Remove Babel support, and therefore enhanced assertions

This removes support for @ava/babel. Since enhanced assertions (power assert)
are provided through that package this also removes support for those. Same for
improper throws detection.

@ava/babel has seen no meaningful contributions since it was released at the
start of 2020. It's not clear how we'd make it work with ESM. It's clearer if we
can recommend tools like @babel/register and otherwise focus on plain Node.js &
TypeScript support.

.github/ISSUE_TEMPLATE/config.yml

@@ -5,4 +5,4 @@ contact_links:
     about: Questions? Ideas? Something to share?
   - name: Babel
     url: https://github.com/avajs/babel/issues
-    about: Report a bug with AVA's Babel integration
+    about: Report a bug with AVA 3's Babel integration

docs/03-assertions.md

@@ -77,7 +77,7 @@ test('skip assertion', t => {
 
 ## Enhanced assertion messages
 
-Enabling [Babel](./recipes/babel.md) will also enable [`power-assert`](https://github.com/power-assert-js/power-assert), giving you more descriptive assertion messages.
+With AVA 3, enabling [Babel](./recipes/babel.md) will also enable [`power-assert`](https://github.com/power-assert-js/power-assert), giving you more descriptive assertion messages.
 
 Let's take this example, using Node's standard [`assert` library](https://nodejs.org/api/assert.html):
 

docs/05-command-line.md

@@ -11,7 +11,8 @@ Commands:
   ava [<pattern>...]        Run tests                                  [default]
   ava debug [<pattern>...]  Activate Node.js inspector and run a single test
                             file
-  ava reset-cache           Reset AVA's compilation cache and exit
+  ava reset-cache           Delete any temporary files and state kept by AVA,
+	                          then exit
 
 Positionals:
   pattern  Glob patterns to select what test files to run. Leave empty if you
@@ -162,7 +163,7 @@ AVA lets you run tests exclusively by referring to their line numbers. Target a
 
 The format is a comma-separated list of `[X|Y-Z]` where `X`, `Y` and `Z` are integers between `1` and the last line number of the file.
 
-This feature is only available from the command line. It won't work if you use tools like `ts-node/register` or `@babel/register`, and it does not currently work with `@ava/babel` and `@ava/typescript`.
+This feature is only available from the command line. It won't work if you use tools like `ts-node/register` or `@babel/register`, and it does not currently work with `@ava/babel` (available for AVA 3) and `@ava/typescript`.
 
 ### Running a single test
 
@@ -218,7 +219,7 @@ When running a file with and without line numbers, line numbers take precedence.
 
 ## Resetting AVA's cache
 
-AVA itself does not cache files unless used with our [`@ava/babel`](https://github.com/avajs/babel) provider. If it seems like your latest changes aren't being picked up by AVA you can try resetting the cache by running:
+AVA 3 itself does not cache files unless used with our [`@ava/babel`](https://github.com/avajs/babel) provider. If it seems like your latest changes aren't being picked up by AVA you can try resetting the cache by running:
 
 ```console
 npx ava reset-cache

docs/06-configuration.md

@@ -61,7 +61,7 @@ Arguments passed to the CLI will always take precedence over the CLI options con
 
 Note that providing files on the CLI overrides the `files` option.
 
-Provide the `babel` option (and install [`@ava/babel`](https://github.com/avajs/babel) as an additional dependency) to enable Babel compilation.
+When using AVA 3, provide the `babel` option (and install [`@ava/babel`](https://github.com/avajs/babel) as an additional dependency) to enable Babel compilation.
 
 Provide the `typescript` option (and install [`@ava/typescript`](https://github.com/avajs/typescript) as an additional dependency) to enable (rudimentary) TypeScript support.
 

docs/08-common-pitfalls.md

@@ -56,6 +56,8 @@ AVA [can't trace uncaught exceptions](https://github.com/avajs/ava/issues/214) b
 
 ## Why are the enhanced assertion messages not shown?
 
+Enhanced assertion messages are no longer supported in AVA 4.
+
 Ensure that the first parameter passed into your test is named `t`. This is a requirement of [`power-assert`](https://github.com/power-assert-js/power-assert), the library that provides the [enhanced messages](./03-assertions.md#enhanced-assertion-messages).
 
 ```js

docs/recipes/babel.md

@@ -2,6 +2,8 @@
 
 Translations: [Français](https://github.com/avajs/ava-docs/blob/master/fr_FR/docs/recipes/babel.md)
 
+This is no longer available in AVA 4.
+
 You can enable Babel support by installing `@ava/babel`, and then in AVA's configuration setting `babel` to `true`:
 
 **`package.json`:**

docs/recipes/react.md

@@ -4,7 +4,7 @@ Translations: [Español](https://github.com/avajs/ava-docs/blob/master/es_ES/doc
 
 ## Setting up Babel
 
-When you [enable Babel](https://github.com/avajs/babel), AVA will automatically extend your regular (project-level) Babel configuration. You should be able to use React in your test files without any additional configuration.
+When you [enable Babel](https://github.com/avajs/babel), AVA 3 will automatically extend your regular (project-level) Babel configuration. You should be able to use React in your test files without any additional configuration.
 
 However if you want to set it up explicitly, add the preset to the test options in AVA's Babel pipeline by modifying your `package.json` or `ava.config.*` file.
 

docs/recipes/vue.md

@@ -53,7 +53,7 @@ hooks(['vue', 'js']).exclude(({filename}) => filename.match(/\/node_modules\//))
 
 **Note:** If you are using _babel-plugin-webpack-alias-7_, you must also exclude your webpack file - e.g. `filename.includes(/\/node_modules\//) || filename.includes('webpack.config.test.js')`
 
-You can find more information about setting up Babel with AVA in [`@ava/babel`](https://github.com/avajs/babel).
+You can find more information about setting up Babel with AVA 3 in [`@ava/babel`](https://github.com/avajs/babel).
 
 ## Sample snapshot test
 

lib/assert.js

@@ -25,10 +25,6 @@ function formatWithLabel(label, value) {
 	return formatDescriptorWithLabel(label, concordance.describe(value, concordanceOptions));
 }
 
-function formatPowerAssertValue(value) {
-	return concordance.format(value, concordanceOptions);
-}
-
 const hasOwnProperty = (object, prop) => Object.prototype.hasOwnProperty.call(object, prop);
 const noop = () => {};
 const notImplemented = () => {
@@ -52,9 +48,6 @@ export class AssertionError extends Error {
 		// use the values for custom diff views
 		this.raw = options.raw;
 
-		// Reserved for power-assert statements
-		this.statements = [];
-
 		this.savedError = options.savedError ? options.savedError : getErrorWithLongStackTrace();
 	}
 }
@@ -258,7 +251,6 @@ export class Assertions {
 		fail = notImplemented,
 		skip = notImplemented,
 		compareWithSnapshot = notImplemented,
-		powerAssert,
 		experiments = {},
 		disableSnapshots = false,
 	} = {}) {
@@ -267,35 +259,12 @@ export class Assertions {
 			return assertionFn;
 		};
 
-		// When adding new enhanced functions with new patterns, don't forget to
-		// enable the pattern in the power-assert compilation step in @ava/babel.
-		const withPowerAssert = (pattern, assertionFn) => powerAssert.empower(assertionFn, {
-			onError: event => {
-				if (event.powerAssertContext) {
-					event.error.statements = powerAssert.format(event.powerAssertContext, formatPowerAssertValue);
-				}
-
-				fail(event.error);
-				return false;
-			},
-			onSuccess: () => {
-				pass();
-				return true;
-			},
-			bindReceiver: false,
-			patterns: [pattern],
-		});
-
-		const checkMessage = (assertion, message, powerAssert = false) => {
+		const checkMessage = (assertion, message) => {
 			const result = checkAssertionMessage(assertion, message);
 			if (result === true) {
 				return true;
 			}
 
-			if (powerAssert) {
-				throw result;
-			}
-
 			fail(result);
 			return false;
 		};
@@ -948,41 +917,23 @@ export class Assertions {
 			return true;
 		});
 
-		if (powerAssert === undefined) {
-			this.assert = withSkip((actual, message) => {
-				if (!checkMessage('assert', message)) {
-					return false;
-				}
+		this.assert = withSkip((actual, message) => {
+			if (!checkMessage('assert', message)) {
+				return false;
+			}
 
-				if (!actual) {
-					fail(new AssertionError({
-						assertion: 'assert',
-						message,
-						operator: '!!',
-						values: [formatWithLabel('Value is not truthy:', actual)],
-					}));
-					return false;
-				}
+			if (!actual) {
+				fail(new AssertionError({
+					assertion: 'assert',
+					message,
+					operator: '!!',
+					values: [formatWithLabel('Value is not truthy:', actual)],
+				}));
+				return false;
+			}
 
-				pass();
-				return true;
-			});
-		} else {
-			this.assert = withSkip(withPowerAssert(
-				'assert(value, [message])',
-				(actual, message) => {
-					checkMessage('assert', message, true);
-
-					if (!actual) {
-						throw new AssertionError({
-							assertion: 'assert',
-							message,
-							operator: '!!',
-							values: [formatWithLabel('Value is not truthy:', actual)],
-						});
-					}
-				}),
-			);
-		}
+			pass();
+			return true;
+		});
 	}
 }

lib/cli.js

@@ -199,7 +199,7 @@ export default async function loadCli() { // eslint-disable-line complexity
 			})
 		.command(
 			'reset-cache',
-			'Reset AVA’s compilation cache and exit',
+			'Delete any temporary files and state kept by AVA, then exit',
 			yargs => yargs,
 			() => {
 				resetCache = true;
@@ -295,6 +295,10 @@ export default async function loadCli() { // eslint-disable-line complexity
 		console.log(chalk.magenta(`  ${figures.warning} Experiments are enabled. These are unsupported and may change or be removed at any time.`));
 	}
 
