export interface ParseOptions {
    filename?: string;
    startRule?: "start";
    tracer?: any;
    [key: string]: any;
}
export type ParseFunction = <Options extends ParseOptions>(input: string, options?: Options) => Options extends {
    startRule: infer StartRule;
} ? StartRule extends "start" ? Start : Start : Start;
export type Start = Selector | null;
export type Operator = "/" | ",";
export type Combinator = "+" | ">";
export type Property = IDENT;
export type Selector = {
    type: "Selector";
    combinator: Combinator;
    left: SimpleSelector;
    right: Selector;
} | {
    type: "Selector";
    combinator: " ";
    left: SimpleSelector;
    right: Selector;
} | SimpleSelector;
export type SimpleSelector = {
    type: "SimpleSelector";
    element: ElementName;
    qualifiers: (Id | Class | Attrib | Pseudo)[];
} | {
    type: "SimpleSelector";
    element: "*";
    qualifiers: (Id | Class | Attrib | Pseudo)[];
};
export type Id = {
    type: "IDSelector";
    id: HASH;
};
export type Class = {
    type: "ClassSelector";
    class: IDENT;
};
export type ElementName = IDENT | "*";
export type Attrib = {
    type: "AttributeSelector";
    attribute: IDENT;
    operator: string | null;
    value: string | null;
};
export type Pseudo = {
    type: "PseudoSelector";
    value: {
        type: "Function";
        name: FUNCTION;
        params: IDENT[];
    } | IDENT;
};
export type H_1 = string;
export type Nonascii = string;
export type Unicode = string;
export type Escape = Unicode | string;
export type Nmstart = string | Nonascii | Escape;
export type Nmchar = string | Nonascii | Escape;
export type String1 = string;
export type String2 = string;
export type Comment = ["/*", string[], "*"[], [string, string[], "*"[]][], "/"];
export type Ident = string;
export type Name = string;
export type Num = number;
export type String_1 = String1 | String2;
export type Url = string;
export type S_1 = string[];
export type W = S_1 | null;
export type Nl = "\n" | "\r\n" | "\r" | "\f";
export type A = string | "a";
export type C = string | "c";
export type D = string | "d";
export type E = string | "e";
export type G = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "g";
export type H = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "h";
export type I = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "i";
export type K = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "k";
export type L = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "l";
export type M = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "m";
export type N = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "n";
export type O = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "o";
export type P = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "p";
export type R = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "r";
export type S_2 = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "s";
export type T = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "t";
export type U = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "u";
export type X = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "x";
export type Z = string | [
    "\\",
    "0" | null,
    "0" | null,
    "0" | null,
    "0" | null,
    string,
    ("\r\n" | string) | null
] | "z";
export type S = [Comment[], S_1];
export type CDO = [Comment[], "<!--"];
export type CDC = [Comment[], "-->"];
export type INCLUDES = [Comment[], "~="];
export type DASHMATCH = [Comment[], "|="];
export type STRING = String_1;
export type IDENT = Ident;
export type HASH = string;
export type IMPORTSYM = [Comment[], "@", I, M, P, O, R, T];
export type PAGESYM = [Comment[], "@", P, A, G, E];
export type MEDIASYM = [Comment[], "@", M, E, D, I, A];
export type CHARSETSYM = [Comment[], "@charset "];
export type IMPORTANTSYM = [
    Comment[],
    "!",
    (S_1 | Comment)[],
    I,
    M,
    P,
    O,
    R,
    T,
    A,
    N,
    T
];
export type EMS = {
    value: Num;
    unit: "em";
};
export type EXS = {
    value: Num;
    unit: "ex";
};
export type LENGTH = {
    value: Num;
    unit: "px";
} | {
    value: Num;
    unit: "cm";
} | {
    value: Num;
    unit: "mm";
} | {
    value: Num;
    unit: "in";
} | {
    value: Num;
    unit: "pt";
} | {
    value: Num;
    unit: "pc";
};
export type ANGLE = {
    value: Num;
    unit: "deg";
} | {
    value: Num;
    unit: "rad";
} | {
    value: Num;
    unit: "grad";
};
export type TIME = {
    value: Num;
    unit: "ms";
} | {
    value: Num;
    unit: "s";
};
export type FREQ = {
    value: Num;
    unit: "hz";
} | {
    value: Num;
    unit: "kh";
};
export type PERCENTAGE = {
    value: Num;
    unit: "%";
};
export type NUMBER = {
    value: Num;
    unit: null;
};
export type URI = String_1 | Url;
export type FUNCTION = Ident;
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