cjs-module-lexer-reexports-repro

This repo simply shows the fact that cjs-module-lexer can produce unhelpful reexport results.

Specifically, the lexer resets the reexport set causing only the last instance of module.exports = require(...) to be considered.

For example parsing the below code:

if (true) {
  module.exports = require("./a.cjs");
} else {
  module.exports = require("./b.cjs");
}

yields { exports: [], reexports: [ './b.cjs' ] }, completely loosing the information that the module is also trying to re-export from './a.cjs'

Reproduction steps

npm i

npm start