Add export * from 'base.js' for better modularity

[LeeSamFong]

I hope to add this codes to support friendlier tree-shaking

[sindresorhus]

Tree-shaking should work fine even without this. If not, the problem is the bundler you use.

[LeeSamFong]

Thank you, sindresorhus, for your reply.

For this, I have provided 2 demos.

Before add export * from "./base.js"：

When I try to import the following code, the output generated by Rollup will be over 600 lines of code.

input: https://github.com/LeeSamFong/query-string/blob/before/test.js
output: https://github.com/LeeSamFong/query-string/blob/before/dist/bundle.js

---

When I import them separately, the build output will only be around 200 lines of code.

input: https://github.com/LeeSamFong/query-string/blob/after/test.js
output: https://github.com/LeeSamFong/query-string/blob/after/dist/bundle.js

[LeeSamFong]

If I have any misunderstandings, can sindresorhus point them out for me?