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import * as path from "node:path";
import { parse } from "smol-toml";
import type { SkillDefinition, SkillDirectory, SkillScope } from "../types/index.js";
const FRONTMATTER_DELIMITER = "+++";
export function parseSkillFile(
filePath: string,
content: string,
scope: SkillScope,
directory: SkillDirectory,
): SkillDefinition {
const defaultName = path.basename(filePath, path.extname(filePath));
let name = defaultName;
let description = "";
let tags: string[] = [];
let body = content;
// Check for TOML frontmatter
const trimmed = content.trimStart();
if (trimmed.startsWith(FRONTMATTER_DELIMITER)) {
const afterOpen = trimmed.slice(FRONTMATTER_DELIMITER.length);
// Find the closing +++
const closeIndex = afterOpen.indexOf(FRONTMATTER_DELIMITER);
if (closeIndex !== -1) {
const tomlSource = afterOpen.slice(0, closeIndex);
body = afterOpen.slice(closeIndex + FRONTMATTER_DELIMITER.length);
try {
const frontmatter = parse(tomlSource);
if (typeof frontmatter.name === "string") {
name = frontmatter.name;
}
if (typeof frontmatter.description === "string") {
description = frontmatter.description;
}
if (Array.isArray(frontmatter.tags)) {
tags = (frontmatter.tags as unknown[]).filter((t): t is string => typeof t === "string");
}
} catch {
// Malformed TOML — fall through with defaults
}
}
}
// Trim leading newline from body (handles both LF and CRLF)
body = body.replace(/^\r?\n/, "");
return {
name,
description,
tags,
content: body,
scope,
source: filePath,
directory,
};
}
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