diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 0000000..ee37b89
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,290 @@
+const { join } = require('node:path');
+
+const createPattern = packageName => [
+  {
+    group: ['**/dist', '**/dist/**'],
+    message: 'Do not import from dist',
+    allowTypeImports: false,
+  },
+  {
+    group: ['**/src', '**/src/**'],
+    message: 'Do not import from src',
+    allowTypeImports: false,
+  },
+  {
+    group: [`@solus/${packageName}`],
+    message: 'Do not import package itself',
+    allowTypeImports: false,
+  },
+  {
+    group: [`@toeverything/${packageName}`],
+    message: 'Do not import package itself',
+    allowTypeImports: false,
+  },
+  {
+    group: ['@blocksuite/store'],
+    message: "Import from '@blocksuite/global/utils'",
+    importNames: ['assertExists', 'assertEquals'],
+  },
+  {
+    group: ['react-router-dom'],
+    message: 'Use `useNavigateHelper` instead',
+    importNames: ['useNavigate'],
+  },
+  {
+    group: ['@solus/env/constant'],
+    message:
+      'Do not import from @solus/env/constant. Use `environment.isDesktop` instead',
+    importNames: ['isDesktop'],
+  },
+];
+
+const allPackages = [
+  'packages/backend/server',
+  'packages/frontend/component',
+  'packages/frontend/core',
+  'packages/frontend/electron',
+  'packages/frontend/graphql',
+  'packages/frontend/i18n',
+  'packages/frontend/native',
+  'packages/frontend/templates',
+  'packages/common/debug',
+  'packages/common/env',
+  'packages/common/infra',
+  'packages/common/theme',
+  'tools/cli',
+];
+
+/**
+ * @type {import('eslint').Linter.Config}
+ */
+const config = {
+  root: true,
+  settings: {
+    react: {
+      version: 'detect',
+    },
+    next: {
+      rootDir: 'packages/frontend/core',
+    },
+  },
+  extends: [
+    'eslint:recommended',
+    'plugin:react-hooks/recommended',
+    'plugin:react/recommended',
+    'plugin:react/jsx-runtime',
+    'plugin:@typescript-eslint/recommended',
+    'prettier',
+  ],
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    ecmaFeatures: {
+      globalReturn: false,
+      impliedStrict: true,
+      jsx: true,
+    },
+    ecmaVersion: 'latest',
+    sourceType: 'module',
+    project: join(__dirname, 'tsconfig.eslint.json'),
+  },
+  plugins: [
+    'react',
+    '@typescript-eslint',
+    'simple-import-sort',
+    'sonarjs',
+    'import-x',
+    'unused-imports',
+    'unicorn',
+    'rxjs',
+  ],
+  rules: {
+    'array-callback-return': 'error',
+    'no-undef': 'off',
+    'no-empty': 'off',
+    'no-func-assign': 'off',
+    'no-cond-assign': 'off',
+    'no-constant-binary-expression': 'error',
+    'no-constructor-return': 'error',
+    'no-self-compare': 'error',
+    eqeqeq: ['error', 'always', { null: 'ignore' }],
+    'react/prop-types': 'off',
+    'react/jsx-no-useless-fragment': 'error',
+    '@typescript-eslint/consistent-type-imports': 'error',
+    '@typescript-eslint/no-non-null-assertion': 'error',
+    '@typescript-eslint/no-explicit-any': 'off',
+    '@typescript-eslint/no-empty-function': 'off',
+    '@typescript-eslint/await-thenable': 'error',
+    '@typescript-eslint/require-array-sort-compare': 'error',
+    '@typescript-eslint/unified-signatures': 'error',
+    '@typescript-eslint/prefer-for-of': 'error',
+    '@typescript-eslint/no-unused-vars': [
+      'error',
+      {
+        varsIgnorePattern: '^_',
+        argsIgnorePattern: '^_',
+        caughtErrorsIgnorePattern: '^_',
+      },
+    ],
+    'unused-imports/no-unused-imports': 'error',
+    'simple-import-sort/imports': 'error',
+    'simple-import-sort/exports': 'error',
+    'import-x/no-duplicates': 'error',
+    '@typescript-eslint/ban-ts-comment': [
+      'error',
+      {
+        'ts-expect-error': 'allow-with-description',
+        'ts-ignore': true,
+        'ts-nocheck': true,
+        'ts-check': false,
+      },
+    ],
+    '@typescript-eslint/no-restricted-imports': [
+      'error',
+      {
+        patterns: [
+          {
+            group: ['**/dist'],
+            message: "Don't import from dist",
+            allowTypeImports: false,
+          },
+          {
+            group: ['**/src'],
+            message: "Don't import from src",
+            allowTypeImports: false,
