test(linter/plugins): add eslint-stylistic to conformance tests

apps/oxlint/conformance/init.sh

@@ -3,6 +3,7 @@ set -e
 
 ESLINT_SHA="8f360ad6a7a743d33a83eed8973ee4a50731e55b" # 10.0.0-rc.0
 REACT_SHA="612e371fb215498edde4c853bd1e0c8e9203808f" # 19.2.3
+STYLISTIC_SHA="5c4b512a225a314fa5f41eead9fdc4d51fc243d7" # 5.7.1
 
 # Shallow clone a repo at a specific commit.
 # Git commands copied from `.github/scripts/clone-parallel.mjs`.
@@ -60,3 +61,62 @@ yarn add eslint-plugin-react-hooks
 
 # Return to `submodules` directory
 cd ../../..
+
+###############################################################################
+# Stylistic
+###############################################################################
+
+# Clone ESLint Stylistic repo into `submodules/stylistic`
+clone stylistic https://github.com/eslint-stylistic/eslint-stylistic.git "$STYLISTIC_SHA"
+
+# Install dependencies.
+# No `--ignore-workspace` because `eslint-stylistic` has its own `pnpm-workspace.yaml`.
+pnpm install
+
+# Patch `package.json` files to add Node.js subpath imports.
+# ESLint Stylistic uses TypeScript `paths` in `tsconfig.base.json` (e.g. `#test`),
+# but Node/tsx doesn't respect tsconfig paths. It needs `imports` in `package.json`.
+#
+# Read path aliases from `tsconfig.base.json` and add them to `package.json` as `imports`.
+node -e '
+const fs = require("fs");
+const path = require("path");
+
+const pluginPkgPath = path.resolve("packages/eslint-plugin/package.json");
+const pluginPkg = JSON.parse(fs.readFileSync(pluginPkgPath, "utf8"));
+
+// Read path aliases from `tsconfig.base.json`
+const tsconfig = JSON.parse(fs.readFileSync("tsconfig.base.json", "utf8"));
+const tsPaths = tsconfig.compilerOptions.paths;
+
+// Convert tsconfig paths format to package.json imports format
+// tsconfig: { "#test": ["./shared/test-utils/index.ts"] }
+// package.json: { "#test": "./shared/test-utils/index.ts" }
+pluginPkg.imports = Object.fromEntries(
+  Object.entries(tsPaths).map(([alias, targets]) => [alias, targets[0]]),
+);
+
+fs.writeFileSync(pluginPkgPath, JSON.stringify(pluginPkg, null, 2) + "\n");
+'
+
+# Node.js resolves `imports` from the nearest `package.json` with a `name` field,
+# and subpath imports can only reference files within the package (no `../` allowed).
+# So create a symlink to the `shared` directory within the `eslint-plugin` package.
+ln -s ../../shared packages/eslint-plugin/shared
+
+# Replace top-level await imports in `parsers-jsx.ts` with regular imports.
+# `tsx` does not support TLA with CJS output format.
+if [[ "$OSTYPE" == darwin* ]]; then
+  sed -i '' '/^export const.*= await import/d' shared/test-utils/parsers-jsx.ts
+else
+  sed -i '/^export const.*= await import/d' shared/test-utils/parsers-jsx.ts
+fi
+
+cat >> shared/test-utils/parsers-jsx.ts << 'EOF'
+import BABEL_ESLINT from '@babel/eslint-parser';
+import TYPESCRIPT_ESLINT from '@typescript-eslint/parser';
+export { BABEL_ESLINT, TYPESCRIPT_ESLINT };
+EOF
+
+# Return to `submodules` directory
+cd ..