chore: upgrade to Prettier v3

Author: G-Rath

package-lock.json

@@ -74,7 +74,6 @@
 		"eslint-plugin-jest": "^27.2.1",
 		"eslint-plugin-jest-formatting": "^3.1.0",
 		"eslint-plugin-node": "^11.1.0",
-		"eslint-plugin-prettier": "^4.2.1",
 		"eslint-plugin-promise": "^6.1.1",
 		"eslint-remote-tester": "^3.0.0",
 		"eslint-remote-tester-repositories": "^1.0.1",
@@ -83,7 +82,7 @@
 		"jest": "^28.1.3",
 		"lint-staged": "^13.2.1",
 		"npm-run-all": "^4.1.5",
-		"prettier": "2.8.7",
+		"prettier": "^3.3.3",
 		"semantic-release": "^19.0.5",
 		"ts-node": "^10.9.1",
 		"typescript": "^5.0.4"

package.json

@@ -11,7 +11,7 @@ import { LinterConfig, writeConfig } from './utils';
 const RULE_NAME_PREFIX = 'testing-library/';
 
 const getRecommendedRulesForTestingFramework = (
-	framework: SupportedTestingFramework
+	framework: SupportedTestingFramework,
 ): Record<string, TSESLint.Linter.RuleEntry> =>
 	Object.entries(rules)
 		.filter(
@@ -20,7 +20,7 @@ const getRecommendedRulesForTestingFramework = (
 				{
 					meta: { docs },
 				},
-			]) => Boolean(docs.recommendedConfig[framework])
+			]) => Boolean(docs.recommendedConfig[framework]),
 		)
 		.reduce((allRules, [ruleName, { meta }]) => {
 			const name = `${RULE_NAME_PREFIX}${ruleName}`;
@@ -32,11 +32,16 @@ const getRecommendedRulesForTestingFramework = (
 			};
 		}, {});
 
-SUPPORTED_TESTING_FRAMEWORKS.forEach((framework) => {
-	const specificFrameworkConfig: LinterConfig = {
-		plugins: ['testing-library'],
-		rules: getRecommendedRulesForTestingFramework(framework),
-	};
+(async () => {
+	for (const framework of SUPPORTED_TESTING_FRAMEWORKS) {
+		const specificFrameworkConfig: LinterConfig = {
+			plugins: ['testing-library'],
+			rules: getRecommendedRulesForTestingFramework(framework),
+		};
 
-	writeConfig(specificFrameworkConfig, framework);
+		await writeConfig(specificFrameworkConfig, framework);
+	}
+})().catch((error) => {
+	console.error(error);
+	process.exitCode = 1;
 });

tools/generate-configs/index.ts

@@ -1,10 +1,10 @@
-import { writeFileSync } from 'fs';
+import { writeFile } from 'fs/promises';
 import { resolve } from 'path';
 
 import { type TSESLint } from '@typescript-eslint/utils';
 import { format, resolveConfig } from 'prettier';
 
-const prettierConfig = resolveConfig.sync(__dirname);
+const prettierConfig = resolveConfig(__dirname);
 
 export type LinterConfig = TSESLint.Linter.Config;
 
@@ -20,14 +20,17 @@ const addAutoGeneratedComment = (code: string) =>
 /**
  * Helper function writes configuration.
  */
-export const writeConfig = (config: LinterConfig, configName: string): void => {
+export const writeConfig = async (
+	config: LinterConfig,
+	configName: string,
+): Promise<void> => {
 	// note: we use `export =` because ESLint will import these configs via a commonjs import
 	const code = `export = ${JSON.stringify(config)};`;
-	const configStr = format(addAutoGeneratedComment(code), {
+	const configStr = await format(addAutoGeneratedComment(code), {
 		parser: 'typescript',
-		...prettierConfig,
+		...(await prettierConfig),
 	});
 	const filePath = resolve(__dirname, `../../lib/configs/${configName}.ts`);
 
-	writeFileSync(filePath, configStr);
+	await writeFile(filePath, configStr);
 };