TypeScript wants you to import modules with:
import { foo } from "./foo"but the ECMAScript specification expects:
import { foo } from "./foo.js"TypeScript doesn't add the extensions; it also doesn't provide an extensibility hook which could be used to add them. The documentation is confusing and unhelpful; the solution that it suggests is ridiculous and unacceptable. On GitHub issues, the TypeScript developers have repeatedly reacted with indifference.
Before Node.js 16, this was less of a problem: imports without extensions still
worked. However, since Node 16 started enforcing the ES Modules spec (which requires
extensions), the code that tsc outputs became effectively invalid and impossible to run
(unless you were writing your program in a single file).
What, were you expecting the compiler for evertone's favorite "strict superset of JS" to, idk, output correct JS that is ready to execute? You crazy person!