TSLint to ESLint Migration

eslint.json

@@ -0,0 +1,166 @@
+{
+  "root": true,
+  "env": {
+    "es6": true,
+    "node": true
+  },
+  "extends": [
+    "eslint:recommended",
+    "plugin:import/typescript",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:@typescript-eslint/recommended-requiring-type-checking",
+    "prettier"
+  ],
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "project": "tsconfig.json",
+    "sourceType": "module"
+  },
+  "plugins": ["eslint-plugin-import", "header", "@typescript-eslint"],
+  "rules": {
+    "@typescript-eslint/consistent-type-assertions": "error",
+    "@typescript-eslint/no-non-null-assertion": "error",
+    "@typescript-eslint/no-unnecessary-qualifier": "error",
+    "@typescript-eslint/no-unused-expressions": "error",
+    "curly": "error",
+    "header/header": [
+      "error",
+      "block",
+      [
+        "*",
+        " * @license",
+        " * Copyright Google LLC All Rights Reserved.",
+        " *",
+        " * Use of this source code is governed by an MIT-style license that can be",
+        " * found in the LICENSE file at https://angular.io/license",
+        " "
+      ],
+      2
+    ],
+    "import/first": "error",
+    "import/newline-after-import": "error",
+    "import/no-absolute-path": "error",
+    "import/no-duplicates": "error",
+    "import/no-extraneous-dependencies": ["off", { "devDependencies": false }],
+    "import/no-unassigned-import": ["error", { "allow": ["symbol-observable"] }],
+    "import/order": [
+      "error",
+      {
+        "alphabetize": { "order": "asc" },
+        "groups": [["builtin", "external"], "parent", "sibling", "index"]
+      }
+    ],
+    "max-len": [
+      "error",
+      {
+        "code": 140,
+        "ignoreUrls": true
+      }
+    ],
+    "max-lines-per-function": ["error", { "max": 200 }],
+    "no-caller": "error",
+    "no-console": "error",
+    "no-empty": ["error", { "allowEmptyCatch": true }],
+    "no-eval": "error",
+    "no-multiple-empty-lines": ["error"],
+    "no-throw-literal": "error",
+    "padding-line-between-statements": [
+      "error",
+      {
+        "blankLine": "always",
+        "prev": "*",
+        "next": "return"
+      }
+    ],
+    "sort-imports": ["error", { "ignoreDeclarationSort": true }],
+
+    "no-case-declarations": "off",
+    "no-fallthrough": "off",
+    "no-underscore-dangle": "off",
+    "@typescript-eslint/await-thenable": "off",
+    "@typescript-eslint/no-empty-function": "off",
+    "@typescript-eslint/no-implied-eval": "off",
+    "@typescript-eslint/no-var-requires": "off",
+    "@typescript-eslint/no-unnecessary-type-assertion": "off",
+    "@typescript-eslint/no-unsafe-assignment": "off",
+    "@typescript-eslint/no-unsafe-call": "off",
+    "@typescript-eslint/no-unsafe-member-access": "off",
+    "@typescript-eslint/no-unsafe-return": "off",
+    "@typescript-eslint/no-unused-vars": "off",
+    "@typescript-eslint/prefer-regexp-exec": "off",
+    "@typescript-eslint/require-await": "off",
+    "@typescript-eslint/restrict-plus-operands": "off",
+    "@typescript-eslint/unbound-method": "off",
+
+    "arrow-body-style": ["error", "as-needed"],
+    "import/no-internal-modules": "off",
+    "no-useless-constructor": "off",
+    "no-empty-function": "off",
+    "jsdoc/check-indentation": "off",
+    "prefer-arrow/prefer-arrow-functions": "error",
+    "jsdoc/newline-after-description": "off",
+    "@typescript-eslint/object-curly-spacing": ["error", "always"],
+    "@typescript-eslint/lines-between-class-members": ["error", "always", { "exceptAfterSingleLine": true }],
+    "@typescript-eslint/sort-type-union-intersection-members": "error",
+    "@typescript-eslint/no-explicit-any": "error",
+    "@typescript-eslint/prefer-nullish-coalescing": "error",
+    "@typescript-eslint/no-namespace": "error",
+
+    "no-shadow": "off",
+    "@typescript-eslint/no-shadow": "error",
+
+    "no-null/no-null": "error",
+
+    "@typescript-eslint/method-signature-style": ["error", "method"],
+    "@typescript-eslint/no-magic-numbers": "off",
+    "@typescript-eslint/space-before-function-paren": ["error", "never"],
+    "@typescript-eslint/no-extra-parens": "off",
+
+    "@typescript-eslint/explicit-function-return-type": [
+      "error",
+      {
+        "allowExpressions": true
+      }
+    ],
+    "@typescript-eslint/ban-types": "error",
+    "@typescript-eslint/no-empty-interface": "error",
+    "@typescript-eslint/no-type-alias": "off",
+    "@typescript-eslint/init-declarations": "off",
+    "@typescript-eslint/prefer-enum-initializers": "error",
+    "@typescript-eslint/no-confusing-void-expression": "error",
+    "@typescript-eslint/restrict-template-expressions": [
+      "error",
+      {
+        "allowNumber": true,
+        "allowBoolean": true,
+        "allowAny": false,
+        "allowNullish": true
+      }
+    ],
+    "@typescript-eslint/no-loop-func": "error",
+    "@typescript-eslint/ban-tslint-comment": "error",
+
+    "capitalized-comments": "error",
+    "spaced-comment": "off",
+
+    "@typescript-eslint/array-type": "off",
+    "@typescript-eslint/explicit-module-boundary-types": "error",
+
+    "@typescript-eslint/no-implicit-any-catch": "off",
+    "@typescript-eslint/strict-boolean-expressions": "off",
+    "@typescript-eslint/prefer-readonly-parameter-types": "off",
+    "@typescript-eslint/prefer-optional-chain": "off",
+    "@typescript-eslint/consistent-indexed-object-style": "off",
+    "@typescript-eslint/consistent-type-imports": "off"
+  },
+  "overrides": [
+    {
+      "files": ["!packages/**", "**/*_spec.ts"],
+      "rules": {
+        "import/no-extraneous-dependencies": ["error", { "devDependencies": true }],
+        "max-lines-per-function": "off",
+        "no-console": "off"
+      }
+    }
+  ]
+}

eslint.test.json

@@ -0,0 +1,8 @@
+{
+  "extends": "./eslint.json",
+  "rules": {
+    "completed-docs": false,
+    "max-file-line-count": false,
+    "no-unsafe-any": false
+  }
+}