refactor: Migrate to ESLint

Author: motss

.build.eslintrc.json

@@ -0,0 +1,8 @@
+{
+  "extends": [
+    "./.eslintrc.json"
+  ],
+  "rules": {
+    "no-debugger": "error"
+  }
+}

.eslintrc.json

@@ -0,0 +1,45 @@
+{
+  "env": {
+    "browser": true
+  },
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:promise/recommended",
+    "plugin:regexp/recommended"
+  ],
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "project": "./tsconfig.json"
+  },
+  "plugins": [
+    "@typescript-eslint"
+  ],
+  "rules": {
+    "no-async-promise-executor": "off",
+    "no-debugger": "off",
+    "no-unused-vars": "off",
+    "@typescript-eslint/no-unused-vars": [
+      "error", {
+        "argsIgnorePattern": "^_",
+        "varsIgnorePattern": "^_"
+      }
+    ],
+    "comma-dangle": "off",
+    "@typescript-eslint/comma-dangle": [
+      "error", {
+        "arrays": "always-multiline",
+        "objects": "always-multiline",
+        "imports": "always-multiline",
+        "exports": "always-multiline",
+        "functions": "never"
+      }
+    ],
+    "@typescript-eslint/consistent-type-imports": [
+      "error", {
+        "prefer": "type-imports",
+        "disallowTypeAnnotations": false
+      }
+    ]
+  }
+}