Function dumpDynImportDiagnostics

packages/vite/hmr/client/utils.ts:249–292

(spec: string, err: any)

}

async function dumpDynImportDiagnostics(spec: string, err: any) {
	try {
		const origin = httpOriginForVite || deriveHttpOrigin(hmrWsUrl) || '';
		const target = spec || '';
		const { url: uFromStack, line, column } = parseStackFrame(err);
		const url = uFromStack || target;
		if (!/^https?:\/\//.test(url)) return;
		const addParam = (u: string, k: string, v = '1') => u + (u.includes('?') ? '&' : '?') + `${k}=${v}`;
		const urlsToTry = [url];
		if (/(\/ns\/(asm|sfc))/.test(url)) urlsToTry.push(addParam(url, 'raw'));
		const results: Array<{ which: string; text?: string; hash?: string }> = [];
		for (const u of urlsToTry) {
			try {
				const res = await fetch(u as any, { method: 'GET' as any });
				const text = await res.text();
				const hash = res.headers?.get?.('X-NS-Source-Hash') || undefined;
				results.push({ which: u === url ? 'sanitized' : 'raw', text, hash });
			} catch {}
		}
		const locInfo = line && line > 0 ? ` at ${url}:${line}:${column || 0}` : '';
		try {
			console.warn('[hmr-client][dyn-import][diagnostics]', `error${locInfo}`);
		} catch {}
		for (const r of results) {
			if (!r.text) continue;
			const lines = r.text.split('\n');
			let ctx = '';
			if (line && line > 0) {
				const start = Math.max(1, line - 3),
					end = Math.min(lines.length, line + 3);
				for (let i = start; i <= end; i++) {
					const mark = i === line ? '>' : ' ';
					const ln = String(i).padStart(4, ' ');
					ctx += `${mark}${ln}: ${lines[i - 1]}\n`;
				}
			} else {
				ctx = lines.slice(0, 20).join('\n');
			}
			try {
				console.warn(`[hmr-client][dyn-import][${r.which}]`, r.hash ? `(hash ${r.hash})` : '', '\n' + ctx);
			} catch {}
		}
	} catch {}
}

// Normalize import specifiers for HTTP-only ESM runtime
export function normalizeSpec(raw: string): string {