Revert 09c36781 & tweak linting (#1501)

This diff reverts 09c36781 and tweaks how some of our linting was
working.

I'm not actually sure what caused the regression that 09c36781 was
fixing - it was something to do with typescript being used to transpile
eslintrc.js, but that being excluded from the tsconfig for those
projects. I fixed that by removing `rootDir` from those, but that
revealed some other issues with files not getting ignored correctly.

I fixed the ignoring issue with a change I've wanted to make to these
scripts for a while: only running them on files that are actually
tracked by git, instead of on everything with a relevant extension. A
side effect of that is that we have to re-implement .eslintignore
support ourselves, but that's very straight forward: the `ignore`
package that eslint uses is very easy to include.

### Change Type
- [x] `internal` — Any other changes that don't affect the published
package (will not publish a new version)

### Test Plan
-

### Release Notes
[internal-only]

.prettierignore

@@ -10,8 +10,6 @@
 *.mdx
 **/_archive/*
 apps/docs/content.json
-apps/vscode/extension/editor/index.js
-apps/vscode/extension/editor/tldraw-assets.json
 apps/webdriver/www/index.js
 apps/vscode/extension/editor/*
 apps/examples/www

apps/vscode/editor/package.json

@@ -30,7 +30,7 @@
 		"build": "yarn run -T tsx scripts/build.ts",
 		"dev": "yarn run -T tsx scripts/dev.ts",
 		"clean": "rm -rf .turbo && rm -rf node_modules && rm -rf dist",
-		"lint": "yarn run -T eslint --report-unused-disable-directives --ignore-path ../../../.eslintignore"
+		"lint": "yarn run -T tsx ../../../scripts/lint.ts"
 	},
 	"devDependencies": {
 		"@tldraw/assets": "workspace:*",

apps/vscode/editor/tsconfig.json

@@ -21,8 +21,7 @@
 		"composite": true,
 		"importHelpers": false,
 		"skipDefaultLibCheck": true,
-		"experimentalDecorators": true,
-		"rootDir": ".."
+		"experimentalDecorators": true
 	},
 	"include": ["src", "../messages", "scripts", "../vscode-script-utils"],
 	"references": [

apps/vscode/extension/package.json

@@ -126,7 +126,7 @@
 		"build": "cd ../editor && yarn build && cd ../extension && tsx scripts/build.ts",
 		"package": "yarn build && tsx scripts/package.ts",
 		"publish": "vsce publish",
-		"lint": "yarn run -T eslint --report-unused-disable-directives --ignore-path ../../../.eslintignore",
+		"lint": "yarn run -T tsx ../../../scripts/lint.ts",
 		"clean": "rm -rf .turbo && rm -rf node_modules && rm -rf dist && rm -rf editor && rm -rf temp & yarn"
 	},
 	"devDependencies": {

apps/vscode/extension/tsconfig.json

@@ -21,8 +21,7 @@
 		"composite": true,
 		"importHelpers": false,
 		"skipDefaultLibCheck": true,
-		"experimentalDecorators": true,
-		"rootDir": ".."
+		"experimentalDecorators": true
 	},
 	"include": ["src", "../messages", "scripts", "../vscode-script-utils"],
 	"references": [{ "path": "../../../packages/file-format" }]

public-yarn.lock

@@ -4457,6 +4457,7 @@ __metadata:
     cross-fetch: ^3.1.5
     esbuild: ^0.16.7
     glob: ^8.0.3
+    ignore: ^5.2.4
     is-ci: ^3.0.1
     kleur: ^4.1.5
     lazyrepo: 0.0.0-alpha.26
@@ -10578,7 +10579,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ignore@npm:^5.1.1, ignore@npm:^5.2.0":
+"ignore@npm:^5.1.1, ignore@npm:^5.2.0, ignore@npm:^5.2.4":
   version: 5.2.4
   resolution: "ignore@npm:5.2.4"
   checksum: 3d4c309c6006e2621659311783eaea7ebcd41fe4ca1d78c91c473157ad6666a57a2df790fe0d07a12300d9aac2888204d7be8d59f9aaf665b1c7fcdb432517ef

