Function attachDiagnosticsToFrame

packages/vite/hmr/client/utils.ts:333–373

(frame: any)

}

export function attachDiagnosticsToFrame(frame: any) {
	if (!__NS_ENV_VERBOSE__ || !frame) return;
	try {
		if ((frame as any).__ns_diag_attached__) return;
		(frame as any).__ns_diag_attached__ = true;
		const safeOn = (v: any, evt: string, cb: Function) => {
			try {
				v?.on?.(evt as any, cb as any);
			} catch {}
		};
		const logEvt = (name: string) => (args: any) => {
			try {
				const page = (args && (args.object?.currentPage || args.object?._currentEntry?.resolvedPage)) || args?.object || null;
				const pageCtor = String(page?.constructor?.name || '').replace(/^_+/, '');
				const tag = (page as any)?.__ns_hmr_tag || (page as any)?.__ns_diag_tag;
				console.log('[diag][frame]', name, {
					frameCtor: frame?.constructor?.name,
					pageCtor,
					tag,
					backstackDepth: (frame as any)?._backStack?.length || 0,
				});
			} catch {}
		};
		safeOn(frame, 'navigatingTo', logEvt('navigatingTo'));
		safeOn(frame, 'navigatedTo', logEvt('navigatedTo'));
		safeOn(frame, 'navigatingFrom', logEvt('navigatingFrom'));
		safeOn(frame, 'navigatedFrom', logEvt('navigatedFrom'));
		safeOn(frame, 'loaded', () => {
			try {
				console.log('[diag][frame] loaded', { ctor: frame?.constructor?.name });
			} catch {}
		});
		safeOn(frame, 'unloaded', () => {
			try {
				console.log('[diag][frame] unloaded', {
					ctor: frame?.constructor?.name,
				});
			} catch {}
		});
	} catch {}
}

export function logUiSnapshot(reason: string) {
	try {