+	if (Reflect.has(conf, 'babel')) {
+		exit('Built-in Babel support has been removed.');
+	}
+
 	if (Reflect.has(conf, 'compileEnhancements')) {
 		exit('Enhancement compilation must be configured in AVA’s Babel options.');
 	}
@@ -319,19 +323,6 @@ export default async function loadCli() { // eslint-disable-line complexity
 	const {type: defaultModuleType = 'commonjs'} = pkg || {};
 
 	const providers = [];
-	if (Reflect.has(conf, 'babel')) {
-		try {
-			const {level, main} = await providerManager.babel(projectDir);
-			providers.push({
-				level,
-				main: main({config: conf.babel}),
-				type: 'babel',
-			});
-		} catch (error) {
-			exit(error.message);
-		}
-	}
-
 	if (Reflect.has(conf, 'typescript')) {
 		try {
 			const {level, main} = await providerManager.typescript(projectDir);

lib/eslint-plugin-helper-worker.js

@@ -12,15 +12,6 @@ const configCache = new Map();
 
 const collectProviders = async ({conf, projectDir}) => {
 	const providers = [];
-	if (Reflect.has(conf, 'babel')) {
-		const {level, main} = await providerManager.babel(projectDir);
-		providers.push({
-			level,
-			main: main({config: conf.babel}),
-			type: 'babel',
-		});
-	}
-
 	if (Reflect.has(conf, 'typescript')) {
 		const {level, main} = await providerManager.typescript(projectDir);
 		providers.push({

lib/provider-manager.js

@@ -51,9 +51,6 @@ async function load(providerModule, projectDir) {
 
 const providerManager = {
 	levels,
-	async babel(projectDir) {
-		return load('@ava/babel', projectDir);
-	},
 	async typescript(projectDir) {
 		return load('@ava/typescript', projectDir);
 	},

lib/reporters/beautify-stack.js

@@ -2,12 +2,8 @@ import StackUtils from 'stack-utils';
 
 const stackUtils = new StackUtils({
 	ignoredPackages: [
-		'@ava/babel',
-		'@ava/require-precompiled',
 		'@ava/typescript',
-		'append-transform',
 		'ava',
-		'empower-core',
 		'nyc',
 	],
 	internals: [

lib/reporters/format-serialized-error.js

@@ -1,11 +1,9 @@
-import {chalk} from '../chalk.js';
-
 export default function formatSerializedError(error) {
 	const printMessage = error.values.length === 0
 		? Boolean(error.message)
 		: !error.values[0].label.startsWith(error.message);
 
-	if (error.statements.length === 0 && error.values.length === 0) {
+	if (error.values.length === 0) {
 		return {formatted: null, printMessage};
 	}
 
@@ -14,9 +12,5 @@ export default function formatSerializedError(error) {
 		formatted += `${value.label}\n\n${value.formatted}\n\n`;
 	}
 
-	for (const statement of error.statements) {
-		formatted += `${statement[0]}\n${chalk.grey('=>')} ${statement[1]}\n\n`;
-	}
-
 	return {formatted: formatted.trim(), printMessage};
 }

lib/runner.js

@@ -23,7 +23,6 @@ export default class Runner extends Emittery {
 		this.file = options.file;
 		this.checkSelectedByLineNumbers = options.checkSelectedByLineNumbers;
 		this.match = options.match || [];
-		this.powerAssert = undefined; // Assigned later.
 		this.projectDir = options.projectDir;
 		this.recordNewSnapshots = options.recordNewSnapshots === true;
 		this.runOnlyExclusive = options.runOnlyExclusive === true;
@@ -224,16 +223,6 @@ export default class Runner extends Emittery {
 		this.activeRunnables.delete(runnable);
 	}
 
-	attributeLeakedError(error) {
-		for (const runnable of this.activeRunnables) {
-			if (runnable.attributeLeakedError(error)) {
-				return true;
-			}
-		}
-
-		return false;
-	}
-
 	beforeExitHandler() {
 		for (const runnable of this.activeRunnables) {
 			runnable.finishDueToInactivity();
@@ -299,7 +288,6 @@ export default class Runner extends Emittery {
 			skipSnapshot: this.boundSkipSnapshot,
 			updateSnapshots: this.updateSnapshots,
 			metadata: task.metadata,
-			powerAssert: this.powerAssert,
 			title: `${task.title}${titleSuffix || ''}`,
 			isHook: true,
 			testPassed,
@@ -352,7 +340,6 @@ export default class Runner extends Emittery {
 				skipSnapshot: this.boundSkipSnapshot,
 				updateSnapshots: this.updateSnapshots,
 				metadata: task.metadata,
-				powerAssert: this.powerAssert,
 				title: task.title,
 				registerUniqueTitle: this.registerUniqueTitle,
 				notifyTimeoutUpdate: this.notifyTimeoutUpdate,

lib/serialize-error.js

@@ -89,7 +89,6 @@ function trySerializeError(error, shouldBeautifyStack, testFile) {
 		retval.improperUsage = error.improperUsage;
 		retval.message = error.message;
 		retval.name = error.name;
-		retval.statements = error.statements;
 		retval.values = error.values;
 
 		if (error.fixedSource) {

lib/test.js

@@ -37,7 +37,6 @@ class ExecutionContext extends Assertions {
 				test.countPassedAssertion();
 			},
 			compareWithSnapshot: options => test.compareWithSnapshot(options),
-			powerAssert: test.powerAssert,
 			experiments: test.experiments,
 			disableSnapshots: test.isHook === true,
 		});
@@ -176,14 +175,6 @@ class ExecutionContext extends Assertions {
 		const test = testMap.get(this);
 		return test.isHook ? test.testPassed : !test.assertError;
 	}
-
-	_throwsArgStart(assertion, file, line) {
-		testMap.get(this).trackThrows({assertion, file, line});
-	}
-
-	_throwsArgEnd() {
-		testMap.get(this).trackThrows(null);
-	}
 }
 
 export default class Test {
@@ -194,7 +185,6 @@ export default class Test {
 		this.fn = options.fn;
 		this.isHook = options.isHook === true;
 		this.metadata = options.metadata;
-		this.powerAssert = options.powerAssert;
 		this.title = options.title;
 		this.testPassed = options.testPassed;
 		this.registerUniqueTitle = options.registerUniqueTitle;
@@ -278,13 +268,11 @@ export default class Test {
 		this.attemptCount = 0;
 		this.calledEnd = false;
 		this.duration = null;
-		this.finishDueToAttributedError = null;
 		this.finishDueToInactivity = null;
 		this.finishDueToTimeout = null;
 		this.finishing = false;
 		this.pendingAssertionCount = 0;
 		this.pendingAttemptCount = 0;
-		this.pendingThrowsAssertion = null;
 		this.planCount = null;
 		this.startedAt = 0;
 		this.timeoutMs = 0;
@@ -512,60 +500,6 @@ export default class Test {
 		}
 	}
 
-	trackThrows(pending) {
-		this.pendingThrowsAssertion = pending;
-	}
-
-	detectImproperThrows(error) {
-		if (!this.pendingThrowsAssertion) {
-			return false;
-		}
-
-		const pending = this.pendingThrowsAssertion;
-		this.pendingThrowsAssertion = null;
-
-		const values = [];
-		if (error) {
-			values.push(formatErrorValue(`The following error was thrown, possibly before \`t.${pending.assertion}()\` could be called:`, error));
-		}
-
-		this.saveFirstError(new AssertionError({
-			assertion: pending.assertion,
-			fixedSource: {file: pending.file, line: pending.line},
-			improperUsage: true,
-			message: `Improper usage of \`t.${pending.assertion}()\` detected`,
-			savedError: error instanceof Error && error,
-			values,
-		}));
-		return true;
-	}
-
-	waitForPendingThrowsAssertion() {
-		return new Promise(resolve => {
-			this.finishDueToAttributedError = () => {
-				resolve(this.finish());
-			};
-
-			this.finishDueToInactivity = () => {
-				this.detectImproperThrows();
-				resolve(this.finish());
-			};
-
-			// Wait up to a second to see if an error can be attributed to the
-			// pending assertion.
-			nowAndTimers.setTimeout(() => this.finishDueToInactivity(), 1000).unref();
-		});
-	}
-
-	attributeLeakedError(error) {
-		if (!this.detectImproperThrows(error)) {
-			return false;
-		}
-
-		this.finishDueToAttributedError();
-		return true;
-	}
-
 	callFn() {
 		try {
 			return {
@@ -585,13 +519,11 @@ export default class Test {
 
 		const result = this.callFn();
 		if (!result.ok) {
-			if (!this.detectImproperThrows(result.error)) {
-				this.saveFirstError(new AssertionError({
-					message: 'Error thrown in test',
-					savedError: result.error instanceof Error && result.error,
-					values: [formatErrorValue('Error thrown in test:', result.error)],
-				}));
-			}
+			this.saveFirstError(new AssertionError({
+				message: 'Error thrown in test',
+				savedError: result.error instanceof Error && result.error,
+				values: [formatErrorValue('Error thrown in test:', result.error)],
+			}));
 
 			return this.finish();
 		}
@@ -632,13 +564,11 @@ export default class Test {
 
 				promise
 					.catch(error => { // eslint-disable-line promise/prefer-await-to-then
-						if (!this.detectImproperThrows(error)) {
-							this.saveFirstError(new AssertionError({
-								message: 'Rejected promise returned by test',
-								savedError: error instanceof Error && error,
-								values: [formatErrorValue('Rejected promise returned by test. Reason:', error)],
-							}));
-						}
+						this.saveFirstError(new AssertionError({
+							message: 'Rejected promise returned by test',
+							savedError: error instanceof Error && error,
+							values: [formatErrorValue('Rejected promise returned by test. Reason:', error)],
+						}));
 					})
 					.then(() => resolve(this.finish())); // eslint-disable-line promise/prefer-await-to-then
 			});
@@ -650,10 +580,6 @@ export default class Test {
 	async finish() {
 		this.finishing = true;
 
