chore: Use typescript-eslint@v6 with reworked configs

eslint.config.js

@@ -74,50 +74,100 @@ module.exports = [
       "import/no-extraneous-dependencies": "error",
     },
   },
-  {
-    files: ["**/*.ts"],
-    languageOptions: {
-      parser: parserTypeScriptESLint,
-      parserOptions: {
-        project: "./tsconfig.json",
-      },
-    },
-    plugins: {
-      "@typescript-eslint": pluginTypeScriptESLint,
-    },
-    rules: {
-      "no-unused-vars": "off",
-      "@typescript-eslint/no-unused-vars": "error",
-      "no-dupe-class-members": "off",
-      "@typescript-eslint/no-dupe-class-members": "error",
-      "no-undef": "off",
-      "no-redeclare": "off",
-      "@typescript-eslint/ban-ts-comment": [
-        "error",
-        {
-          "ts-ignore": { descriptionFormat: "^\\(Babel 7 vs Babel 8\\) .+$" },
+  ...compat
+    .extends(
+      "plugin:@typescript-eslint/recommended-type-checked",
+      "plugin:@typescript-eslint/stylistic-type-checked"
+    )
+    .map(config => {
+      return {
+        ...config,
+        files: ["**/*.ts"],
+        languageOptions: {
+          parser: parserTypeScriptESLint,
+          parserOptions: {
+            project: "./tsconfig.eslint.json",
+          },
         },
-      ],
-      "@typescript-eslint/consistent-type-imports": [
-        "error",
-        { disallowTypeAnnotations: false },
-      ],
-      "@typescript-eslint/no-use-before-define": [
-        "error",
-        {
-          functions: false,
-          classes: false,
-          allowNamedExports: true,
+        plugins: {
+          "@typescript-eslint": pluginTypeScriptESLint,
         },
-      ],
-      "@typescript-eslint/no-unnecessary-type-assertion": "error",
-      "@typescript-eslint/no-confusing-void-expression": [
-        "error",
-        { ignoreArrowShorthand: true },
-      ],
-      "@typescript-eslint/no-import-type-side-effects": "error",
-    },
-  },
+        rules: {
+          ...config.rules,
+          "no-unused-vars": "off",
+          "@typescript-eslint/no-unused-vars": "error",
+          "no-dupe-class-members": "off",
+          "@typescript-eslint/no-dupe-class-members": "error",
+          "no-undef": "off",
+          "no-redeclare": "off",
+          "@typescript-eslint/ban-ts-comment": [
+            "error",
+            {
+              "ts-ignore": {
+                descriptionFormat: "^\\(Babel 7 vs Babel 8\\) .+$",
+              },
+            },
+          ],
+          "@typescript-eslint/consistent-type-imports": [
+            "error",
+            { disallowTypeAnnotations: false },
+          ],
+          "@typescript-eslint/no-use-before-define": [
+            "error",
+            {
+              functions: false,
+              classes: false,
+              allowNamedExports: true,
+            },
+          ],
+          "@typescript-eslint/no-confusing-void-expression": [
+            "error",
+            { ignoreArrowShorthand: true },
+          ],
+          "@typescript-eslint/no-import-type-side-effects": "error",
+
+          // Todo: Investigate, for each of these, whether we want them
+          "@typescript-eslint/array-type": "off",
+          "@typescript-eslint/await-thenable": "off",
+          "@typescript-eslint/ban-types": "off",
+          "@typescript-eslint/consistent-generic-constructors": "off",
+          "@typescript-eslint/consistent-indexed-object-style": "off",
+          "@typescript-eslint/consistent-type-definitions": "off",
+          "@typescript-eslint/dot-notation": "off",
+          "@typescript-eslint/no-base-to-string": "off",
+          "@typescript-eslint/no-duplicate-type-constituents": "off",
+          "@typescript-eslint/no-empty-function": "off",
+          "@typescript-eslint/no-empty-interface": "off",
+          "@typescript-eslint/no-explicit-any": "off",
+          "@typescript-eslint/no-misused-promises": "off",
+          "@typescript-eslint/no-namespace": "off",
+          "@typescript-eslint/no-redundant-type-constituents": "off",
+          "@typescript-eslint/no-this-alias": "off",
+          "@typescript-eslint/no-unsafe-assignment": "off",
+          "@typescript-eslint/no-unsafe-call": "off",
+          "@typescript-eslint/no-unsafe-declaration-merging": "off",
+          "@typescript-eslint/no-unsafe-member-access": "off",
+          "@typescript-eslint/no-var-requires": "off",
+          "@typescript-eslint/prefer-for-of": "off",
+          "@typescript-eslint/prefer-function-type": "off",
+          "@typescript-eslint/prefer-nullish-coalescing": "off",
+          "@typescript-eslint/prefer-optional-chain": "off",
+          "@typescript-eslint/prefer-string-starts-ends-with": "off",
+          "@typescript-eslint/require-await": "off",
+          "@typescript-eslint/restrict-plus-operands": "off",
+          "@typescript-eslint/restrict-template-expressions": "off",
+          "@typescript-eslint/sort-type-constituents": "off",
+          "@typescript-eslint/triple-slash-reference": "off",
+          "@typescript-eslint/unbound-method": "off",
+          "prefer-rest-params": "off",
+
+          // https://github.com/typescript-eslint/typescript-eslint/issues/5014
+          "@typescript-eslint/no-inferrable-types": "off",
+          "@typescript-eslint/no-unsafe-argument": "off",
+          "@typescript-eslint/no-unsafe-return": "off",
+        },
+      };
+    }),
   {
     files: sourceFiles("js,ts,cjs,mjs"),
     languageOptions: {

