fixup! fs: introduce readJSON functions

Author: targos

test/doctool/test-doctool-versions.js

@@ -37,7 +37,7 @@ debuglog(cp.stdout);
 assert.strictEqual(cp.stdout, '');
 assert.strictEqual(cp.signal, null);
 assert.strictEqual(cp.status, 0);
-const versions = fs.readJSONSync(versionsFile);
+const versions = JSON.parse(fs.readFileSync(versionsFile));
 debuglog(versions);
 
 // Coherence checks for each returned version.