Detect Block Themes

1import fs from "node:fs";
2import path from "node:path";
3
4const DEFAULT_IGNORES = new Set([
5  ".git",
6  "node_modules",
7  "vendor",
8  "dist",
9  "build",
10  "coverage",
11  ".next",
12  ".turbo",
13]);
14
15function statSafe(p) {
16  try {
17    return fs.statSync(p);
18  } catch {
19    return null;
20  }
21}
22
23function existsDir(p) {
24  const st = statSafe(p);
25  return Boolean(st && st.isDirectory());
26}
27
28function readJsonSafe(p) {
29  try {
30    return JSON.parse(fs.readFileSync(p, "utf8"));
31  } catch {
32    return null;
33  }
34}
35
36function findFilesRecursive(repoRoot, predicate, { maxFiles = 6000, maxDepth = 10 } = {}) {
37  const results = [];
38  const queue = [{ dir: repoRoot, depth: 0 }];
39  let visited = 0;
40
41  while (queue.length > 0) {
42    const { dir, depth } = queue.shift();
43    if (depth > maxDepth) continue;
44
45    let entries;
46    try {
47      entries = fs.readdirSync(dir, { withFileTypes: true });
48    } catch {
49      continue;
50    }
51
52    for (const ent of entries) {
53      const fullPath = path.join(dir, ent.name);
54      if (ent.isDirectory()) {
55        if (DEFAULT_IGNORES.has(ent.name)) continue;
56        queue.push({ dir: fullPath, depth: depth + 1 });
57        continue;
58      }
59      if (!ent.isFile()) continue;
60
61      visited += 1;
62      if (visited > maxFiles) return { results, truncated: true };
63      if (predicate(fullPath)) results.push(fullPath);
64    }
65  }
66
67  return { results, truncated: false };
68}
69
70function summarizeTheme(repoRoot, themeJsonPath) {
71  const json = readJsonSafe(themeJsonPath);
72  const rel = path.relative(repoRoot, themeJsonPath);
73  const rootDir = path.dirname(rel);
74
75  const templatesDir = path.join(repoRoot, rootDir, "templates");
76  const partsDir = path.join(repoRoot, rootDir, "parts");
77  const patternsDir = path.join(repoRoot, rootDir, "patterns");
78  const stylesDir = path.join(repoRoot, rootDir, "styles");
79
80  const hasTemplates = existsDir(templatesDir);
81  const hasParts = existsDir(partsDir);
82
83  return {
84    themeRoot: rootDir,
85    themeJson: rel,
86    version: typeof json?.version === "number" ? json.version : null,
87    hasTemplates,
88    hasParts,
89    hasPatterns: existsDir(patternsDir),
90    hasStyles: existsDir(stylesDir),
91    isBlockTheme: hasTemplates || hasParts,
92  };
93}
94
95function main() {
96  const repoRoot = process.cwd();
97
98  const { results: themeJsonFiles, truncated } = findFilesRecursive(repoRoot, (p) => path.basename(p) === "theme.json", {
99    maxFiles: 8000,
100    maxDepth: 12,
101  });
102
103  const themes = themeJsonFiles.map((p) => summarizeTheme(repoRoot, p));
104
105  const report = {
106    tool: { name: "detect_block_themes", version: "0.1.0" },
107    repoRoot,
108    truncated,
109    count: themes.length,
110    themes,
111  };
112
113  process.stdout.write(`${JSON.stringify(report, null, 2)}\n`);
114}
115
116main();
117