CODEWITHSUNDEEP
androidiosreact-native
Amir Hedieh
Amir Hedieh

Reputation: 1178

Is APK size affected by unused packages in ReactNative?

I want to know do unused packages cause APK size to grow?

Consider I install dozens of NPM packages for my project but I never import and use them. These files obviously increase my project folder size but do they affect APK size when building APK?

The question can be answered about .ipa too.

Upvotes: 1

Views: 804

Answers (1)

tvanlaerhoven
tvanlaerhoven

Reputation: 709

APK Analyzer will not look for any unused dependent NPM packages because all your javascript code is bundled by metro before being included in your Android project as an index.android.bundle asset:

Metro is a JavaScript bundler. It takes in an entry file and various options, and gives you back a single JavaScript file that includes all your code and its dependencies.

So any unused dependencies must be pruned before creating the apk. Read about Tree shaking, which does exactly that:

Tree shaking is a process in which the bundler includes only the code that is actually used.

Note that only modules that have a dependency from your code will be included in the bundle.

Upvotes: 2

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