package.json

@@ -43,8 +43,8 @@
     "@rollup/plugin-replace": "^5.0.2",
     "@types/jest": "^29.5.2",
     "@types/node": "^20.3.3",
-    "@typescript-eslint/eslint-plugin": "^5.61.0",
-    "@typescript-eslint/parser": "^5.61.0",
+    "@typescript-eslint/eslint-plugin": "^6.0.0",
+    "@typescript-eslint/parser": "^6.0.0",
     "babel-plugin-transform-charcodes": "^0.2.0",
     "c8": "^7.12.0",
     "chalk": "^5.0.0",

packages/babel-plugin-transform-runtime/src/polyfills.ts

@@ -8,10 +8,13 @@ import type { PluginAPI, PluginObject } from "@babel/core";
 import _pluginCorejs2 from "babel-plugin-polyfill-corejs2";
 import _pluginCorejs3 from "babel-plugin-polyfill-corejs3";
 import _pluginRegenerator from "babel-plugin-polyfill-regenerator";
+// eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
 const pluginCorejs2 = (_pluginCorejs2.default ||
   _pluginCorejs2) as typeof _pluginCorejs2.default;
+// eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
 const pluginCorejs3 = (_pluginCorejs3.default ||
   _pluginCorejs3) as typeof _pluginCorejs3.default;
+// eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
 const pluginRegenerator = (_pluginRegenerator.default ||
   _pluginRegenerator) as typeof _pluginRegenerator.default;
 

packages/babel-traverse/src/path/lib/hoister.ts

@@ -223,7 +223,7 @@ export default class PathHoister<T extends t.Node = t.Node> {
     return false;
   }
 
-  run() {
+  run(): NodePath<t.Expression> | undefined {
     this.path.traverse(referenceVisitor, this);
 
     if (this.mutableBinding) return;

packages/babel-types/src/converters/toStatement.ts

@@ -43,7 +43,7 @@ function toStatement(node: t.Node, ignore?: boolean): t.Statement | false {
 
   // @ts-expect-error todo(flow->ts): node.id might be missing
   if (mustHaveId && !node.id) {
-    newType = false as false;
+    newType = false;
   }
 
   if (!newType) {

tsconfig.eslint.json

@@ -0,0 +1,6 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "strict": true
+  }
+}