Fix commonjs & umd exports

[ivanpepelko]

Fixes the following issues (missing default export):

• exports lib packages in package.json #5000
• Imports error with CommonJS + Typescript #5008
• [1.0.0] TypeError: Cannot read properties of undefined (reading 'create') #5011

Also fixes rollup build, an issue introduced in d61dbed. After these exports were added, rollup could not produce builds with exports: "default", as it is not able to conclude what to do in this case (see here).

Exporting a member named default and changing rollup configuration resolves all of the mentioned issues and successfully creates production builds.

[jasonsaayman]

@ivanpepelko can you validate that this fix works locally as I cannot validate it right now but would like to release this asap.

[ivanpepelko]

@ivanpepelko can you validate that this fix works locally as I cannot validate it right now but would like to release this asap.

I did, the same way as explained in #5008, just without typescript.

---

This is my test script:

const axios = require('./dist/node/axios.cjs').default;

console.log({
  static: axios,
  factory: axios.create,
  instance: axios.create(),
});

Before the patch, the script crashed.
After the patch, it works as intended and described in docs.

[jasonsaayman]

Cool thanks 🚀