1 files changed, 126 insertions, 0 deletions

diff --git a/.eslintrc.cjs b/.eslintrc.cjs
new file mode 100644
index 0000000..92af738
--- /dev/null
+++ b/.eslintrc.cjs
@@ -0,0 +1,126 @@
+const project = [
+  './tsconfig.json',
+  './packages/*/tsconfig.json',
+];
+
+module.exports = {
+  root: true,
+  plugins: [
+    '@typescript-eslint',
+  ],
+  extends: [
+    'airbnb-base',
+    'airbnb-typescript/base',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:@typescript-eslint/recommended-requiring-type-checking',
+  ],
+  env: {
+    es6: true,
+    node: true,
+    browser: false,
+    jest: true,
+  },
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    sourceType: 'module',
+    project,
+    allowAutomaticSingleRunInference: true,
+    tsconfigRootDir: __dirname,
+    warnOnUnsupportedTypeScriptVersion: false,
+  },
+  settings: {
+    'import/parsers': {
+      '@typescript-eslint/parser': ['.ts', '.tsx'],
+    },
+    'import/resolver': {
+      typescript: {
+        alwaysTryTypes: true,
+        project,
+      },
+    },
+  },
+  rules: {
+    'import/no-unresolved': 'error',
+    'import/order': [
+      'error',
+      {
+        alphabetize: {
+          order: 'asc',
+        },
+        'newlines-between': 'always',
+      },
+    ],
+  },
+  overrides: [
+    {
+      files: [
+        '**/stores/**/*.ts',
+      ],
+      rules: {
+        // In a mobx-state-tree action, we assign to the properties of `self` to update the store.
+        'no-param-reassign': 'off',
+        // mobx-state-tree uses empty interfaces to speed up typechecking.
+        '@typescript-eslint/no-empty-interface': 'off',
+      },
+    },
+    {
+      files: [
+        '**/__tests__/*.{ts,tsx}',
+        '**/*.{spec,test}.{ts,tsx}',
+      ],
+      rules: {
+        // If a non-null assertion fails in a test, the test will also fail anyways.
+        '@typescript-eslint/no-non-null-assertion': 'off',
+        // Jest mocks use unbound method references.
+        '@typescript-eslint/unbound-method': 'off',
+      },
+    },
+    {
+      files: [
+        '**/*.js',
+      ],
+      rules: {
+        // ESM requires extensions for imports.
+        'import/extensions': [
+          'error',
+          'ignorePackages',
+        ],
+      },
+    },
+    {
+      files: [
+        '.electron-builder.config.cjs',
+        'config/**/*.{cjs,js}',
+        'jest.config.js',
+        'scripts/**/*.js',
+        'packages/*/*.config.js',
+      ],
+      env: {
+        // Config files are never run in a browser (even in frontend projects).
+        browser: false,
+        node: true,
+        jest: false,
+      },
+      rules: {
+        // Config files and build scripts are allowed to use devDependencies.
+        'import/no-extraneous-dependencies': [
+          'error',
+          {
+            devDependencies: true,
+          },
+        ],
+        // Allow reporting progress to the console from scripts.
+        'no-console': 'off',
+      },
+    },
+    {
+      files: [
+        'packages/*/*.config.js',
+      ],
+      rules: {
+        // Allow relative imports of config files from the root package.
+        'import/no-relative-packages': 'off',
+      },
+    },
+  ],
+};