Something is trying to use the devDependency 'metro-config' when building a production release build

[Voxar]

Something is trying to use the devDependency 'metro-config' when building a production release build

[robhogan]

1. You'll need the dev dependencies to build. Build tools (like Metro) themselves are typically dev dependencies.
2. That's fine, because Metro will only bundle files in use by your project (it crawls import and require from your entry point) - it doesn't just bundle everything.

[szymonrybczak]

May I ask why do you pass --production flag to when installing packages? Without passing this flag, everything works correctly.

[Voxar]

@szymonrybczak without it you also get the devDependencies which you would not want to include in a production build.

[Voxar]

Oh, I thought Metro was just a dev server.

So there's not really any point in separating packages betwen "dependencies" and "devDepencendies" then, other than semantics?

What is NODE_ENV=production / yarn --production for?