scripts/check-scripts.ts

@@ -63,14 +63,6 @@ const perPackageExceptions: Record<string, Record<string, () => string | undefin
 		prepack: () => undefined,
 		postpack: () => undefined,
 	},
-	'tldraw-vscode': {
-		lint: () =>
-			'yarn run -T eslint --report-unused-disable-directives --ignore-path ../../../.eslintignore',
-	},
-	'@tldraw/vscode-editor': {
-		lint: () =>
-			'yarn run -T eslint --report-unused-disable-directives --ignore-path ../../../.eslintignore',
-	},
 }
 
 async function main({ fix }: { fix?: boolean }) {

scripts/lint.ts

@@ -1,33 +1,68 @@
-import { join, relative } from 'path'
-
+import ignore from 'ignore'
+import * as path from 'path'
 import { exec } from './lib/exec'
-import { REPO_ROOT } from './lib/file'
+import { REPO_ROOT, readFileIfExists } from './lib/file'
+
+const ESLINT_EXTENSIONS = ['js', 'jsx', 'ts', 'tsx']
+const PRETTIER_EXTENSIONS = ['js', 'jsx', 'ts', 'tsx', 'json']
 
 async function main() {
 	const shouldFix = process.argv.includes('--fix')
 
+	const lsFiles = await exec('git', ['ls-files', '.'], {
+		processStdoutLine: () => {
+			// don't print anything
+		},
+	})
+
+	const filesByExtension = new Map<string, string[]>()
+	for (const file of lsFiles.trim().split('\n')) {
+		const ext = file.split('.').pop()
+		if (!ext) continue
+		let files = filesByExtension.get(ext)
+		if (!files) {
+			files = []
+			filesByExtension.set(ext.toLowerCase(), files)
+		}
+		files.push(file)
+	}
+
+	let prettierFiles = PRETTIER_EXTENSIONS.flatMap((ext) => filesByExtension.get(ext) ?? [])
+	let eslintFiles = ESLINT_EXTENSIONS.flatMap((ext) => filesByExtension.get(ext) ?? [])
+
+	const relativeCwd = path.relative(REPO_ROOT, process.cwd())
+
+	const prettierIgnoreFile = await readFileIfExists(path.join(REPO_ROOT, '.prettierignore'))
+	if (prettierIgnoreFile) {
+		prettierFiles = prettierFiles
+			.map((f) => path.join(relativeCwd, f))
+			.filter(ignore().add(prettierIgnoreFile).createFilter())
+			.map((f) => path.relative(relativeCwd, f))
+	}
+
+	const eslintIgnoreFile = await readFileIfExists(path.join(REPO_ROOT, '.eslintignore'))
+	if (eslintIgnoreFile) {
+		eslintFiles = eslintFiles
+			.map((f) => path.join(relativeCwd, f))
+			.filter(ignore().add(eslintIgnoreFile).createFilter())
+			.map((f) => path.relative(relativeCwd, f))
+	}
+
 	try {
-		await exec(
-			'yarn',
-			[
+		await exec('yarn', [
 			'run',
 			'-T',
 			'prettier',
 			shouldFix ? '--write' : '--check',
-				// we have to run prettier from root so it picks up the ignore file
-				join(relative(REPO_ROOT, process.cwd()), '**', '*.{ts,tsx,js,jsx,json}'),
-			],
-			{ pwd: REPO_ROOT }
-		)
+			...prettierFiles,
+		])
 		await exec('yarn', [
 			'run',
 			'-T',
 			'eslint',
 			'--report-unused-disable-directives',
-			'--ignore-path',
-			join(REPO_ROOT, '.eslintignore'),
 			shouldFix ? '--fix' : null,
-			'.',
+			...eslintFiles,
 		])
 	} catch (error) {
 		process.exit(1)

scripts/package.json

@@ -47,5 +47,8 @@
 	},
 	"scripts": {
 		"lint": "yarn run -T tsx lint.ts"
+	},
+	"dependencies": {
+		"ignore": "^5.2.4"
 	}
 }