-		if (!this.assertError && this.pendingThrowsAssertion) {
-			return this.waitForPendingThrowsAssertion();
-		}
-
 		this.clearTimeout();
 		this.verifyPlan();
 		this.verifyAssertions();

lib/worker/base.js

@@ -73,13 +73,6 @@ const run = async options => {
 		runner.interrupt();
 	});
 
-	const attributedRejections = new Set();
-	process.on('unhandledRejection', (reason, promise) => {
-		if (runner.attributeLeakedError(reason)) {
-			attributedRejections.add(promise);
-		}
-	});
-
 	runner.on('dependency', dependencyTracking.track);
 	runner.on('stateChange', state => channel.send(state));
 
@@ -109,7 +102,7 @@ const run = async options => {
 		}
 
 		nowAndTimers.setImmediate(() => {
-			for (const rejection of currentlyUnhandled().filter(rejection => !attributedRejections.has(rejection.promise))) {
+			for (const rejection of currentlyUnhandled()) {
 				channel.send({type: 'unhandled-rejection', err: serializeError('Unhandled rejection', true, rejection.reason, runner.file)});
 			}
 
@@ -118,10 +111,6 @@ const run = async options => {
 	});
 
 	process.on('uncaughtException', error => {
-		if (runner.attributeLeakedError(error)) {
-			return;
-		}
-
 		channel.send({type: 'uncaught-exception', err: serializeError('Uncaught exception', true, error, runner.file)});
 		exit(1);
 	});
@@ -137,12 +126,6 @@ const run = async options => {
 	// require configuration the *compiled* helper will be loaded.
 	const {projectDir, providerStates = []} = options;
 	const providers = (await Promise.all(providerStates.map(async ({type, state}) => {
-		if (type === 'babel') {
-			const provider = (await providerManager.babel(projectDir)).worker({extensionsToLoadAsModules, state});
-			runner.powerAssert = provider.powerAssert;
-			return provider;
-		}
-
 		if (type === 'typescript') {
 			return (await providerManager.typescript(projectDir)).worker({extensionsToLoadAsModules, state});
 		}

media/screenshot-fixtures/power-assert.js

@@ -1,8 +0,0 @@
-import test from 'ava';
-
-test('power-assert', t => {
-	const a = /foo/;
-	const b = 'bar';
-	const c = 'baz';
-	t.assert(a.test(b) || b === c);
-});

package.json

@@ -52,7 +52,6 @@
 		"tap",
 		"qunit",
 		"jasmine",
-		"babel",
 		"assert",
 		"assertion",
 		"promise",
@@ -123,9 +122,8 @@
 		"yargs": "^17.1.1"
 	},
 	"devDependencies": {
-		"@ava/babel": "^2.0.0",
 		"@ava/test": "github:avajs/test",
-		"@babel/plugin-proposal-do-expressions": "^7.14.5",
+		"@ava/typescript": "^2.0.0",
 		"@sinonjs/fake-timers": "^7.1.2",
 		"ansi-escapes": "^5.0.0",
 		"c8": "^7.9.0",
@@ -146,13 +144,9 @@
 		"zen-observable": "^0.8.15"
 	},
 	"peerDependencies": {
-		"@ava/babel": "*",
 		"@ava/typescript": "*"
 	},
 	"peerDependenciesMeta": {
-		"@ava/babel": {
-			"optional": true
-		},
 		"@ava/typescript": {
 			"optional": true
 		}

readme.md

@@ -22,7 +22,6 @@ Translations: [Español](https://github.com/avajs/ava-docs/blob/master/es_ES/rea
 - Includes TypeScript definitions
 - [Magic assert](#magic-assert)
 - [Isolated environment for each test file](./docs/01-writing-tests.md#process-isolation)
-- [Write your tests using the latest JavaScript syntax](https://github.com/avajs/babel)
 - [Promise support](./docs/01-writing-tests.md#promise-support)
 - [Async function support](./docs/01-writing-tests.md#async-function-support)
 - [Observable support](./docs/01-writing-tests.md#observable-support)
@@ -148,7 +147,6 @@ We have a growing list of [common pitfalls](docs/08-common-pitfalls.md) you may
 - [When to use `t.plan()`](docs/recipes/when-to-use-plan.md)
 - [Browser testing](docs/recipes/browser-testing.md)
 - [TypeScript](docs/recipes/typescript.md)
-- [Configuring Babel](https://github.com/avajs/babel)
 - [Using ES modules](docs/recipes/es-modules.md)
 - [Passing arguments to your test files](docs/recipes/passing-arguments-to-your-test-files.md)
 - [Testing React components](docs/recipes/react.md)
@@ -190,7 +188,7 @@ It's the [Andromeda galaxy](https://simple.wikipedia.org/wiki/Andromeda_galaxy).
 
 - [eslint-plugin-ava](https://github.com/avajs/eslint-plugin-ava) — Lint rules for AVA tests
 - [@ava/typescript](https://github.com/avajs/typescript) — Test TypeScript projects
-- [@ava/babel](https://github.com/avajs/babel) — Compile test files using Babel
+- [@ava/babel](https://github.com/avajs/babel) — Compile test files using Babel, for AVA 3
 - [@ava/cooperate](https://github.com/avajs/cooperate) — Low-level primitives to enable cooperation between test files
 - [@ava/get-port](https://github.com/avajs/get-port) — Reserve a port while testing
 

test-tap/api.js

@@ -7,20 +7,12 @@ import {test} from 'tap';
 
 import Api from '../lib/api.js';
 import {normalizeGlobs} from '../lib/globs.js';
-import providerManager from '../lib/provider-manager.js';
 
 const __dirname = fileURLToPath(new URL('.', import.meta.url));
 const ROOT_DIR = path.join(__dirname, '..');
 
 async function apiCreator(options = {}) {
 	options.projectDir = options.projectDir || ROOT_DIR;
-	if (options.babelConfig !== undefined) {
-		options.providers = [{
-			type: 'babel',
-			main: (await providerManager.babel(options.projectDir)).main({config: options.babelConfig}),
-		}];
-	}
-
 	options.chalkOptions = {level: 0};
 	options.concurrency = 2;
 	options.extensions = options.extensions || ['cjs'];
@@ -330,56 +322,6 @@ for (const opt of opts) {
 			});
 	});
 
-	test(`enhanced assertion formatting necessary whitespace and empty strings - workerThreads: ${opt.workerThreads}`, async t => {
-		const expected = [
-			[
-				/foo === "" && "" === foo/,
-				/foo === ""/,
-				/foo/,
-			],
-			[
-				/!\(new Object\(foo\) instanceof Object\)/,
-				/new Object\(foo\) instanceof Object/,
-				/Object/,
-				/new Object\(foo\)/,
-				/foo/,
-			],
-			[
-				/\[foo].filter\(item => {\n\s+return item === "bar";\n}\).length > 0/,
-				/\[foo].filter\(item => {\n\s+return item === "bar";\n}\).length/,
-				/\[foo].filter\(item => {\n\s+return item === "bar";\n}\)/,
-				/\[foo]/,
-				/foo/,
-			],
-		];
-
-		t.plan(15);
-		const api = await apiCreator({
-			...opt,
-			files: ['test-tap/fixture/enhanced-assertion-formatting.cjs'],
-			babelConfig: true,
-		});
-		const errors = [];
-		api.on('run', plan => {
-			plan.status.on('stateChange', evt => {
-				if (evt.type === 'test-failed') {
-					errors.push(evt.err);
-				}
-			});
-		});
-		return api.run({files: [path.join(__dirname, 'fixture/enhanced-assertion-formatting.cjs')]})
-			.then(runStatus => {
-				t.equal(errors.length, 3);
-				t.equal(runStatus.stats.passedTests, 0);
-
-				for (const [errorIndex, error] of errors.entries()) {
-					for (const [statementIndex, statement] of error.statements.entries()) {
-						t.match(statement[0], expected[errorIndex][statementIndex]);
-					}
-				}
-			});
-	});
-
 	test(`absolute paths - workerThreads:  ${opt.workerThreads}`, async t => {
 		const api = await apiCreator(opt);
 
@@ -441,20 +383,17 @@ for (const opt of opts) {
 
 		const api = await apiCreator({
 			...opt,
-			babelConfig: true,
 			projectDir: path.join(__dirname, 'fixture/caching'),
 		});
 
 		return api.run({files: [path.join(__dirname, 'fixture/caching/test.cjs')]})
 			.then(() => {
 				const files = fs.readdirSync(path.join(__dirname, 'fixture/caching/node_modules/.cache/ava'));
-				t.equal(files.filter(x => x.endsWith('.cjs')).length, 1);
-				t.equal(files.filter(x => x.endsWith('.map')).length, 1);
-				if (files.length === 3) {
+				if (files.length === 1) {
 					// This file may be written locally, but not in CI.
 					t.equal(files.filter(x => x.startsWith('failing-tests.json')).length, 1);
 				} else {
-					t.equal(files.length, 2);
+					t.equal(files.length, 0);
 				}
 			});
 	});

test-tap/assert.js

@@ -53,16 +53,6 @@ function assertFailure(t, subset) {
 		t.equal(lastFailure.raw.actual, subset.raw.actual);
 	}
 
