chore: switch tooling to npm, with [email protected]

Author: JoshuaKGoldberg

.github/DEVELOPMENT.md

@@ -1,11 +1,11 @@
 # Development
 
-After [forking the repo from GitHub](https://help.github.com/articles/fork-a-repo) and [installing Yarn](https://yarnpkg.com/getting-started):
+After [forking the repo from GitHub](https://help.github.com/articles/fork-a-repo) and [installing Node.js](https://nodejs.org):
 
 ```shell
 git clone https://github.com/ < your-name-here > /performance
 cd performance
-yarn install
+npm install
 ```
 
 > This repository includes a list of suggested VS Code extensions.
@@ -19,23 +19,23 @@ It should be applied automatically when you save files in VS Code or make a Git
 To manually reformat all files, you can run:
 
 ```shell
-yarn format --write
+npm run format -- --write
 ```
 
 ## Linting
 
 This package includes several forms of linting to enforce consistent code quality and styling.
 Each should be shown in VS Code, and can be run manually on the command-line:
 
-- `yarn lint` ([ESLint](https://eslint.org) with [typescript-eslint](https://typescript-eslint.io)): Lints JavaScript and TypeScript source files
-- `yarn lint:knip` ([knip](https://github.com/webpro/knip)): Detects unused files, dependencies, and code exports
-- `yarn lint:md` ([Markdownlint](https://github.com/DavidAnson/markdownlint): Checks Markdown source files
-- `yarn lint:spelling` ([cspell](https://cspell.org)): Spell checks across all source files
+- `npm lint` ([ESLint](https://eslint.org) with [typescript-eslint](https://typescript-eslint.io)): Lints JavaScript and TypeScript source files
+- `npm lint:knip` ([knip](https://github.com/webpro/knip)): Detects unused files, dependencies, and code exports
+- `npm lint:md` ([Markdownlint](https://github.com/DavidAnson/markdownlint): Checks Markdown source files
+- `npm lint:spelling` ([cspell](https://cspell.org)): Spell checks across all source files
 
 Read the individual documentation for each linter to understand how it can be configured and used best.
 
 For example, ESLint can be run with `--fix` to auto-fix some lint rule complaints:
 
 ```shell
-yarn run lint --fix
+npm run lint -- --fix
 ```

.github/actions/prepare/action.yml

@@ -6,8 +6,7 @@ runs:
   steps:
     - uses: actions/setup-node@v4
       with:
-        cache: yarn
         node-version: "20"
-    - run: yarn install
+    - run: npm install
       shell: bash
   using: composite

.github/workflows/lint-knip.yml

@@ -4,7 +4,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/prepare
-      - run: yarn lint:knip
+      - run: npm run lint:knip
 
 name: Lint Knip
 

.github/workflows/lint-markdown.yml

@@ -4,7 +4,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/prepare
-      - run: yarn lint:md
+      - run: npm run lint:md
 
 name: Lint Markdown
 

.github/workflows/lint-spelling.yml

@@ -4,7 +4,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/prepare
-      - run: yarn lint:spelling
+      - run: npm run lint:spelling
 
 name: Lint spelling
 

.github/workflows/lint.yml

@@ -4,7 +4,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/prepare
-      - run: yarn lint
+      - run: npm run lint
 
 name: Lint
 

.github/workflows/prettier.yml

@@ -4,7 +4,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/prepare
-      - run: yarn format --list-different
+      - run: npm run format -- --list-different
 
 name: Prettier
 

.github/workflows/tsc.yml

@@ -4,7 +4,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/prepare
-      - run: yarn tsc
+      - run: npm run tsc
 
 name: Type Check
 

.gitignore

@@ -1,8 +1,3 @@
-!.yarn/patches
-!.yarn/plugins
-!.yarn/releases
-!.yarn/sdks
-!.yarn/versions
-.yarn/*
 cases/
 node_modules/
+package-lock.json

.prettierignore

@@ -1,4 +1,3 @@
 .all-contributorsrc
 .husky/
 cases/
-yarn.yaml

.yarn/install-state.gz

@@ -16,9 +16,9 @@
 ## Usage
 
 ```shell
-yarn
-yarn generate
-yarn measure
+npm install
+npm generate
+npm measure
 ```
 
 ## Contributors

.yarnrc.yml

@@ -1,5 +1,5 @@
 {
 	"dictionaries": ["typescript"],
-	"ignorePaths": [".github", "node_modules", "yarn.yaml"],
+	"ignorePaths": [".github", "cases", "node_modules"],
 	"words": ["execa", "knip", "packagejson", "tseslint"]
 }

README.md

@@ -12,7 +12,7 @@ import tseslint from "typescript-eslint";
 
 export default tseslint.config(
 	{
-		ignores: ["cases", "node_modules", "projects", "yarn.yaml", ".yarn"],
+		ignores: ["cases", "node_modules", "projects"],
 	},
 	{
 		linterOptions: {
@@ -38,7 +38,7 @@ export default tseslint.config(
 		files: ["**/*.js", "**/*.ts"],
 		languageOptions: {
 			parserOptions: {
-				EXPERIMENTAL_useProjectService: {
+				projectService: {
 					allowDefaultProjectForFiles: ["./*.*s", "eslint.config.js"],
 					defaultProject: "./tsconfig.json",
 				},

cspell.json

@@ -67,13 +67,15 @@
 		"sentences-per-line": "^0.2.1",
 		"tsx": "^4.16.2",
 		"typescript": "^5.5.3",
-		"typescript-eslint": "^7.16.0"
+		"typescript-eslint": "8.0.0-alpha.44"
 	},
-	"packageManager": "[email protected]",
 	"engines": {
 		"node": ">=22"
 	},
 	"publishConfig": {
 		"provenance": true
+	},
+	"overrides": {
+		"@typescript-eslint/utils": "8.0.0-alpha.44"
 	}
 }

eslint.config.js

@@ -81,6 +81,6 @@ for (const files of caseEntries[0].values) {
 	}
 }
 
-await execa({ stdio: "inherit" })`yarn`;
+await execa({ stdio: "inherit" })`npm install`;
 
 console.log("Seeded cases.");

package.json

@@ -14,7 +14,7 @@ async function runProjectLint(data: CaseData) {
 		cwd: path.join(casesPath, projectName),
 		reject: false,
 	})(`hyperfine`, [
-		"yarn lint",
+		"npm run lint",
 		"--ignore-failure",
 		"--show-output",
 		"--warmup",
@@ -23,10 +23,11 @@ async function runProjectLint(data: CaseData) {
 
 	if (result.exitCode) {
 		console.log(result.stderr);
+		console.log({ result });
 	}
 
 	return (
-		result.stdout.match(/[0-9.]+\s+\S+\s+±\s+[0-9.]+\s+\S+/)?.[0] ??
+		/[0-9.]+\s+\S+\s+±\s+[0-9.]+\s+\S+/.exec(result.stdout)?.[0] ??
 		result.stdout
 	);
 }