/testing-library/react-testing-library/blob/c80809a956b0b9f3289c4a6fa8b5e8cc72d6ef6d/src/act-compat.js
 import { act as reactTestRendererAct } from 'react-test-renderer';
-import { checkReactVersionAtLeast } from './react-versions';
 
 type ReactAct = typeof reactTestRendererAct;
 
@@ -72,9 +71,7 @@ function withGlobalActEnvironment(actImplementation: ReactAct) {
   };
 }
 
-const act: ReactAct = checkReactVersionAtLeast(18, 0)
-  ? (withGlobalActEnvironment(reactTestRendererAct) as ReactAct)
-  : reactTestRendererAct;
+const act = withGlobalActEnvironment(reactTestRendererAct) as ReactAct;
 
 export default act;
 export { setIsReactActEnvironment as setReactActEnvironment, getIsReactActEnvironment };

src/helpers/wrap-async.ts

@@ -11,30 +11,15 @@ import { checkReactVersionAtLeast } from '../react-versions';
  * @returns Result of the callback
  */
 export async function wrapAsync<Result>(callback: () => Promise<Result>): Promise<Result> {
-  if (checkReactVersionAtLeast(18, 0)) {
-    const previousActEnvironment = getIsReactActEnvironment();
-    setReactActEnvironment(false);
+  const previousActEnvironment = getIsReactActEnvironment();
+  setReactActEnvironment(false);
 
-    try {
-      const result = await callback();
-      // Flush the microtask queue before restoring the `act` environment
-      await flushMicroTasks();
-      return result;
-    } finally {
-      setReactActEnvironment(previousActEnvironment);
-    }
+  try {
+    const result = await callback();
+    // Flush the microtask queue before restoring the `act` environment
+    await flushMicroTasks();
+    return result;
+  } finally {
+    setReactActEnvironment(previousActEnvironment);
   }
-
-  if (!checkReactVersionAtLeast(16, 9)) {
-    return callback();
-  }
-
-  // Wrapping with act for react version 16.9 to 17.x
-  let result: Result;
-  await act(async () => {
-    result = await callback();
-  });
-
-  // Either we have result or `callback` threw error
-  return result!;
 }

website/docs/MigrationV13.md

@@ -13,6 +13,12 @@ Migration to React Native Testing Library version 13 from version 12.x.
 
 # Breaking changes
 
+## Supported React and React Native versions
+
+This version supports only React 19 and corresponding React Native versions. If you use React 18 or 19, please use latest of v12 versions.
+
+[Note: at the moment there is no React Native for React 19, and React 19 is still in beta, so we use React 18.3 for the time being].
+
 ## Removed deprecated \*ByAccessibilityState queries
 
 This deprecated query has been removed as is typically too general to give meaningful results. Use one of the following options:

