XMLHttpRequest corrupts headers named after Object prototype properties

Description

React Native XMLHttpRequest stores request headers and normalized response headers in ordinary objects. Valid header names that collide with Object.prototype are therefore corrupted or hidden: repeated Constructor values begin with inherited function text, __proto__ cannot be stored normally, and an absent toString response header is returned as an inherited function instead of null.

Expected behavior

All valid case-insensitive header names should be stored, combined, and retrieved as their own values without interacting with JavaScript object prototypes.

React Native Version

0.87.1 and current main

Affected Platforms

JavaScript networking - All

Commencez par l’implémentation de XMLHttpRequest de React Native et examinez comment les en-têtes de requête et les en-têtes de réponse normalisés sont stockés et récupérés. Trouvez ou ajoutez des tests ciblés pour Constructor, proto et un en-tête toString absent ; c’est terminé lorsque les noms valides insensibles à la casse conservent leurs propres valeurs sans interagir avec Object.prototype.