Function requireOptionalPackage

node/opencc.js:33–42

(packageName)

const packageRoot = path.join(__dirname, '..');

function requireOptionalPackage(packageName) {
  try {
    return require(packageName);
  } catch (error) {
    if (error && error.code === 'MODULE_NOT_FOUND') {
      return null;
    }
    throw error;
  }
}

function resolveBindingPath() {
  // The addon is always named opencc.node and ships either as a local build