website/docs/OtherAPIs.md

@@ -101,10 +101,6 @@ await waitFor(() => {
 }, 10000);
 ```
 
-:::info
-In order to properly use `waitFor` you need at least React >=16.9.0 (featuring async `act`) or React Native >=0.61 (which comes with React >=16.9.0).
-:::
-
 :::note
 If you receive warnings related to `act()` function consult our [Undestanding Act](./UnderstandingAct.md) function document.
 :::

yarn.lock

@@ -3585,7 +3585,7 @@ __metadata:
     "@release-it/conventional-changelog": "npm:^8.0.1"
     "@relmify/jest-serializer-strip-ansi": "npm:^1.0.2"
     "@types/jest": "npm:^29.5.12"
-    "@types/react": "npm:^18.2.65"
+    "@types/react": "npm:^18.3.1"
     "@types/react-test-renderer": "npm:^18.0.7"
     babel-jest: "npm:^29.7.0"
     del-cli: "npm:^5.1.0"
@@ -3597,18 +3597,18 @@ __metadata:
     jest-matcher-utils: "npm:^29.7.0"
     prettier: "npm:^2.8.8"
     pretty-format: "npm:^29.7.0"
-    react: "npm:18.2.0"
+    react: "npm:18.3.1"
     react-native: "npm:0.74.1"
-    react-test-renderer: "npm:18.2.0"
+    react-test-renderer: "npm:18.3.1"
     redent: "npm:^3.0.0"
     release-it: "npm:^17.2.1"
     strip-ansi: "npm:^6.0.1"
     typescript: "npm:^5.4.5"
   peerDependencies:
     jest: ">=28.0.0"
-    react: ">=16.8.0"
-    react-native: ">=0.59"
-    react-test-renderer: ">=16.8.0"
+    react: ">=18.2.0"
+    react-native: ">=0.73"
+    react-test-renderer: ">=18.2.0"
   peerDependenciesMeta:
     jest:
       optional: true
@@ -3796,14 +3796,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/react@npm:^18.2.65":
-  version: 18.2.65
-  resolution: "@types/react@npm:18.2.65"
+"@types/react@npm:^18.3.1":
+  version: 18.3.1
+  resolution: "@types/react@npm:18.3.1"
   dependencies:
     "@types/prop-types": "npm:*"
-    "@types/scheduler": "npm:*"
     csstype: "npm:^3.0.2"
-  checksum: 10c0/91158b5a9e90489a5984bb610c3692001ecdf1d286c78384252698bcb306ef88e9434e75f01bf7739017e949e7690b7d6f1b7ef9d7097f86f3f649482a33604b
+  checksum: 10c0/18d856c12a4ec93f3cda2d58ef3d77a9480818afd3af895f812896fb82cfca1f35a692ab1add4ce826a4eb58a071624c7d1c8c6c4ccfb81c100d2916dc607614
   languageName: node
   linkType: hard
 
@@ -11004,7 +11003,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react-is@npm:^16.12.0 || ^17.0.0 || ^18.0.0, react-is@npm:^18.0.0, react-is@npm:^18.2.0":
+"react-is@npm:^16.12.0 || ^17.0.0 || ^18.0.0, react-is@npm:^18.0.0":
   version: 18.2.0
   resolution: "react-is@npm:18.2.0"
   checksum: 10c0/6eb5e4b28028c23e2bfcf73371e72cd4162e4ac7ab445ddae2afe24e347a37d6dc22fae6e1748632cd43c6d4f9b8f86dcf26bf9275e1874f436d129952528ae0
@@ -11025,6 +11024,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"react-is@npm:^18.3.1":
+  version: 18.3.1
+  resolution: "react-is@npm:18.3.1"
+  checksum: 10c0/f2f1e60010c683479e74c63f96b09fb41603527cd131a9959e2aee1e5a8b0caf270b365e5ca77d4a6b18aae659b60a86150bb3979073528877029b35aecd2072
+  languageName: node
+  linkType: hard
+
 "react-native@npm:0.74.1":
   version: 0.74.1
   resolution: "react-native@npm:0.74.1"
@@ -11097,25 +11103,25 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react-test-renderer@npm:18.2.0":
-  version: 18.2.0
-  resolution: "react-test-renderer@npm:18.2.0"
+"react-test-renderer@npm:18.3.1":
+  version: 18.3.1
+  resolution: "react-test-renderer@npm:18.3.1"
   dependencies:
-    react-is: "npm:^18.2.0"
+    react-is: "npm:^18.3.1"
     react-shallow-renderer: "npm:^16.15.0"
-    scheduler: "npm:^0.23.0"
+    scheduler: "npm:^0.23.2"
   peerDependencies:
-    react: ^18.2.0
-  checksum: 10c0/53dfada1da1e8dd0498a5601e9eea3dc6ca23c6c2694d1cab9712faea869c11e4ce1c9a618d674cb668a668b41fb6bcf9a7b0a078cd853b1922f002fa22f42c8
+    react: ^18.3.1
+  checksum: 10c0/c633558ef9af33bc68f0c4dbb5163a004c4fb9eade7bd0a7cfc0355fb367f36bd9d96533c90b7e85a146be6c525113a15f58683d269e0177ad77e2b04d4fe51c
   languageName: node
   linkType: hard
 
-"react@npm:18.2.0":
-  version: 18.2.0
-  resolution: "react@npm:18.2.0"
+"react@npm:18.3.1":
+  version: 18.3.1
+  resolution: "react@npm:18.3.1"
   dependencies:
     loose-envify: "npm:^1.1.0"
-  checksum: 10c0/b562d9b569b0cb315e44b48099f7712283d93df36b19a39a67c254c6686479d3980b7f013dc931f4a5a3ae7645eae6386b4aa5eea933baa54ecd0f9acb0902b8
+  checksum: 10c0/283e8c5efcf37802c9d1ce767f302dd569dd97a70d9bb8c7be79a789b9902451e0d16334b05d73299b20f048cbc3c7d288bbbde10b701fa194e2089c237dbea3
   languageName: node
   linkType: hard
 
@@ -11668,12 +11674,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"scheduler@npm:^0.23.0":
-  version: 0.23.0
-  resolution: "scheduler@npm:0.23.0"
+"scheduler@npm:^0.23.2":
+  version: 0.23.2
+  resolution: "scheduler@npm:0.23.2"
   dependencies:
     loose-envify: "npm:^1.1.0"
-  checksum: 10c0/b777f7ca0115e6d93e126ac490dbd82642d14983b3079f58f35519d992fa46260be7d6e6cede433a92db70306310c6f5f06e144f0e40c484199e09c1f7be53dd
+  checksum: 10c0/26383305e249651d4c58e6705d5f8425f153211aef95f15161c151f7b8de885f24751b377e4a0b3dd42cce09aad3f87a61dab7636859c0d89b7daf1a1e2a5c78
   languageName: node
   linkType: hard