feat(eslint-config): add naming convention rules

BREAKING CHANGE: @typescript-eslint/typescript-eslint v3.0.0 introduces
a list of breaking changes. Existing code might violate the new or changed
rules. Manual fixes may be required.

See more details at:
https://github.com/typescript-eslint/typescript-eslint/releases/tag/v3.0.0

packages/eslint-config/eslintrc.js

@@ -155,6 +155,106 @@ module.exports = {
     '@typescript-eslint/prefer-nullish-coalescing': 'error',
     '@typescript-eslint/no-extra-non-null-assertion': 'error',
     '@typescript-eslint/return-await': 'error',
+
+    // https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/naming-convention.md
+    camelcase: 'off',
+    '@typescript-eslint/naming-convention': [
+      'error',
+      {
+        selector: 'default',
+        format: ['camelCase'],
+      },
+
+      {
+        selector: 'variable',
+        format: ['camelCase', 'UPPER_CASE', 'PascalCase'],
+      },
+
+      {
+        selector: 'variable',
+        format: null,
+        filter: {
+          regex: '^_$',
+          match: true,
+        },
+      },
+
+      // For mixin functions
+      {
+        selector: 'function',
+        format: ['PascalCase'],
+        filter: {
+          regex: 'Mixin$',
+          match: true,
+        },
+      },
+
+      {
+        selector: 'parameter',
+        format: ['camelCase'],
+        leadingUnderscore: 'allow',
+      },
+
+      // For members such as `Content-Type`
+      {
+        selector: 'memberLike',
+        format: null,
+        filter: {
+          // you can expand this regex as you find more cases that require
+          // quoting that you want to allow
+          regex: '[- ]',
+          match: true,
+        },
+      },
+
+      // For enum members
+      {
+        selector: 'enumMember',
+        format: ['camelCase', 'UPPER_CASE', 'PascalCase'],
+        leadingUnderscore: 'allow',
+      },
+
+      // For properties
+      {
+        selector: 'property',
+        format: ['camelCase', 'UPPER_CASE', 'PascalCase'],
+        leadingUnderscore: 'allow',
+      },
+
+      {
+        selector: 'method',
+        format: ['camelCase'],
+        leadingUnderscore: 'allow',
+      },
+
+      // For static members
+      {
+        selector: 'memberLike',
+        modifiers: ['static'],
+        format: ['camelCase', 'UPPER_CASE'],
+      },
+
+      // For private members
+      {
+        selector: 'memberLike',
+        modifiers: ['private'],
+        format: ['camelCase'],
+        leadingUnderscore: 'allow',
+      },
+
+      // For protected members
+      {
+        selector: 'memberLike',
+        modifiers: ['protected'],
+        format: ['camelCase'],
+        leadingUnderscore: 'allow',
+      },
+
+      {
+        selector: 'typeLike',
+        format: ['PascalCase'],
+      },
+    ],
   },
 
   overrides: [