react-native-text-size

Returns width and height that closely match React Native's own onLayout event, ensuring layout consistency. The README states it's 'practically the same as those received from the onLayout event of a <Text> component.'

The flatHeights function is optimized for measuring multiple text strings efficiently, with tests showing speed improvements from 49,624 ms to 1,091 ms on Android for 5,000 blocks, as noted in the README.

Provides detailed font information including ascender, descender, line height, and system font specs through functions like fontFromSpecs and specsForTextStyles, useful for typography systems.

Manages platform-specific nuances such as font padding on Android and scaling issues, helping developers create UIs that behave consistently on both iOS and Android, as outlined in the features.