export declare const parseExpressionWidget: import("../parser-types").Parser<import("../general-purpose-parsers/object-types").OptionalizeProperties<{
    type: "expression";
    static: boolean | undefined;
    graded: boolean | undefined;
    alignment: "default" | "block" | "inline-block" | "inline" | "wrap-left" | "wrap-right" | "full-width" | undefined;
    options: import("../general-purpose-parsers/object-types").OptionalizeProperties<{
        answerForms: {
            value: string;
            form: boolean;
            simplify: boolean;
            considered: "correct" | "wrong" | "ungraded";
            key?: string | undefined;
        }[];
        functions: string[];
        times: boolean;
        visibleLabel: string | undefined;
        ariaLabel: string | undefined;
        buttonSets: ("scientific" | "basic" | "basic+div" | "trig" | "prealgebra" | "logarithms" | "basic relations" | "advanced relations")[];
        buttonsVisible: "always" | "never" | "focused" | undefined;
        extraKeys: ("PLUS" | "MINUS" | "NEGATIVE" | "TIMES" | "DIVIDE" | "DECIMAL" | "PERIOD" | "PERCENT" | "CDOT" | "EQUAL" | "NEQ" | "GT" | "LT" | "GEQ" | "LEQ" | "FRAC_INCLUSIVE" | "FRAC_EXCLUSIVE" | "FRAC" | "EXP" | "EXP_2" | "EXP_3" | "SUB" | "SQRT" | "CUBE_ROOT" | "RADICAL" | "LEFT_PAREN" | "RIGHT_PAREN" | "LN" | "LOG" | "LOG_N" | "SIN" | "COS" | "TAN" | "PI" | "THETA" | "UP" | "RIGHT" | "DOWN" | "LEFT" | "BACKSPACE" | "DISMISS" | "JUMP_OUT_PARENTHESES" | "JUMP_OUT_EXPONENT" | "JUMP_OUT_BASE" | "JUMP_INTO_NUMERATOR" | "JUMP_OUT_NUMERATOR" | "JUMP_OUT_DENOMINATOR" | "NUM_0" | "NUM_1" | "NUM_2" | "NUM_3" | "NUM_4" | "NUM_5" | "NUM_6" | "NUM_7" | "NUM_8" | "NUM_9" | "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" | "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" | "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z" | "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" | "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" | "S" | "T" | "U" | "V" | "W" | "X" | "Y" | "Z")[] | undefined;
    }>;
    key: number | null | undefined;
    version: {
        major: number;
        minor: number;
    } | undefined;
}>>;