Function writeMcpEntry

src/installer/targets/opencode.ts:189–226

(loc: Location)

}

function writeMcpEntry(loc: Location): WriteResult['files'][number] {
  const file = configPath(loc);
  const existed = fs.existsSync(file);
  let text = readConfigText(file);

  // Seed a minimal opencode config when the file is brand-new so
  // the result is a complete, schema-tagged file (not just a bare
  // `{ "mcp": {...} }`).
  if (!text.trim()) {
    text = '{\n  "$schema": "https://opencode.ai/config.json"\n}\n';
  }

  const config = parseConfig(text);
  const before = config.mcp?.codegraph;
  const after = getOpencodeServerEntry();

  if (jsonDeepEqual(before, after)) {
    return { path: file, action: 'unchanged' };
  }

  // Add $schema if the user's existing file is missing it.
  if (!config.$schema) {
    const schemaEdits = modify(text, ['$schema'], 'https://opencode.ai/config.json', {
      formattingOptions: FORMATTING,
    });
    text = applyEdits(text, schemaEdits);
  }

  // Surgical edit — preserves comments, formatting, and order of
  // every key we don't touch.
  const edits = modify(text, ['mcp', 'codegraph'], after, {
    formattingOptions: FORMATTING,
  });
  const updated = applyEdits(text, edits);
  atomicWriteFileSync(file, updated);

  return { path: file, action: existed ? 'updated' : 'created' };
}

/**
 * Surgically drop `mcp.codegraph` from one config file. Leaves sibling