有没有办法在package.json中自动构建依赖项？

Question

I use firebaseui, and I need to build it with french localization because the localized versions are not published to npm. My current package.json looks like this:

"dependencies": {
    "firebaseui": "^3.5.2"
}

Is there a way to change it so that firebaseui is built with build-js-fr parameter on npm install ?

Answer 1

As we can find in this Github issue :

[Localization] May come later down the road.

I would not recommend having a local fork with your own build, because you will diverge from the main repo thus loosing upgrades and such. However, a comment on this issue suggest using patch-package , an npm module that would allow you to make a "band-aid". Seems fine by me.

So I would suggest the following plan :

• You update the way firebaseui is built, directly inside your node_modules folder.
• Then npx patch-package firebaseui , which will create a paches/firebaseui-3.5.2.patch .
• Add this folder to your source control, and every team member will get the patch on npm i .
• Once the firebaseui lib get i18n right, you ditch the patch.

Answer 2

Here's a more direct solution, I don't recommend it and it's only a proof of concept to get you started, but you can use the postinstall script in package.json to execute a script after npm i .

You would have something like this:

"script": {
    "postinstall": "./postinstall.sh",
}

Create the postinstall.sh script and make it executable:

touch postinstall.sh
chmod u+x postinstall.sh

Then you can clone the repo and build it directly, here's an example postinstall.sh :

#!/usr/bin/env bash

git clone https://github.com/firebase/firebaseui-web.git
cd firebaseui-web
git checkout v3.5.2
npm i

for language in fr en es
do
    npm run build build-js-$language
done

But this will take a lot of time to run. Marcel Falliere's solution sounds better. I tried running the build command from the firebaseui folder in node_modules . You'll need gulp , but you will hit an error due to missing gulpfile.js .

I tested the solution posted above here on github:
https://github.com/GabLeRoux/npm-build-firebaseui-postinstall-example

Note that this will probably fail on windows. This is only a proof of concept 🍻