cts files emitting cjs files with ES module syntax

[PythonCoderAS]

🔎 Search Terms

cts
cjs
.cts
.cjs

🕗 Version & Regression Information

• This is the behavior in every version I tried, and I reviewed the FAQ for entries about cts files

⏯ Playground Link

https://github.com/PythonCoderAS/typescript-bug-repro

💻 Code

File config.ts:

import { resolve } from "path";

const config = resolve(__dirname, "config.cts")

module.exports = config;

🙁 Actual behavior

config.cjs:

import { resolve } from "path";
const config = resolve(__dirname, "config.cts");
module.exports = config;
//# sourceMappingURL=config.cjs.map

🙂 Expected behavior

const { resolve } = require("path");
const config = resolve(__dirname, "config.cts");
module.exports = config;
//# sourceMappingURL=config.cjs.map

This is correct because cjs files cannot use ESM things like import.

Additional information about the issue

This might be an error to use but it should throw an error instead of failing silently.

[RyanCavanaugh]

Duplicate #50647

[typescript-bot]

This issue has been marked as "Duplicate" and has seen no recent activity. It has been automatically closed for house-keeping purposes.