Function jsToMap

packages/decap-cms-lib-util/src/Cursor.ts:30–39

(obj: {})

type ActionHandler = (action: string) => unknown;

function jsToMap(obj: {}) {
  if (obj === undefined) {
    return Map();
  }
  const immutableObj = fromJS(obj);
  if (!Map.isMap(immutableObj)) {
    throw new Error('Object must be equivalent to a Map.');
  }
  return immutableObj;
}

const knownMetaKeys = Set([
  'index',