weird Nodejs: I never use `require()`, but got an error

Question

Please see Issue

I'm very sure that neither the package and I used no require() , but still got an error that tells me don't use require()

How weird it is!

code with error:

import stripAnsi from 'strip-ansi';

error:

Error [ERR_REQUIRE_ESM]: require() of ES Module C:\Users\13931\Desktop\ucon\node_modules\strip-ansi\index.js from C:\Users \13931\Desktop\ucon\src\utty.ts not supported.
Instead change the require of index.js in C:\Users\13931\Desktop \ucon\src\utty.ts to a dynamic import() which is available in all commonjs modules.

And the most confused thing is that: import statement is helpful everywhere except importing strip-ansi !

Answer 1

Make sure that your TypeScript config is set for an appropriate target version of Javascript that supports import so that the TypeScript compiler will generate code that uses import . If not, then it will generate code that uses require() .

You can always look at your compiled (plain Javascript) code and see what it is generating.

Answer 2

Yes, I didn't use any require() . But I wrongly got

module:"commonjs"

in tsconfig.json!

so ts changed import into require ...