fix: improve typescript support (#67)

Author: alexander-akait

configs/typescript.js

@@ -274,6 +274,8 @@ async function getTypescriptJSDocRecommendedConfig() {
 	};
 }
 
+const allExtensions = [...typescriptExtensions, ...javascriptExtensions];
+
 /**
  * @returns {Promise<Record<string, string>>} config
  */
@@ -317,6 +319,18 @@ async function getTypescriptRecommendedConfig() {
 		plugins: {
 			...baseConfig.plugins,
 		},
+		settings: {
+			"import/extensions": allExtensions,
+			"import/external-module-folders": ["node_modules", "node_modules/@types"],
+			"import/parsers": {
+				"@typescript-eslint/parser": typescriptExtensions,
+			},
+			"import/resolver": {
+				node: {
+					extensions: allExtensions,
+				},
+			},
+		},
 		rules: {
 			...eslintRecommendedConfig.rules,
 			...recommendedConfig.rules,
@@ -721,6 +735,9 @@ async function getTypescriptRecommendedConfig() {
 			// No need
 			// "use-unknown-in-catch-callback-variable": "error",
 
+			// TypeScript compilation already ensures that named imports exist in the referenced module
+			"import/named": "off",
+
 			// TypeScript handles this for us
 			"import/no-unresolved": "off",
 		},

configs/utils/extensions.js

@@ -1,5 +1,5 @@
-const javascriptExtensions = [".js", ".cjs", ".mjs", ".jsx"];
-const typescriptExtensions = [".ts", ".cts", ".mts", ".tsx"];
+const javascriptExtensions = [".js", ".jsx", ".cjs", ".mjs"];
+const typescriptExtensions = [".ts", ".tsx", ".cts", ".mts"];
 const allExtensions = [...javascriptExtensions, ...typescriptExtensions];
 
 export { allExtensions, javascriptExtensions, typescriptExtensions };

validation/dirty-package/file.js

@@ -1,4 +1,5 @@
 import otherMod from "././other-module.cjs";
+import myNumber from "./my-dirty-modules";
 import { a, b } from "./my-module.js";
 
 const commonJSModule = require("./module-js-common.js");
@@ -22,3 +23,4 @@ sum(foo, bar);
 sum(a, b);
 sum(otherMod.a, otherMod.b);
 sum(commonJSModule.a, commonJSModule.b);
+sum(myNumber, myNumber);

validation/dirty-package/my-dirty-modules.js

@@ -0,0 +1 @@
+export default 1;