function ensureDataTypeimport { ensureDataType } from "https://deno.land/x/neo@0.0.1-pre.1/backend/util/data.ts"; ensureDataType<T extends DataType>(type: T, ...types: DataType[]): TEnsures that all DataTypes match the type parameter Type ParametersT extends DataTypeParameterstype: TThe target DataType which we want all other types to match ...types: DataType[]An arbitrary number of DataTypes which we want to match type ReturnsTIf successful type otherwise it throws a TypeError