fix: ignore ts extension for require in typescript code (#55)

Author: alexander-akait

configs/node.js

@@ -155,7 +155,18 @@ async function getCommonJSConfig() {
 					checkTypeImports: true,
 					pattern: {
 						js: "never",
+						ts: "never",
 					},
+					// Allow to have `ts` extension in `require` for compatibility with Node.js built-in typescript support
+					pathGroupOverrides: [
+						{
+							pattern: "*.ts",
+							patternOptions: {
+								matchBase: true,
+							},
+							action: "ignore",
+						},
+					],
 				},
 			],
 		},

validation/commonjs-package/file.js

@@ -5,6 +5,11 @@ const otherMod = require("./other-module.cjs");
 // eslint-disable-next-line import/extensions
 const modAgain = require("./my-module.js");
 
+require("../typescript-node-support/my-other-code.ts");
+require("../typescript-node-support/my-other-code");
+// eslint-disable-next-line import/extensions
+require("./my-module-1.js");
+
 const foo = 1;
 const bar = 2;
 

validation/commonjs-package/my-module-1.js

@@ -0,0 +1,4 @@
+"use strict";
+
+module.exports.a = 1;
+module.exports.b = 2;

validation/dirty-package/file.js

@@ -3,6 +3,9 @@ import otherMod from "././other-module.cjs";
 
 const commonJSModule = require("./module-js-common.js");
 
+require("../typescript-node-support/my-other-code.ts");
+require("../typescript-node-support/my-other-code");
+
 const foo = 1;
 const bar = 2;
 

validation/my-ts-code.ts

@@ -1,6 +1,5 @@
 import sum from "./module.js";
 import { a, b } from "./named-exports.js";
-// Should be error by default
 import otherSum from "./my-module.ts";
 // eslint-disable-next-line import/extensions
 import otherSumAgain from "./my-module";