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react-native-webview

native-seam only: react-native-webview 14.0.1 runs unchanged through RNCWebViewModule and the tenant-to-shell hosted iframe surface. The WebView and keyboard library cases pass on Peach at 14.0.1; paired native and Peach validation recorded in the 13.x entry does not establish 14.x outcomes.
80%
API coverage
0.82% diffiOS 27.0
Graded crop: stage
0.82% diffiOS 27.0
Graded crop: stage
Working
source.uri/source.html/source.baseUrl, Chromium cross-origin URI loading under the shell COEP, same-origin URI cookies, source.html persistent localStorage, document-start ReactNativeWebView bootstrap and injectedJavaScriptBeforeContentLoaded/injectedJavaScript on source.html, and on remote cross-origin source.uri pages in a playwright-driven sim, main frame only as on iOS, strict ReactNativeWebView.postMessage bridge envelope in both directions, onMessage synthetic event with navigation fields, onOpenWindow target delivery for source.html, successful onLoad/Start/End and onNavigationStateChange, ref.reload on URI pages, ref.injectJavaScript/postMessage, local HTML fragment URL/callback behavior, onShouldStartLoadWithRequest for local link clicks with native-shaped request and loading payloads, initial-load onShouldStartLoadWithRequest for http(s) documents with the native other/top-frame/lockIdentifier payload allowed or denied through the lock callback, form-submit onShouldStartLoadWithRequest with navigationType formsubmit and, for a get form, the form data as the url query, resumed in place, ref.stopLoading cancelling an in-flight reload with no following callbacks, onError with the native NSURLErrorDomain code/description for a refused local connection and WebKitErrorDomain 103 for a port on the WebKit blocked list, each plus onLoadEnd and renderError(domain, code, description), onHttpError with the native url/statusCode for a same-origin local HTTP error, internal content scrolling, renderLoading, javaScriptEnabled sandbox, layout, inherited clipping and visibility, parked/live presentation
Missing
Safari/WebKit cross-origin URI pages without COEP-compatible response headers remain permanently loading because WebKit ignores iframe credentialless; Chromium credentialless cross-origin URI frames send no credentials, including cookies set by their own origin, and use ephemeral storage; iframe pixels in canvas screenshots; script injection, ReactNativeWebView bootstrap, and onOpenWindow for remote pages outside a playwright-driven sim (the desktop app or a plain browser tab), because only the sim browser host reaches a cross-origin frame at document start; injection into a remote page whose Content-Security-Policy forbids eval, which a WKUserScript bypasses; source.headers on the initial load of a remote page; cross-origin history truthfulness (goBack/goForward across documents, truthful canGoBack/canGoForward) plus reload and history-traversal policy decisions; initial-load decisions for data:/about:/file documents, which stay ungated with no paired native ask observed; remote HTTP error statuses and refused remote connections, which a cross-origin frame never exposes to the browser, and the HTTP status of a non-get form submit; allowsBackForwardNavigationGestures, userAgent, dataDetectorTypes, cacheEnabled, incognito, scalesPageToFit, originWhitelist enforcement; the 14.x iOS removeIosKeyboardObserver option