Function decorateWithReadConcern

src/utils.ts:201–217

(
  command: Document,
  coll: { s: { readConcern?: ReadConcern } },
  options?: OperationOptions
)

 * @param coll - the parent collection of the operation calling this method
 */
export function decorateWithReadConcern(
  command: Document,
  coll: { s: { readConcern?: ReadConcern } },
  options?: OperationOptions
): void {
  if (options && options.session && options.session.inTransaction()) {
    return;
  }
  const readConcern = Object.assign({}, command.readConcern || {});
  if (coll.s.readConcern) {
    Object.assign(readConcern, coll.s.readConcern);
  }

  if (Object.keys(readConcern).length > 0) {
    Object.assign(command, { readConcern: readConcern });
  }
}

/**
 * @internal