Function extractCandidateCodePaths

packages/shared/extract-code-paths.ts:27–66

(markdown: string)

 * `cleanPath` transform. Returns deduped candidate strings.
 */
export function extractCandidateCodePaths(markdown: string): string[] {
	const stripped = markdown
		.replace(FENCED_CODE_BLOCK, "")
		.replace(HTML_COMMENT, "");

	const candidates = new Set<string>();

	let m: RegExpExecArray | null;
	const backtickRe = new RegExp(BACKTICK_SPAN.source, "g");
	while ((m = backtickRe.exec(stripped)) !== null) {
		const inner = m[1].trim();
		if (isCodeFilePath(inner)) {
			candidates.add(inner.replace(/#.*$/, ""));
		}
	}

	for (const line of stripped.split("\n")) {
		const urlRanges: Array<[number, number]> = [];
		const urlRe = new RegExp(URL_REGEX.source, "g");
		while ((m = urlRe.exec(line)) !== null) {
			urlRanges.push([m.index, m.index + m[0].length]);
		}

		const pathRe = new RegExp(CODE_PATH_BARE_REGEX.source, "g");
		while ((m = pathRe.exec(line)) !== null) {
			const start = m.index;
			const end = start + m[0].length;
			const prev = start === 0 ? "" : line[start - 1];
			if (/\w/.test(prev)) continue;
			const overlapsUrl = urlRanges.some(
				([s, e]) => start < e && end > s,
			);
			if (overlapsUrl) continue;
			if (!isCodeFilePathStrict(m[0])) continue;
			candidates.add(m[0].replace(/#.*$/, ""));
		}
	}

	return Array.from(candidates);
}