-	if (subset.statements) {
-		t.equal(lastFailure.statements.length, subset.statements.length);
-		for (const [i, s] of lastFailure.statements.entries()) {
-			t.equal(s[0], subset.statements[i][0]);
-			t.match(s[1], subset.statements[i][1]);
-		}
-	} else {
-		t.same(lastFailure.statements, []);
-	}
-
 	if (subset.values) {
 		t.equal(lastFailure.values.length, subset.values.length);
 		for (const [i, s] of lastFailure.values.entries()) {

test-tap/fixture/enhanced-assertion-formatting.cjs

@@ -1,23 +0,0 @@
-const test = require('../../entrypoints/main.cjs');
-
-const foo = 'foo';
-
-test('fails with multiple empty string expressions and mixed quotes', t => {
-	// eslint-disable-next-line quotes, yoda
-	t.assert(foo === '' && "" === foo);
-});
-
-test('fails with "instanceof" expression', t => {
-	// eslint-disable-next-line no-new-object
-	t.assert(!(new Object(foo) instanceof Object));
-});
-
-test('fails with multiple lines', t => {
-	/* eslint-disable unicorn/prefer-array-some, arrow-body-style */
-	t.assert(
-		[foo].filter(item => {
-			return item === 'bar';
-		}).length > 0,
-	);
-	/* eslint-enable unicorn/prefer-array-some, arrow-body-style */
-});

test-tap/fixture/eslint-plugin-helper/ava.config.mjs

@@ -1,8 +1,11 @@
 export default {
 	extensions: [],
 	files: ['tests/**/*'],
-	babel: {
-		compileAsTests: ['helpers/*'],
+	typescript: {
+		compile: false,
+		rewritePaths: {
+			'src/': 'build/',
+		},
 		extensions: ['foo'],
 	},
 };

test-tap/fixture/eslint-plugin-helper/for-overriding/ava.config.mjs

@@ -1,7 +1,10 @@
 export default {
 	extensions: [],
-	babel: {
-		compileAsTests: ['build/helpers/*'],
+	typescript: {
+		rewritePaths: {
+			'src/': 'build/',
+		},
+		compile: false,
 		extensions: ['bar'],
 	},
 	files: ['build/tests/**/*'],

test-tap/fixture/improper-t-throws/caught-and-leaked-slowly.cjs

@@ -1,15 +0,0 @@
-const test = require('../../../entrypoints/main.cjs');
-
-test('test', t => {
-	try {
-		t.throws(throwSync());
-	} catch (error) {
-		setTimeout(() => {
-			throw error;
-		}, 500);
-	}
-});
-
-function throwSync() {
-	throw new Error('should be detected');
-}

test-tap/fixture/improper-t-throws/caught-and-leaked-too-slowly.cjs

@@ -1,15 +0,0 @@
-const test = require('../../../entrypoints/main.cjs');
-
-test('test', t => {
-	try {
-		t.throws(throwSync());
-	} catch (error) {
-		setTimeout(() => {
-			throw error;
-		}, 1500);
-	}
-});
-
-function throwSync() {
-	throw new Error('should be detected');
-}

test-tap/fixture/improper-t-throws/caught-and-leaked.cjs

@@ -1,15 +0,0 @@
-const test = require('../../../entrypoints/main.cjs');
-
-test('test', t => {
-	try {
-		t.throws(throwSync());
-	} catch (error) {
-		setImmediate(() => {
-			throw error;
-		});
-	}
-});
-
-function throwSync() {
-	throw new Error('should be detected');
-}

test-tap/fixture/improper-t-throws/caught.cjs

@@ -1,11 +0,0 @@
-const test = require('../../../entrypoints/main.cjs');
-
-test('test', t => {
-	try {
-		t.throws(throwSync());
-	} catch {}
-});
-
-function throwSync() {
-	throw new Error('should be detected');
-}

test-tap/fixture/improper-t-throws/leaked-from-promise.cjs

@@ -1,17 +0,0 @@
-const test = require('../../../entrypoints/main.cjs');
-
-test('test', t => {
-	try {
-		t.throws(throwSync());
-	} catch (error) {
-		setImmediate(() => {
-			throw error;
-		});
-	}
-
-	return new Promise(() => {});
-});
-
-function throwSync() {
-	throw new Error('should be detected');
-}

test-tap/fixture/improper-t-throws/package.json

@@ -1,6 +0,0 @@
-{
-  "ava": {
-    "files": ["*.*"],
-    "babel": true
-  }
-}

test-tap/fixture/improper-t-throws/promise.cjs

@@ -1,9 +0,0 @@
-const test = require('../../../entrypoints/main.cjs');
-
-test('test', t => Promise.resolve().then(() => {
-	t.throws(throwSync());
-}));
-
-function throwSync() {
-	throw new Error('should be detected');
-}

test-tap/fixture/improper-t-throws/throws.cjs

@@ -1,9 +0,0 @@
-const test = require('../../../entrypoints/main.cjs');
-
-test('test', t => {
-	t.throws(throwSync());
-});
-
-function throwSync() {
-	throw new Error('should be detected');
-}

test-tap/fixture/improper-t-throws/unhandled-rejection.cjs

@@ -1,16 +0,0 @@
-const delay = require('delay');
-
-const test = require('../../../entrypoints/main.cjs');
-
-test('test', async t => {
-	Promise.resolve().then(() => {
-		t.throws(throwSync());
-	});
-
-	await delay(20);
-	t.pass();
-});
-
-function throwSync() {
-	throw new Error('should be detected');
-}

test-tap/fixture/report/regular/test.cjs

@@ -22,27 +22,6 @@ test('formatted', t => {
 	t.deepEqual('foo', 'bar');
 });
 
-test('power-assert', t => {
-	const foo = '';
-	t.assert(foo);
-});
-
-test('bad throws', t => {
-	const fn = () => {
-		throw new Error('err');
-	};
-
-	t.throws(fn());
-});
-
-test('bad notThrows', t => {
-	const fn = () => {
-		throw new Error('err');
-	};
-
-	t.notThrows(fn());
-});
-
 test('implementation throws non-error', () => {
 	const error = null;
 	throw error;

test-tap/helper/report.js

@@ -9,7 +9,6 @@ import Api from '../../lib/api.js';
 import {_testOnlyReplaceWorkerPath} from '../../lib/fork.js';
 import {normalizeGlobs} from '../../lib/globs.js';
 import pkg from '../../lib/pkg.cjs';
-import providerManager from '../../lib/provider-manager.js';
 
 _testOnlyReplaceWorkerPath(new URL('report-worker.js', import.meta.url));
 
@@ -56,17 +55,7 @@ exports.projectDir = type => path.join(__dirname, '../fixture/report', type.toLo
 const run = async (type, reporter, {match = [], filter} = {}) => {
 	const projectDir = exports.projectDir(type);
 
-	const providers = [{
-		type: 'babel',
-		level: 'ava-3',
-		main: (await providerManager.babel(projectDir)).main({
-			config: {
-				testOptions: {
-					plugins: ['@babel/plugin-proposal-do-expressions'],
-				},
-			},
-		}),
-	}];
+	const providers = [];
 
 	const options = {
 		extensions: ['cjs'],

test-tap/integration/t-throws.js

@@ -1,83 +0,0 @@
-import {test} from 'tap';
-
-import {execCli} from '../helper/cli.js';
-
-test('improper use of t.throws will be reported to the console', t => {
-	execCli('throws.cjs', {dirname: 'fixture/improper-t-throws'}, (err, stdout) => {
-		t.ok(err);
-		t.match(stdout, /Improper usage of `t\.throws\(\)` detected/);
-		t.match(stdout, /should be detected/);
-		t.match(stdout, /Try wrapping the first argument/);
-		t.end();
-	});
-});
-
-test('improper use of t.throws from within a Promise will be reported to the console', t => {
-	execCli('promise.cjs', {dirname: 'fixture/improper-t-throws'}, (err, stdout) => {
-		t.ok(err);
-		t.match(stdout, /Improper usage of `t\.throws\(\)` detected/);
-		t.match(stdout, /should be detected/);
-		t.match(stdout, /Try wrapping the first argument/);
-		t.end();
-	});
-});
-
-test('improper use of t.throws from within a pending promise, even if caught and rethrown immediately, will be reported to the console', t => {
-	execCli('leaked-from-promise.cjs', {dirname: 'fixture/improper-t-throws'}, (err, stdout) => {
-		t.ok(err);
-		t.match(stdout, /Improper usage of `t\.throws\(\)` detected/);
-		t.match(stdout, /should be detected/);
-		t.match(stdout, /Try wrapping the first argument/);
-		t.end();
-	});
-});
-
-test('improper use of t.throws, swallowed as an unhandled rejection, will be reported to the console', t => {
-	execCli('unhandled-rejection.cjs', {dirname: 'fixture/improper-t-throws'}, (err, stdout) => {
-		t.ok(err);
-		t.match(stdout, /Improper usage of `t\.throws\(\)` detected/);
-		t.match(stdout, /should be detected/);
-		t.match(stdout, /Try wrapping the first argument/);
-		t.end();
-	});
-});
-
-test('improper use of t.throws, even if caught, will be reported to the console', t => {
-	execCli('caught.cjs', {dirname: 'fixture/improper-t-throws'}, (err, stdout) => {
-		t.ok(err);
-		t.match(stdout, /Improper usage of `t\.throws\(\)` detected/);
-		t.notMatch(stdout, /should be detected/);
-		t.match(stdout, /Try wrapping the first argument/);
-		t.end();
-	});
-});
-
-test('improper use of t.throws, even if caught and then rethrown immediately, will be reported to the console', t => {
-	execCli('caught-and-leaked.cjs', {dirname: 'fixture/improper-t-throws'}, (err, stdout) => {
-		t.ok(err);
-		t.match(stdout, /Improper usage of `t\.throws\(\)` detected/);
-		t.match(stdout, /should be detected/);
-		t.match(stdout, /Try wrapping the first argument/);
-		t.end();
-	});
-});
-
-test('improper use of t.throws, even if caught and then later rethrown, will be reported to the console', t => {
-	execCli('caught-and-leaked-slowly.cjs', {dirname: 'fixture/improper-t-throws'}, (err, stdout) => {
-		t.ok(err);
-		t.match(stdout, /Improper usage of `t\.throws\(\)` detected/);
-		t.match(stdout, /should be detected/);
-		t.match(stdout, /Try wrapping the first argument/);
-		t.end();
-	});
-});
-
-test('improper use of t.throws, even if caught and then rethrown too slowly, will be reported to the console', t => {
-	execCli('caught-and-leaked-too-slowly.cjs', {dirname: 'fixture/improper-t-throws'}, (err, stdout) => {
-		t.ok(err);
-		t.match(stdout, /Improper usage of `t\.throws\(\)` detected/);
-		t.notMatch(stdout, /should be detected/);
-		t.match(stdout, /Try wrapping the first argument/);
-		t.end();
-	});
-});

