更改没有index.js的NPM入口点

Question

I recently published a private module to NPM which has some common code we use across a few of our services.

The code is written in ES6 and so we need to transpile it using babel before publishing to NPM. I've got a prepublish script which transpiles src in to lib .

There's no index.js file in this module since it's just some common code.

The problem I'm having is that when I install the module from NPM, using require('@ourorg/ourmodule/somecode') doesn't work (module can't be found). I instead have to use require('@ourorg/ourmodule/lib/somecode') .

I've tried changing the main field in package.json to many variations of lib , but it doesn't seem to work unless I include an index.js file, in which case require('@ourorg/ourmodule') returns whatever is exported there. One workaround I can see would be to export all the common code in an index.js file, but this isn't maintainable at all.

Answer 1

The main field in package.json follows the same rules as normal Node imports - either it should point at a single file in particular, or it can point at a directory that has an index.js in it.

As far as I know, there is no way to make importing your package simply be an alias for a directory. If there was, what would require("@ourorg/ourmodule") return?

If it's absolutely driving you crazy having to type lib every time you import something, maybe you could add a step to your build process that autogenerates an index.js that re-exports everything at the root?