Function findInlineOrLinkedMapFromJs

packages/core/inspector_modules.ts:43–75

(jsPath: string)

}

function findInlineOrLinkedMapFromJs(jsPath: string): { key: string; text: string } | null {
	const jsText = safeReadText(jsPath);
	if (!jsText) return null;

	// Look for the last sourceMappingURL directive
	// Supports both //# and /*# */ styles; capture up to line end or */
	const re = /[#@]\s*sourceMappingURL=([^\s*]+)(?:\s*\*\/)?/g;
	let match: RegExpExecArray | null = null;
	let last: RegExpExecArray | null = null;
	while ((match = re.exec(jsText))) last = match;
	if (!last) return null;

	const url = last[1];
	if (url.startsWith('data:application/json')) {
		const base64 = url.split(',')[1];
		if (!base64) return null;
		try {
			const text = atob(base64);
			return { key: `inline:${jsPath}`, text };
		} catch (_) {
			return null;
		}
	}

	// Linked .map file (relative)
	const jsDir = jsPath.substring(0, jsPath.lastIndexOf('/'));
	const mapPath = `${jsDir}/${url}`;
	const text = safeReadText(mapPath);
	if (text) {
		return { key: mapPath, text };
	}
	return null;
}

function loadAndExtractMap(mapPath: string, fallbackJsPath?: string) {
	// check cache first