test-tap/reporters/default.edgecases.v12.log

@@ -2,7 +2,17 @@
 ---tty-stream-chunk-separator
   ⚠ Could not parse ast-syntax-error.cjs for line number selection
 ---tty-stream-chunk-separator
-  ✖ Line numbers for ast-syntax-error.cjs did not match any tests
+
+  Uncaught exception in ast-syntax-error.cjs
+
+  ~/test-tap/fixture/report/edgecases/ast-syntax-error.cjs:3
+  const fn = do {
+             ^^
+
+  SyntaxError: Unexpected token 'do'
+
+---tty-stream-chunk-separator
+  ✖ ast-syntax-error.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
   ✖ No tests found in ava-import-no-test-declaration.cjs
 ---tty-stream-chunk-separator
@@ -43,5 +53,5 @@
 ---tty-stream-chunk-separator
   ─
 
-  2 uncaught exceptions
+  3 uncaught exceptions
 ---tty-stream-chunk-separator

test-tap/reporters/default.edgecases.v14.log

@@ -2,7 +2,13 @@
 ---tty-stream-chunk-separator
   ⚠ Could not parse ast-syntax-error.cjs for line number selection
 ---tty-stream-chunk-separator
-  ✖ Line numbers for ast-syntax-error.cjs did not match any tests
+
+  Uncaught exception in ast-syntax-error.cjs
+
+  SyntaxError: Unexpected token 'do'
+
+---tty-stream-chunk-separator
+  ✖ ast-syntax-error.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
   ✖ No tests found in ava-import-no-test-declaration.cjs
 ---tty-stream-chunk-separator
@@ -43,5 +49,5 @@
 ---tty-stream-chunk-separator
   ─
 
-  2 uncaught exceptions
+  3 uncaught exceptions
 ---tty-stream-chunk-separator

test-tap/reporters/default.edgecases.v16.log

@@ -2,7 +2,13 @@
 ---tty-stream-chunk-separator
   ⚠ Could not parse ast-syntax-error.cjs for line number selection
 ---tty-stream-chunk-separator
-  ✖ Line numbers for ast-syntax-error.cjs did not match any tests
+
+  Uncaught exception in ast-syntax-error.cjs
+
+  SyntaxError: Unexpected token 'do'
+
+---tty-stream-chunk-separator
+  ✖ ast-syntax-error.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
   ✖ No tests found in ava-import-no-test-declaration.cjs
 ---tty-stream-chunk-separator
@@ -43,5 +49,5 @@
 ---tty-stream-chunk-separator
   ─
 
-  2 uncaught exceptions
+  3 uncaught exceptions
 ---tty-stream-chunk-separator

test-tap/reporters/default.regular.v12.log

@@ -61,12 +61,6 @@
     ℹ world
 ---tty-stream-chunk-separator
   ✖ test › formatted 
----tty-stream-chunk-separator
-  ✖ test › power-assert 
----tty-stream-chunk-separator
-  ✖ test › bad throws Improper usage of `t.throws()` detected
----tty-stream-chunk-separator
-  ✖ test › bad notThrows Improper usage of `t.notThrows()` detected
 ---tty-stream-chunk-separator
   ✖ test › implementation throws non-error Error thrown in test
 ---tty-stream-chunk-separator
@@ -243,83 +237,6 @@
 
 
 
-  test › power-assert
-
-  test.cjs:27
-
-   26:   const foo = '';
-   27:   t.assert(foo); 
-   28: });              
-
-  Value is not truthy:
-
-  ''
-
-  foo
-  => ''
-
-  › test-tap/fixture/report/regular/test.cjs:27:4
-
-
-
-  test › bad throws
-
-  test.cjs:35
-
-   34:                  
-   35:   t.throws(fn());
-   36: });              
-
-  Improper usage of `t.throws()` detected
-
-  The following error was thrown, possibly before `t.throws()` could be called:
-
-  Error {
-    message: 'err',
-  }
-
-  Try wrapping the first argument to `t.throws()` in a function:
-
-    t.throws(() => { /* your code here */ })
-
-  Visit the following URL for more details:
-
-    https://github.com/avajs/ava/blob/VERSION/docs/03-assertions.md#throwsfn-expected-message
-
-  › fn (test-tap/fixture/report/regular/test.cjs:32:9)
-  › test-tap/fixture/report/regular/test.cjs:35:11
-
-
-
-  test › bad notThrows
-
-  test.cjs:43
-
-   42:                     
-   43:   t.notThrows(fn());
-   44: });                 
-
-  Improper usage of `t.notThrows()` detected
-
-  The following error was thrown, possibly before `t.notThrows()` could be called:
-
-  Error {
-    message: 'err',
-  }
-
-  Try wrapping the first argument to `t.notThrows()` in a function:
-
-    t.notThrows(() => { /* your code here */ })
-
-  Visit the following URL for more details:
-
-    https://github.com/avajs/ava/blob/VERSION/docs/03-assertions.md#throwsfn-expected-message
-
-  › fn (test-tap/fixture/report/regular/test.cjs:40:9)
-  › test-tap/fixture/report/regular/test.cjs:43:14
-
-
-
   test › implementation throws non-error
 
   Error thrown in test:
@@ -347,7 +264,7 @@
   Function TypeError {}
 
   › throwError (test-tap/fixture/report/regular/traces-in-t-throws.cjs:4:8)
-  › test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17
+  › t.throws.instanceOf (test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17)
   › test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:4
 
 
@@ -435,7 +352,7 @@
 
   ─
 
-  16 tests failed
+  13 tests failed
   1 known failure
   1 test skipped
   1 test todo

test-tap/reporters/default.regular.v14.log

@@ -61,12 +61,6 @@
     ℹ world
 ---tty-stream-chunk-separator
   ✖ test › formatted 
----tty-stream-chunk-separator
-  ✖ test › power-assert 
----tty-stream-chunk-separator
-  ✖ test › bad throws Improper usage of `t.throws()` detected
----tty-stream-chunk-separator
-  ✖ test › bad notThrows Improper usage of `t.notThrows()` detected
 ---tty-stream-chunk-separator
   ✖ test › implementation throws non-error Error thrown in test
 ---tty-stream-chunk-separator
@@ -243,83 +237,6 @@
 
 
 
-  test › power-assert
-
-  test.cjs:27
-
-   26:   const foo = '';
-   27:   t.assert(foo); 
-   28: });              
-
-  Value is not truthy:
-
-  ''
-
-  foo
-  => ''
-
-  › test-tap/fixture/report/regular/test.cjs:27:4
-
-
-
-  test › bad throws
-
-  test.cjs:35
-
-   34:                  
-   35:   t.throws(fn());
-   36: });              
-
-  Improper usage of `t.throws()` detected
-
-  The following error was thrown, possibly before `t.throws()` could be called:
-
-  Error {
-    message: 'err',
-  }
-
-  Try wrapping the first argument to `t.throws()` in a function:
-
-    t.throws(() => { /* your code here */ })
-
-  Visit the following URL for more details:
-
-    https://github.com/avajs/ava/blob/VERSION/docs/03-assertions.md#throwsfn-expected-message
-
-  › fn (test-tap/fixture/report/regular/test.cjs:32:9)
-  › test-tap/fixture/report/regular/test.cjs:35:11
-
-
-
-  test › bad notThrows
-
-  test.cjs:43
-
-   42:                     
-   43:   t.notThrows(fn());
-   44: });                 
-
-  Improper usage of `t.notThrows()` detected
-
-  The following error was thrown, possibly before `t.notThrows()` could be called:
-
-  Error {
-    message: 'err',
-  }
-
-  Try wrapping the first argument to `t.notThrows()` in a function:
-
-    t.notThrows(() => { /* your code here */ })
-
-  Visit the following URL for more details:
-
-    https://github.com/avajs/ava/blob/VERSION/docs/03-assertions.md#throwsfn-expected-message
-
-  › fn (test-tap/fixture/report/regular/test.cjs:40:9)
-  › test-tap/fixture/report/regular/test.cjs:43:14
-
-
-
   test › implementation throws non-error
 
