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fork of witchsky forked from jollywhoppers.com/witchsky.app
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2.7 kB · 65 lines
JavaScript
at prod
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566const {withMainApplication} = require('expo/config-plugins')
const anchor = 'loadReactNative(this)'
const imports = [ 'import android.util.Log', 'import com.facebook.react.common.ReleaseLevel', 'import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint', 'import com.facebook.react.internal.featureflags.ReactNativeFeatureFlags', 'import com.facebook.react.internal.featureflags.ReactNativeNewArchitectureFeatureFlagsDefaults',]
/* * With prepared text layout, Fabric keeps the android.text.Layout it builds * while measuring text and PreparedLayoutTextView draws it as-is, instead of * ReactTextView (an AppCompatTextView) building a second layout on the UI * thread. * * The override must run after loadReactNative() installs the release-level * flags and before any ReactHost or Activity reads a flag. It replaces the * whole flag provider, so it is only applied on the STABLE release level, whose * provider is an empty subclass of ReactNativeNewArchitectureFeatureFlagsDefaults. * * Prepared layouts bypass Fabric's regular text measurement cache, so the * prepared text cache is the only one left. Its default of 200 entries is * smaller than the number of text nodes in a long thread or feed, which makes * scrolling re-measure text on the JS thread. */const override = ` if (DefaultNewArchitectureEntryPoint.releaseLevel == ReleaseLevel.STABLE) { val flagsReadEarly = ReactNativeFeatureFlags.dangerouslyForceOverride( object : ReactNativeNewArchitectureFeatureFlagsDefaults() { override fun enablePreparedTextLayout() = true override fun preparedTextCacheSize() = 1000.0 }) if (flagsReadEarly != null) { Log.w("MainApplication", "Feature flags read before override: $flagsReadEarly") } }`
module.exports = function withAndroidPreparedTextLayoutPlugin(config) { return withMainApplication(config, config => { let contents = config.modResults.contents if (config.modResults.language !== 'kt' || !contents.includes(anchor)) { throw Error( `Expected to find \`${anchor}\` in MainApplication.kt. ` + 'You MUST verify where React Native is now loaded before the ' + 'feature flag override can be re-applied.', ) } if (contents.includes('enablePreparedTextLayout')) { return config } const missingImports = imports.filter(i => !contents.includes(i)) if (missingImports.length) { contents = contents.replace( /^(package .*)$/m, `$1\n\n${missingImports.join('\n')}`, ) } contents = contents.replace(anchor, `${anchor}${override}`) config.modResults.contents = contents return config })}