+          },
+          {
+            group: ['@blocksuite/store'],
+            message: "Import from '@blocksuite/global/utils'",
+            importNames: ['assertExists', 'assertEquals'],
+          },
+          {
+            group: ['react-router-dom'],
+            message: 'Use `useNavigateHelper` instead',
+            importNames: ['useNavigate'],
+          },
+        ],
+      },
+    ],
+    'unicorn/filename-case': [
+      'error',
+      {
+        case: 'kebabCase',
+        ignore: ['^\\[[a-zA-Z0-9-_]+\\]\\.tsx$'],
+      },
+    ],
+    'unicorn/no-unnecessary-await': 'error',
+    'unicorn/no-useless-fallback-in-spread': 'error',
+    'unicorn/prefer-dom-node-dataset': 'error',
+    'unicorn/prefer-dom-node-append': 'error',
+    'unicorn/prefer-dom-node-remove': 'error',
+    'unicorn/prefer-array-some': 'error',
+    'unicorn/prefer-date-now': 'error',
+    'unicorn/prefer-blob-reading-methods': 'error',
+    'unicorn/no-typeof-undefined': 'error',
+    'unicorn/no-useless-promise-resolve-reject': 'error',
+    'unicorn/no-new-array': 'error',
+    'unicorn/new-for-builtins': 'error',
+    'unicorn/prefer-node-protocol': 'error',
+    'sonarjs/no-all-duplicated-branches': 'error',
+    'sonarjs/no-element-overwrite': 'error',
+    'sonarjs/no-empty-collection': 'error',
+    'sonarjs/no-extra-arguments': 'error',
+    'sonarjs/no-identical-conditions': 'error',
+    'sonarjs/no-identical-expressions': 'error',
+    'sonarjs/no-ignored-return': 'error',
+    'sonarjs/no-one-iteration-loop': 'error',
+    'sonarjs/no-use-of-empty-return-value': 'error',
+    'sonarjs/non-existent-operator': 'error',
+    'sonarjs/no-collapsible-if': 'error',
+    'sonarjs/no-same-line-conditional': 'error',
+    'sonarjs/no-duplicated-branches': 'error',
+    'sonarjs/no-collection-size-mischeck': 'error',
+    'sonarjs/no-useless-catch': 'error',
+    'sonarjs/no-identical-functions': 'error',
+    'rxjs/finnish': [
+      'error',
+      {
+        functions: false,
+        methods: false,
+        strict: true,
+        types: {
+          '^LiveData$': true,
+          // some yjs classes are Observables, but they don't need to be in Finnish notation
+          '^Doc$': false, // yjs Doc
+          '^Awareness$': false, // yjs Awareness
+          '^UndoManager$': false, // yjs UndoManager
+        },
+      },
+    ],
+  },
+  overrides: [
+    {
+      files: 'packages/backend/server/**/*.ts',
+      rules: {
+        '@typescript-eslint/consistent-type-imports': 0,
+      },
+    },
+    {
+      files: '*.cjs',
+      rules: {
+        '@typescript-eslint/no-var-requires': 0,
+      },
+    },
+    ...allPackages.map(pkg => ({
+      files: [`${pkg}/src/**/*.ts`, `${pkg}/src/**/*.tsx`, `${pkg}/**/*.mjs`],
+      rules: {
+        '@typescript-eslint/no-restricted-imports': [
+          'error',
+          {
+            patterns: createPattern(pkg),
+          },
+        ],
+        '@typescript-eslint/no-floating-promises': [
+          'error',
+          {
+            ignoreVoid: false,
+            ignoreIIFE: false,
+          },
+        ],
+        '@typescript-eslint/no-misused-promises': ['error'],
+        '@typescript-eslint/prefer-readonly': 'error',
+        'import-x/no-extraneous-dependencies': ['error'],
+        'react-hooks/exhaustive-deps': [
+          'warn',
+          {
+            additionalHooks: 'useAsyncCallback',
+          },
+        ],
+      },
+    })),
+    {
+      files: [
+        '**/__tests__/**/*',
+        '**/*.stories.tsx',
+        '**/*.spec.ts',
+        '**/tests/**/*',
+        'scripts/**/*',
+        '**/benchmark/**/*',
+        '**/__debug__/**/*',
+        '**/e2e/**/*',
+      ],
+      rules: {
+        '@typescript-eslint/no-non-null-assertion': 0,
+        '@typescript-eslint/ban-ts-comment': [
+          'error',
+          {
+            'ts-expect-error': false,
+            'ts-ignore': true,
+            'ts-nocheck': true,
+            'ts-check': false,
+          },
+        ],
+        '@typescript-eslint/no-floating-promises': 0,
+        '@typescript-eslint/no-misused-promises': 0,
+        '@typescript-eslint/no-restricted-imports': 0,
+      },
+    },
+  ],
+};
+
+module.exports = config;