   Error thrown in test:
@@ -347,7 +264,7 @@
   Function TypeError {}
 
   › throwError (test-tap/fixture/report/regular/traces-in-t-throws.cjs:4:8)
-  › test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17
+  › t.throws.instanceOf (test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17)
   › test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:4
 
 
@@ -435,7 +352,7 @@
 
   ─
 
-  16 tests failed
+  13 tests failed
   1 known failure
   1 test skipped
   1 test todo

test-tap/reporters/default.regular.v16.log

@@ -61,12 +61,6 @@
     ℹ world
 ---tty-stream-chunk-separator
   ✖ test › formatted 
----tty-stream-chunk-separator
-  ✖ test › power-assert 
----tty-stream-chunk-separator
-  ✖ test › bad throws Improper usage of `t.throws()` detected
----tty-stream-chunk-separator
-  ✖ test › bad notThrows Improper usage of `t.notThrows()` detected
 ---tty-stream-chunk-separator
   ✖ test › implementation throws non-error Error thrown in test
 ---tty-stream-chunk-separator
@@ -243,83 +237,6 @@
 
 
 
-  test › power-assert
-
-  test.cjs:27
-
-   26:   const foo = '';
-   27:   t.assert(foo); 
-   28: });              
-
-  Value is not truthy:
-
-  ''
-
-  foo
-  => ''
-
-  › test-tap/fixture/report/regular/test.cjs:27:4
-
-
-
-  test › bad throws
-
-  test.cjs:35
-
-   34:                  
-   35:   t.throws(fn());
-   36: });              
-
-  Improper usage of `t.throws()` detected
-
-  The following error was thrown, possibly before `t.throws()` could be called:
-
-  Error {
-    message: 'err',
-  }
-
-  Try wrapping the first argument to `t.throws()` in a function:
-
-    t.throws(() => { /* your code here */ })
-
-  Visit the following URL for more details:
-
-    https://github.com/avajs/ava/blob/VERSION/docs/03-assertions.md#throwsfn-expected-message
-
-  › fn (test-tap/fixture/report/regular/test.cjs:32:9)
-  › test-tap/fixture/report/regular/test.cjs:35:11
-
-
-
-  test › bad notThrows
-
-  test.cjs:43
-
-   42:                     
-   43:   t.notThrows(fn());
-   44: });                 
-
-  Improper usage of `t.notThrows()` detected
-
-  The following error was thrown, possibly before `t.notThrows()` could be called:
-
-  Error {
-    message: 'err',
-  }
-
-  Try wrapping the first argument to `t.notThrows()` in a function:
-
-    t.notThrows(() => { /* your code here */ })
-
-  Visit the following URL for more details:
-
-    https://github.com/avajs/ava/blob/VERSION/docs/03-assertions.md#throwsfn-expected-message
-
-  › fn (test-tap/fixture/report/regular/test.cjs:40:9)
-  › test-tap/fixture/report/regular/test.cjs:43:14
-
-
-
   test › implementation throws non-error
 
   Error thrown in test:
@@ -347,7 +264,7 @@
   Function TypeError {}
 
   › throwError (test-tap/fixture/report/regular/traces-in-t-throws.cjs:4:8)
-  › test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17
+  › t.throws.instanceOf (test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17)
   › test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:4
 
 
@@ -435,7 +352,7 @@
 
   ─
 
-  16 tests failed
+  13 tests failed
   1 known failure
   1 test skipped
   1 test todo

test-tap/reporters/tap.edgecases.v12.log

@@ -1,8 +1,21 @@
 TAP version 13
 ---tty-stream-chunk-separator
-not ok 1 - No tests found in ava-import-no-test-declaration.cjs
+not ok 1 - ~/test-tap/fixture/report/edgecases/ast-syntax-error.cjs:3
+const fn = do {
+           ^^
+
+SyntaxError: Unexpected token 'do'
+  ---
+    name: SyntaxError
+    message: Unexpected token 'do'
+    at: ''
+  ...
 ---tty-stream-chunk-separator
-not ok 2 - TypeError: test is not a function
+not ok 2 - ast-syntax-error.cjs exited with a non-zero exit code: 1
+---tty-stream-chunk-separator
+not ok 3 - No tests found in ava-import-no-test-declaration.cjs
+---tty-stream-chunk-separator
+not ok 4 - TypeError: test is not a function
   ---
     name: TypeError
     message: test is not a function
@@ -11,23 +24,23 @@ not ok 2 - TypeError: test is not a function
       (test-tap/fixture/report/edgecases/import-and-use-test-member.cjs:3:1)
   ...
 ---tty-stream-chunk-separator
-not ok 3 - import-and-use-test-member.cjs exited with a non-zero exit code: 1
+not ok 5 - import-and-use-test-member.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
-not ok 4 - No tests found in no-ava-import.cjs, make sure to import "ava" at the top of your test file
+not ok 6 - No tests found in no-ava-import.cjs, make sure to import "ava" at the top of your test file
 ---tty-stream-chunk-separator
-not ok 5 - Error: throws
+not ok 7 - Error: throws
   ---
     name: Error
     message: throws
     at: 'Object.<anonymous> (test-tap/fixture/report/edgecases/throws.cjs:1:7)'
   ...
 ---tty-stream-chunk-separator
-not ok 6 - throws.cjs exited with a non-zero exit code: 1
+not ok 8 - throws.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
 
 1..0
 # tests 0
 # pass 0
-# fail 6
+# fail 8
 
 ---tty-stream-chunk-separator

test-tap/reporters/tap.edgecases.v14.log

@@ -1,8 +1,17 @@
 TAP version 13
 ---tty-stream-chunk-separator
-not ok 1 - No tests found in ava-import-no-test-declaration.cjs
+not ok 1 - SyntaxError: Unexpected token 'do'
+  ---
+    name: SyntaxError
+    message: Unexpected token 'do'
+    at: ''
+  ...
 ---tty-stream-chunk-separator
-not ok 2 - TypeError: test is not a function
+not ok 2 - ast-syntax-error.cjs exited with a non-zero exit code: 1
+---tty-stream-chunk-separator
+not ok 3 - No tests found in ava-import-no-test-declaration.cjs
+---tty-stream-chunk-separator
+not ok 4 - TypeError: test is not a function
   ---
     name: TypeError
     message: test is not a function
@@ -11,23 +20,23 @@ not ok 2 - TypeError: test is not a function
       (test-tap/fixture/report/edgecases/import-and-use-test-member.cjs:3:1)
   ...
 ---tty-stream-chunk-separator
-not ok 3 - import-and-use-test-member.cjs exited with a non-zero exit code: 1
+not ok 5 - import-and-use-test-member.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
-not ok 4 - No tests found in no-ava-import.cjs, make sure to import "ava" at the top of your test file
+not ok 6 - No tests found in no-ava-import.cjs, make sure to import "ava" at the top of your test file
 ---tty-stream-chunk-separator
-not ok 5 - Error: throws
+not ok 7 - Error: throws
   ---
     name: Error
     message: throws
     at: 'Object.<anonymous> (test-tap/fixture/report/edgecases/throws.cjs:1:7)'
   ...
 ---tty-stream-chunk-separator
-not ok 6 - throws.cjs exited with a non-zero exit code: 1
+not ok 8 - throws.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
 
 1..0
 # tests 0
 # pass 0
-# fail 6
+# fail 8
 
 ---tty-stream-chunk-separator

test-tap/reporters/tap.edgecases.v16.log

@@ -1,8 +1,17 @@
 TAP version 13
 ---tty-stream-chunk-separator
-not ok 1 - No tests found in ava-import-no-test-declaration.cjs
+not ok 1 - SyntaxError: Unexpected token 'do'
+  ---
+    name: SyntaxError
+    message: Unexpected token 'do'
+    at: ''
+  ...
 ---tty-stream-chunk-separator
-not ok 2 - TypeError: test is not a function
+not ok 2 - ast-syntax-error.cjs exited with a non-zero exit code: 1
+---tty-stream-chunk-separator
+not ok 3 - No tests found in ava-import-no-test-declaration.cjs
+---tty-stream-chunk-separator
+not ok 4 - TypeError: test is not a function
   ---
     name: TypeError
     message: test is not a function
@@ -11,23 +20,23 @@ not ok 2 - TypeError: test is not a function
       (test-tap/fixture/report/edgecases/import-and-use-test-member.cjs:3:1)
   ...
 ---tty-stream-chunk-separator
-not ok 3 - import-and-use-test-member.cjs exited with a non-zero exit code: 1
+not ok 5 - import-and-use-test-member.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
-not ok 4 - No tests found in no-ava-import.cjs, make sure to import "ava" at the top of your test file
+not ok 6 - No tests found in no-ava-import.cjs, make sure to import "ava" at the top of your test file
 ---tty-stream-chunk-separator
-not ok 5 - Error: throws
+not ok 7 - Error: throws
   ---
     name: Error
     message: throws
     at: 'Object.<anonymous> (test-tap/fixture/report/edgecases/throws.cjs:1:7)'
   ...
 ---tty-stream-chunk-separator
-not ok 6 - throws.cjs exited with a non-zero exit code: 1
+not ok 8 - throws.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
 
