/**
 * unmarshalls a required field, first trying it's column name, then trying its
 * camelCase name, and finally, its explicit snake_case name
 **/
export declare function unmarshallRequiredField(item: Record<string, any>, fieldName: string, possibleColumnNames: readonly string[], transform?: (value: any) => any): any;
/**
 * unmarshalls an optional field, first trying it's column name, then trying its
 * camelCase name, and finally, its explicit snake_case name
 */
export declare function unmarshallOptionalField(item: Record<string, any>, 
/**
 * fieldName isn't used here, but keeping this function consistent with
 * unmarshallRequiredField makes other things easier
 */
fieldName: string, possibleColumnNames: readonly string[], transform?: (value: any) => any): any;