export declare const NO_DUPLICATES_FIELD = 0;
export declare const COMMA_DELIMITED_FIELD = 1;
export declare const SEMICOLON_DELIMITED_FIELD = 2;
export declare const ARRAY_FIELD = 3;
export type FIELD_FLAG = typeof NO_DUPLICATES_FIELD | typeof COMMA_DELIMITED_FIELD | typeof SEMICOLON_DELIMITED_FIELD | typeof ARRAY_FIELD;
export declare function matchKnownFields(field: string): [string, FIELD_FLAG];