 1..0
 # tests 0
 # pass 0
-# fail 6
+# fail 8
 
 ---tty-stream-chunk-separator

test-tap/reporters/tap.regular.v12.log

@@ -135,47 +135,7 @@ not ok 14 - test › formatted
     at: 'test-tap/fixture/report/regular/test.cjs:22:4'
   ...
 ---tty-stream-chunk-separator
-not ok 15 - test › power-assert
-  ---
-    name: AssertionError
-    assertion: assert
-    operator: '!!'
-    values:
-      'Value is not truthy:': ''''''
-    at: 'test-tap/fixture/report/regular/test.cjs:27:4'
-  ...
----tty-stream-chunk-separator
-not ok 16 - test › bad throws
-  ---
-    name: AssertionError
-    message: Improper usage of `t.throws()` detected
-    assertion: throws
-    values:
-      'The following error was thrown, possibly before `t.throws()` could be called:': |-
-        Error {
-          message: 'err',
-        }
-    at: |-
-      fn (test-tap/fixture/report/regular/test.cjs:32:9)
-      test-tap/fixture/report/regular/test.cjs:35:11
-  ...
----tty-stream-chunk-separator
-not ok 17 - test › bad notThrows
-  ---
-    name: AssertionError
-    message: Improper usage of `t.notThrows()` detected
-    assertion: notThrows
-    values:
-      'The following error was thrown, possibly before `t.notThrows()` could be called:': |-
-        Error {
-          message: 'err',
-        }
-    at: |-
-      fn (test-tap/fixture/report/regular/test.cjs:40:9)
-      test-tap/fixture/report/regular/test.cjs:43:14
-  ...
----tty-stream-chunk-separator
-not ok 18 - test › implementation throws non-error
+not ok 15 - test › implementation throws non-error
   ---
     name: AssertionError
     message: Error thrown in test
@@ -184,7 +144,7 @@ not ok 18 - test › implementation throws non-error
     at: ''
   ...
 ---tty-stream-chunk-separator
-not ok 19 - traces-in-t-throws › throws
+not ok 16 - traces-in-t-throws › throws
   ---
     name: AssertionError
     assertion: throws
@@ -194,13 +154,16 @@ not ok 19 - traces-in-t-throws › throws
           message: 'uh-oh',
         }
       'Expected instance of:': 'Function TypeError {}'
-    at: |-
+    at: >-
       throwError (test-tap/fixture/report/regular/traces-in-t-throws.cjs:4:8)
-      test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17
+
+      t.throws.instanceOf
+      (test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17)
+
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:4
   ...
 ---tty-stream-chunk-separator
-not ok 20 - traces-in-t-throws › notThrows
+not ok 17 - traces-in-t-throws › notThrows
   ---
     name: AssertionError
     assertion: notThrows
@@ -215,7 +178,7 @@ not ok 20 - traces-in-t-throws › notThrows
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:16:4
   ...
 ---tty-stream-chunk-separator
-not ok 21 - traces-in-t-throws › notThrowsAsync
+not ok 18 - traces-in-t-throws › notThrowsAsync
   ---
     name: AssertionError
     assertion: notThrowsAsync
@@ -230,7 +193,7 @@ not ok 21 - traces-in-t-throws › notThrowsAsync
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:20:4
   ...
 ---tty-stream-chunk-separator
-not ok 22 - traces-in-t-throws › throwsAsync
+not ok 19 - traces-in-t-throws › throwsAsync
   ---
     name: AssertionError
     assertion: throwsAsync
@@ -248,7 +211,7 @@ not ok 22 - traces-in-t-throws › throwsAsync
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:24:4
   ...
 ---tty-stream-chunk-separator
-not ok 23 - traces-in-t-throws › throwsAsync different error
+not ok 20 - traces-in-t-throws › throwsAsync different error
   ---
     name: AssertionError
     assertion: throwsAsync
@@ -265,9 +228,9 @@ not ok 23 - traces-in-t-throws › throwsAsync different error
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:27:44
   ...
 ---tty-stream-chunk-separator
-ok 24 - uncaught-exception › passes
+ok 21 - uncaught-exception › passes
 ---tty-stream-chunk-separator
-not ok 25 - Error: Can’t catch me
+not ok 22 - Error: Can’t catch me
   ---
     name: Error
     message: Can’t catch me
@@ -276,30 +239,30 @@ not ok 25 - Error: Can’t catch me
       (test-tap/fixture/report/regular/uncaught-exception.cjs:5:9)
   ...
 ---tty-stream-chunk-separator
-not ok 26 - uncaught-exception.cjs exited with a non-zero exit code: 1
+not ok 23 - uncaught-exception.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
-ok 27 - unhandled-rejection › passes
+ok 24 - unhandled-rejection › passes
 ---tty-stream-chunk-separator
-ok 28 - unhandled-rejection › unhandled non-error rejection
+ok 25 - unhandled-rejection › unhandled non-error rejection
 ---tty-stream-chunk-separator
-not ok 29 - Error: Can’t catch me
+not ok 26 - Error: Can’t catch me
   ---
     name: Error
     message: Can’t catch me
     at: 'passes (test-tap/fixture/report/regular/unhandled-rejection.cjs:4:17)'
   ...
 ---tty-stream-chunk-separator
-not ok 30 - unhandled-rejection
+not ok 27 - unhandled-rejection
   ---
     message: Non-error object
     formatted: 'null'
   ...
 ---tty-stream-chunk-separator
 
-1..24
-# tests 23
+1..21
+# tests 20
 # pass 6
 # skip 1
-# fail 23
+# fail 20
 
 ---tty-stream-chunk-separator

test-tap/reporters/tap.regular.v14.log

@@ -135,47 +135,7 @@ not ok 14 - test › formatted
     at: 'test-tap/fixture/report/regular/test.cjs:22:4'
   ...
 ---tty-stream-chunk-separator
-not ok 15 - test › power-assert
-  ---
-    name: AssertionError
-    assertion: assert
-    operator: '!!'
-    values:
-      'Value is not truthy:': ''''''
-    at: 'test-tap/fixture/report/regular/test.cjs:27:4'
-  ...
----tty-stream-chunk-separator
-not ok 16 - test › bad throws
-  ---
-    name: AssertionError
-    message: Improper usage of `t.throws()` detected
-    assertion: throws
-    values:
-      'The following error was thrown, possibly before `t.throws()` could be called:': |-
-        Error {
-          message: 'err',
-        }
-    at: |-
-      fn (test-tap/fixture/report/regular/test.cjs:32:9)
-      test-tap/fixture/report/regular/test.cjs:35:11
-  ...
----tty-stream-chunk-separator
-not ok 17 - test › bad notThrows
-  ---
-    name: AssertionError
-    message: Improper usage of `t.notThrows()` detected
-    assertion: notThrows
-    values:
-      'The following error was thrown, possibly before `t.notThrows()` could be called:': |-
-        Error {
-          message: 'err',
-        }
-    at: |-
-      fn (test-tap/fixture/report/regular/test.cjs:40:9)
-      test-tap/fixture/report/regular/test.cjs:43:14
-  ...
----tty-stream-chunk-separator
-not ok 18 - test › implementation throws non-error
+not ok 15 - test › implementation throws non-error
   ---
     name: AssertionError
     message: Error thrown in test
@@ -184,7 +144,7 @@ not ok 18 - test › implementation throws non-error
     at: ''
   ...
 ---tty-stream-chunk-separator
-not ok 19 - traces-in-t-throws › throws
+not ok 16 - traces-in-t-throws › throws
   ---
     name: AssertionError
     assertion: throws
@@ -194,13 +154,16 @@ not ok 19 - traces-in-t-throws › throws
           message: 'uh-oh',
         }
       'Expected instance of:': 'Function TypeError {}'
-    at: |-
+    at: >-
       throwError (test-tap/fixture/report/regular/traces-in-t-throws.cjs:4:8)
-      test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17
+
+      t.throws.instanceOf
+      (test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17)
+
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:4
   ...
 ---tty-stream-chunk-separator
-not ok 20 - traces-in-t-throws › notThrows
+not ok 17 - traces-in-t-throws › notThrows
   ---
     name: AssertionError
     assertion: notThrows
@@ -215,7 +178,7 @@ not ok 20 - traces-in-t-throws › notThrows
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:16:4
   ...
 ---tty-stream-chunk-separator
-not ok 21 - traces-in-t-throws › notThrowsAsync
+not ok 18 - traces-in-t-throws › notThrowsAsync
   ---
     name: AssertionError
     assertion: notThrowsAsync
@@ -230,7 +193,7 @@ not ok 21 - traces-in-t-throws › notThrowsAsync
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:20:4
   ...
 ---tty-stream-chunk-separator
-not ok 22 - traces-in-t-throws › throwsAsync
+not ok 19 - traces-in-t-throws › throwsAsync
   ---
     name: AssertionError
     assertion: throwsAsync
@@ -248,7 +211,7 @@ not ok 22 - traces-in-t-throws › throwsAsync
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:24:4
   ...
 ---tty-stream-chunk-separator
-not ok 23 - traces-in-t-throws › throwsAsync different error
+not ok 20 - traces-in-t-throws › throwsAsync different error
   ---
     name: AssertionError
     assertion: throwsAsync
@@ -265,9 +228,9 @@ not ok 23 - traces-in-t-throws › throwsAsync different error
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:27:44
   ...
 ---tty-stream-chunk-separator
-ok 24 - uncaught-exception › passes
+ok 21 - uncaught-exception › passes
 ---tty-stream-chunk-separator
-not ok 25 - Error: Can’t catch me
+not ok 22 - Error: Can’t catch me
   ---
     name: Error
     message: Can’t catch me
@@ -276,30 +239,30 @@ not ok 25 - Error: Can’t catch me
       (test-tap/fixture/report/regular/uncaught-exception.cjs:5:9)
   ...
 ---tty-stream-chunk-separator
-not ok 26 - uncaught-exception.cjs exited with a non-zero exit code: 1
+not ok 23 - uncaught-exception.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
-ok 27 - unhandled-rejection › passes
+ok 24 - unhandled-rejection › passes
 ---tty-stream-chunk-separator
-ok 28 - unhandled-rejection › unhandled non-error rejection
+ok 25 - unhandled-rejection › unhandled non-error rejection
 ---tty-stream-chunk-separator
-not ok 29 - Error: Can’t catch me
+not ok 26 - Error: Can’t catch me
   ---
     name: Error
     message: Can’t catch me
     at: 'passes (test-tap/fixture/report/regular/unhandled-rejection.cjs:4:17)'
   ...
 ---tty-stream-chunk-separator
-not ok 30 - unhandled-rejection
+not ok 27 - unhandled-rejection
   ---
     message: Non-error object
     formatted: 'null'
   ...
 ---tty-stream-chunk-separator
 
