包npm项目写在流程中

Question

I have to publish a npm package that is written with Flow and compiled using babel .

What I did was I compiled all my source files. Then I copied compiled files from dist/ and put them into some other directory. I also put package.json there and edited it and then I published the package on npm.

I can then normally install project and require it my project. However when I run my project, it throws error that I need to require babel-core and babel-polyfills (install them as dev-dependencies). The problem is since my new project only requires my own package and does not use babel or something like that, so I see no point in requiring babel dependencies in my new project.

My question is, how can I package my library that is written with Flow and compiled by babel, so that I can then use this package in other places without requiring babel.

Answer 1

Did you add main and files into your package.json?

https://docs.npmjs.com/files/package.json#main

https://docs.npmjs.com/files/package.json#files

Your files should probably be

"files": [
  "dist/**"
],

Also to prevent Users who install your package from needing to install the transpilers (ie babel ) add them into your devDependencies

Directly from the https://docs.npmjs.com/files/package.json#dependencies

Please do not put test harnesses or transpilers in your dependencies object. See devDependencies , below.

Also to add flow to your dist add https://github.com/AgentME/flow-copy-source

flow-copy-source -v src dist

Answer 2

The problem was in using incorrectly defined preset In my babelrc I only had defined preset: "env" without specifying that it needs to run on node 8 and higher, since the code used async. Therefore i defined preset as:

preset: ["env", {
    targets: {
        "node": "8.9.1"
    }
}

And the asnyc functions compiles correctly.

Also, thanks to @Kenneth I used flow-copy-source to add type to my library, so it can be seen in intelisense.