Update dependencies and such

* Update dev dependencies

* Test with TypeScript 4.2

* Upgrade to XO 0.38

* Update dependencies

* Rebuild lockfile

* Assume npm 7.6.3

Author: novemberborn

.github/workflows/ci.yml

@@ -43,7 +43,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ts-version: [~4.1]
+        ts-version: [~4.2]
     steps:
       - uses: actions/checkout@v2
         with:
@@ -71,7 +71,7 @@ jobs:
         with:
           node-version: ^12.20
       - name: Upgrade npm
-        run: if [[ "$(npm -v)" != "7.5.2" ]]; then npm install --global npm@7.5.2; fi
+        run: if [[ "$(npm -v)" != "7.6.3" ]]; then npm install --global npm@7.6.3; fi
       - run: npm ci --no-audit
       - name: Test package-lock for unexpected modifications
         run: |

docs/recipes/typescript.md

@@ -4,7 +4,7 @@ Translations: [Español](https://github.com/avajs/ava-docs/blob/master/es_ES/doc
 
 AVA comes bundled with a TypeScript definition file. This allows developers to leverage TypeScript for writing tests.
 
-This guide assumes you've already set up TypeScript for your project. Note that AVA 3's definition expects at least version 3.7.5. AVA 4 will require at least version 4.1.
+This guide assumes you've already set up TypeScript for your project. Note that AVA 3's definition expects at least version 3.7.5. AVA 4 will require at least version 4.2.
 
 ## Enabling AVA's support for TypeScript test files
 

lib/line-numbers.js

@@ -17,7 +17,7 @@ const sortNumbersAscending = array => {
 
 const parseNumber = string => Number.parseInt(string, 10);
 const removeAllWhitespace = string => string.replace(/\s/g, '');
-const range = (start, end) => new Array(end - start + 1).fill(start).map((element, index) => element + index);
+const range = (start, end) => Array.from({length: end - start + 1}).fill(start).map((element, index) => element + index);
 
 const parseLineNumbers = suffix => sortNumbersAscending(distinctArray(flatten(
 	suffix.split(',').map(part => {

lib/runner.js

@@ -281,7 +281,7 @@ class Runner extends Emittery {
 			failWithoutAssertions: false,
 			fn: task.args.length === 0 ?
 				task.implementation :
-				t => task.implementation.apply(null, [t].concat(task.args)),
+				t => Reflect.apply(task.implementation, null, [t, ...task.args]),
 			compareTestSnapshot: this.boundCompareTestSnapshot,
 			skipSnapshot: this.boundSkipSnapshot,
 			updateSnapshots: this.updateSnapshots,
@@ -333,7 +333,7 @@ class Runner extends Emittery {
 				failWithoutAssertions: this.failWithoutAssertions,
 				fn: task.args.length === 0 ?
 					task.implementation :
-					t => task.implementation.apply(null, [t].concat(task.args)),
+					t => Reflect.apply(task.implementation, null, [t, ...task.args]),
 				compareTestSnapshot: this.boundCompareTestSnapshot,
 				skipSnapshot: this.boundSkipSnapshot,
 				updateSnapshots: this.updateSnapshots,

lib/scheduler.js

@@ -30,15 +30,15 @@ module.exports.failingTestsFirst = (selectedFiles, cacheDir, cacheEnabled) => {
 	}
 
 	return [...selectedFiles].sort((f, s) => {
-		if (failedTestFiles.some(tf => tf === f) && failedTestFiles.some(tf => tf === s)) {
+		if (failedTestFiles.includes(f) && failedTestFiles.includes(s)) {
 			return 0;
 		}
 
-		if (failedTestFiles.some(tf => tf === f)) {
+		if (failedTestFiles.includes(f)) {
 			return -1;
 		}
 
-		if (failedTestFiles.some(tf => tf === s)) {
+		if (failedTestFiles.includes(s)) {
 			return 1;
 		}
 

lib/watcher.js

@@ -105,7 +105,7 @@ class Watcher {
 					// The test files that previously contained exclusive tests are always
 					// run, together with the remaining specific files.
 					const remainingFiles = diff(specificFiles, exclusiveFiles);
-					specificFiles = this.filesWithExclusiveTests.concat(remainingFiles);
+					specificFiles = [...this.filesWithExclusiveTests, ...remainingFiles];
 				}
 
 				if (filter.length > 0) {
@@ -440,7 +440,7 @@ class Watcher {
 		}
 
 		// Run all affected tests
-		this.run([...new Set(addedOrChangedTests.concat(flatten(testsByHelpersOrSource)))]);
+		this.run([...new Set([...addedOrChangedTests, ...flatten(testsByHelpersOrSource)])]);
 	}
 }
 

lib/worker/base.js

@@ -117,11 +117,9 @@ const run = async options => {
 		}
 
 		nowAndTimers.setImmediate(() => {
-			currentlyUnhandled()
-				.filter(rejection => !attributedRejections.has(rejection.promise))
-				.forEach(rejection => {
-					channel.send({type: 'unhandled-rejection', err: serializeError('Unhandled rejection', true, rejection.reason, runner.file)});
-				});
+			for (const rejection of currentlyUnhandled().filter(rejection => !attributedRejections.has(rejection.promise))) {
+				channel.send({type: 'unhandled-rejection', err: serializeError('Unhandled rejection', true, rejection.reason, runner.file)});
+			}
 
 			exit(0);
 		});

lib/worker/line-numbers.js

@@ -49,7 +49,7 @@ function findTest(locations, declaration) {
 	return spans.pop();
 }
 
-const range = (start, end) => new Array(end - start + 1).fill(start).map((element, index) => element + index);
+const range = (start, end) => Array.from({length: end - start + 1}).fill(start).map((element, index) => element + index);
 
 module.exports = ({file, lineNumbers = []}) => {
 	if (lineNumbers.length === 0) {