Function objEnsure

test/unit/persisters/common/mocks.ts:91–100

(
  obj: {[id: Id]: Value},
  id: Id,
  getDefaultValue: () => Value,
)

};

const objEnsure = <Value>(
  obj: {[id: Id]: Value},
  id: Id,
  getDefaultValue: () => Value,
): Value => {
  if (obj[id] == undefined) {
    obj[id] = getDefaultValue();
  }
  return obj[id] as Value;
};

const docObjMatch = (
  docObjOrParent: {[id: Id]: any},