json as string in JS bundle #1461

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1. retyui commented on Sep 17, 2026

   

   retyui

   on Sep 17, 2026

   Last edited by retyui

   ContributorAuthor

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   Tested perf. and memory usage on React Native 0.88.x with flashlight (Samsung S10)

   // JSON
   require('./huge.json'); // 4mb
   
   // JSON.parse('str')
   require('./huge.js'); // File `module.exports = JSON.parse('<json as string>');` 

   

   I thunk we need to turn off this optimisation to improve CPU/Memory usage

   ---

   To test

   flashlight test --bundleId "com.rn88"\
     --testCommand "adb shell monkey -p com.rn88 -c android.intent.category.LAUNCHER 1"\
     --duration 1000\
     --iterationCount 20\
     --resultsTitle "require('huge.json')"\
     --resultsFilePath "before.json"
   
   
   flashlight report before.json after.json 
2. retyui

   added a commit that references this issue on Oct 15, 2026

   feat: No json as string in JS bundle

   ...

   ba1856e