export declare const characterCodes: {
    EOF: number;
    SPACE: number;
    BANG: number;
    DOUBLEQUOTE: number;
    OPENING_BRACKET: number;
    CLOSING_BRACKET: number;
    ASTERISK: number;
    COMMA: number;
    DASH: number;
    DOT: number;
    EQUALS: number;
    BACKSLASH: number;
};
export declare const durationUnitChars: string[];