ESM Import File extension substitution

[xseman]

I'm currently exploring ESM modules and am curious about whether Deno supports the file extension substitution mentioned in TypeScript docs.

// foo.ts
export const foo = 'foo';

// bar.ts
import { foo } from './foo.js';

deno run bar.ts
# error: Module not found "file:///tmp/tmp.lVAcziIwpe/foo.js".
#    at file:///tmp/tmp.lVAcziIwpe/bar.ts:1:21

[bartlomieju]

No, this is currently not supported.

[dsherret]

This is now supported via --unstable-sloppy-imports in Deno 1.39: https://deno.com/blog/v1.39#sloppy-imports