-1..24
-# tests 23
+1..21
+# tests 20
 # pass 6
 # skip 1
-# fail 23
+# fail 20
 
 ---tty-stream-chunk-separator

test-tap/reporters/tap.regular.v16.log

@@ -135,47 +135,7 @@ not ok 14 - test › formatted
     at: 'test-tap/fixture/report/regular/test.cjs:22:4'
   ...
 ---tty-stream-chunk-separator
-not ok 15 - test › power-assert
-  ---
-    name: AssertionError
-    assertion: assert
-    operator: '!!'
-    values:
-      'Value is not truthy:': ''''''
-    at: 'test-tap/fixture/report/regular/test.cjs:27:4'
-  ...
----tty-stream-chunk-separator
-not ok 16 - test › bad throws
-  ---
-    name: AssertionError
-    message: Improper usage of `t.throws()` detected
-    assertion: throws
-    values:
-      'The following error was thrown, possibly before `t.throws()` could be called:': |-
-        Error {
-          message: 'err',
-        }
-    at: |-
-      fn (test-tap/fixture/report/regular/test.cjs:32:9)
-      test-tap/fixture/report/regular/test.cjs:35:11
-  ...
----tty-stream-chunk-separator
-not ok 17 - test › bad notThrows
-  ---
-    name: AssertionError
-    message: Improper usage of `t.notThrows()` detected
-    assertion: notThrows
-    values:
-      'The following error was thrown, possibly before `t.notThrows()` could be called:': |-
-        Error {
-          message: 'err',
-        }
-    at: |-
-      fn (test-tap/fixture/report/regular/test.cjs:40:9)
-      test-tap/fixture/report/regular/test.cjs:43:14
-  ...
----tty-stream-chunk-separator
-not ok 18 - test › implementation throws non-error
+not ok 15 - test › implementation throws non-error
   ---
     name: AssertionError
     message: Error thrown in test
@@ -184,7 +144,7 @@ not ok 18 - test › implementation throws non-error
     at: ''
   ...
 ---tty-stream-chunk-separator
-not ok 19 - traces-in-t-throws › throws
+not ok 16 - traces-in-t-throws › throws
   ---
     name: AssertionError
     assertion: throws
@@ -194,13 +154,16 @@ not ok 19 - traces-in-t-throws › throws
           message: 'uh-oh',
         }
       'Expected instance of:': 'Function TypeError {}'
-    at: |-
+    at: >-
       throwError (test-tap/fixture/report/regular/traces-in-t-throws.cjs:4:8)
-      test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17
+
+      t.throws.instanceOf
+      (test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:17)
+
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:12:4
   ...
 ---tty-stream-chunk-separator
-not ok 20 - traces-in-t-throws › notThrows
+not ok 17 - traces-in-t-throws › notThrows
   ---
     name: AssertionError
     assertion: notThrows
@@ -215,7 +178,7 @@ not ok 20 - traces-in-t-throws › notThrows
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:16:4
   ...
 ---tty-stream-chunk-separator
-not ok 21 - traces-in-t-throws › notThrowsAsync
+not ok 18 - traces-in-t-throws › notThrowsAsync
   ---
     name: AssertionError
     assertion: notThrowsAsync
@@ -230,7 +193,7 @@ not ok 21 - traces-in-t-throws › notThrowsAsync
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:20:4
   ...
 ---tty-stream-chunk-separator
-not ok 22 - traces-in-t-throws › throwsAsync
+not ok 19 - traces-in-t-throws › throwsAsync
   ---
     name: AssertionError
     assertion: throwsAsync
@@ -248,7 +211,7 @@ not ok 22 - traces-in-t-throws › throwsAsync
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:24:4
   ...
 ---tty-stream-chunk-separator
-not ok 23 - traces-in-t-throws › throwsAsync different error
+not ok 20 - traces-in-t-throws › throwsAsync different error
   ---
     name: AssertionError
     assertion: throwsAsync
@@ -265,9 +228,9 @@ not ok 23 - traces-in-t-throws › throwsAsync different error
       test-tap/fixture/report/regular/traces-in-t-throws.cjs:27:44
   ...
 ---tty-stream-chunk-separator
-ok 24 - uncaught-exception › passes
+ok 21 - uncaught-exception › passes
 ---tty-stream-chunk-separator
-not ok 25 - Error: Can’t catch me
+not ok 22 - Error: Can’t catch me
   ---
     name: Error
     message: Can’t catch me
@@ -276,30 +239,30 @@ not ok 25 - Error: Can’t catch me
       (test-tap/fixture/report/regular/uncaught-exception.cjs:5:9)
   ...
 ---tty-stream-chunk-separator
-not ok 26 - uncaught-exception.cjs exited with a non-zero exit code: 1
+not ok 23 - uncaught-exception.cjs exited with a non-zero exit code: 1
 ---tty-stream-chunk-separator
-ok 27 - unhandled-rejection › passes
+ok 24 - unhandled-rejection › passes
 ---tty-stream-chunk-separator
-ok 28 - unhandled-rejection › unhandled non-error rejection
+ok 25 - unhandled-rejection › unhandled non-error rejection
 ---tty-stream-chunk-separator
-not ok 29 - Error: Can’t catch me
+not ok 26 - Error: Can’t catch me
   ---
     name: Error
     message: Can’t catch me
     at: 'passes (test-tap/fixture/report/regular/unhandled-rejection.cjs:4:17)'
   ...
 ---tty-stream-chunk-separator
-not ok 30 - unhandled-rejection
+not ok 27 - unhandled-rejection
   ---
     message: Non-error object
     formatted: 'null'
   ...
 ---tty-stream-chunk-separator
 
-1..24
-# tests 23
+1..21
+# tests 20
 # pass 6
 # skip 1
-# fail 23
+# fail 20
 
 ---tty-stream-chunk-separator

test-tap/serialize-error.js

@@ -49,21 +49,6 @@ test('sets avaAssertionError to true if indeed an assertion error', t => {
 	t.end();
 });
 
-test('includes statements of assertion errors', t => {
-	const error = new avaAssert.AssertionError({
-		assertion: 'true',
-	});
-	error.statements = [
-		['actual.a[0]', '1'],
-		['actual.a', '[1]'],
-		['actual', '{a: [1]}'],
-	];
-
-	const serializedError = serialize(error);
-	t.equal(serializedError.statements, error.statements);
-	t.end();
-});
-
 test('includes values of assertion errors', t => {
 	const error = new avaAssert.AssertionError({
 		assertion: 'is',

test/extensions/fixtures/shared-duplicates/package.json

@@ -1,14 +1,18 @@
 {
 	"type": "module",
 	"ava": {
-		"babel": {
+		"typescript": {
+			"rewritePaths": {
+				"src/": "build/"
+			},
+			"compile": false,
 			"extensions": [
-				"js",
-				"jsx"
+				"ts",
+				"tsx"
 			]
 		},
 		"extensions": [
-			"jsx"
+			"tsx"
 		]
 	}
 }

test/extensions/snapshots/test.js.md

@@ -10,8 +10,8 @@ Generated by [AVA](https://avajs.dev).
 
     'Unexpected duplicate extensions in options: ’js’, ’jsx’.'
 
-## errors if top-level and babel extensions include duplicates
+## errors if top-level and typescript extensions include duplicates
 
 > fails with message
 
-    'Unexpected duplicate extensions in options: ’jsx’.'
+    'Unexpected duplicate extensions in options: ’tsx’.'

test/extensions/test.js

@@ -4,7 +4,7 @@ import {cleanOutput, cwd, fixture} from '../helpers/exec.js';
 
 for (const [where, which] of [
 	['top-level', 'top-level-duplicates'],
-	['top-level and babel', 'shared-duplicates'],
+	['top-level and typescript', 'shared-duplicates'],
 ]) {
 	test(`errors if ${where} extensions include duplicates`, async t => {
 		const options = {

types/assertions.d.ts

@@ -21,7 +21,7 @@ export type ThrowsExpectation = {
 export interface Assertions {
 	/**
 	 * Assert that `actual` is [truthy](https://developer.mozilla.org/en-US/docs/Glossary/Truthy), returning a boolean
-	 * indicating whether the assertion passed. Comes with power-assert.
+	 * indicating whether the assertion passed.
 	 */
 	assert: AssertAssertion;
 
@@ -123,7 +123,7 @@ export interface Assertions {
 export interface AssertAssertion {
 	/**
 	 * Assert that `actual` is [truthy](https://developer.mozilla.org/en-US/docs/Glossary/Truthy), returning a boolean
-	 * indicating whether the assertion passed. Comes with power-assert.
+	 * indicating whether the assertion passed.
 	 */
 	(actual: any, message?: string): boolean;