Add ESLint config

1 files changed, 30 insertions, 0 deletions

diff --git a/language-web/.eslintrc.js b/language-web/.eslintrc.js
new file mode 100644
index 00000000..bf421f9d
--- /dev/null
+++ b/language-web/.eslintrc.js
@@ -0,0 +1,30 @@
+// Loosely based on
+// https://github.com/iamturns/create-exposed-app/blob/f14e435b8ce179c89cce3eea89e56202153a53da/.eslintrc.js
+module.exports = {
+  plugins: [
+    '@typescript-eslint',
+  ],
+  extends: [
+    'airbnb',
+    'airbnb-typescript',
+    'airbnb/hooks',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:@typescript-eslint/recommended-requiring-type-checking',
+  ],
+  parserOptions: {
+    project: './tsconfig.json',
+  },
+  rules: {
+    // https://basarat.gitbooks.io/typescript/docs/tips/defaultIsBad.html
+    'import/prefer-default-export': 'off',
+    'import/no-default-export': 'error',
+    // propTypes are for runtime validation, but we rely on TypeScript for build-time validation:
+    // https://github.com/yannickcr/eslint-plugin-react/issues/2275#issuecomment-492003857
+    'react/prop-types': 'off',
+  },
+  ignorePatterns: [
+    '*.js',
+    'build/**/*',
+    'src/main/js/xtext/**/*',
+  ],
+};