export type SymbolToken = "!" | "!=" | "%" | "&&" | "(" | ")" | "*" | "+" | "," | "-" | "->" | "." | ".." | "..." | "/" | ":" | ";" | "<" | "<=" | "=" | "==" | "===" | ">" | ">=" | "?" | "??" | "@" | "$" | "[" | "]" | "^" | "{" | "|" | "||" | "}" | "~";
export type Token = {
    type: "AtIdentifier";
    value: string;
    position: number;
    end: number;
} | {
    type: "Boolean";
    value: boolean;
    position: number;
    end: number;
} | {
    type: "EOF";
    position: number;
    end: number;
} | {
    type: "Identifier";
    value: string;
    position: number;
    end: number;
} | {
    type: "Null";
    position: number;
    end: number;
} | {
    type: "Number";
    value: number;
    position: number;
    end: number;
} | {
    type: "Parameter";
    value: string;
    position: number;
    end: number;
} | {
    type: "String";
    value: string;
    position: number;
    end: number;
} | {
    type: SymbolToken;
    position: number;
    end: number;
};
export declare function scan(source: string): Token[];
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