feat: joinPath()

[curbengh]

ref: hexojs/hexo#4479

this enhances path.join() to convert slash, but this joinPath() doesn't resolve '../' yet.

[curbengh]

Similar behaviour as path.join()

[coveralls]

Coverage increased (+0.05%) to 97.476% when pulling c1295d6 on curbengh:join-path into bf42b66 on hexojs:master.

[jiangtj]

but resolving '../' is not supported

path.resolve() is work?

[curbengh]

path.resolve() is work?

I mean this joinPath() doesn't support resolving path yet, perhaps in future if there is a demand, currently it's out of scope.

for now, need to joinPath(resolve(from, to), pathtwo).

---

fixed unit test, ready for review.

[SukkaW]

@curbengh

Recently I have found a package on npm: https://npm.im/url-join

Have a look?

[stevenjoezhang]

See also hexojs/hexo#5457
I believe there are many more pieces of code that could utilize this joinPath function.

[uiolee]

I think it should be implemented based on path or any other module instead of string concatenation.

[stevenjoezhang]

Yes, maybe path.posix.join will work for such cases.
Moreover, some other languages have more comprehensive libraries for path manipulation, rather than just simple string operations. I particularly like Rust's PathBuf, which is very elegant. I'm not sure if Node.js has a similar implementation.