interface EscapeSequence {
    value: string;
    size: number;
}
interface LocationOffset {
    line: number;
    column: number;
}
export declare class Source {
    body: string;
    name: string;
    locationOffset: LocationOffset;
    static isSource(source: unknown): source is Source;
    constructor(body: string, name?: string, locationOffset?: LocationOffset);
    get [Symbol.toStringTag](): string;
    readDigits(start: number, firstCode: number): number;
    readEscapedCharacter(position: number): EscapeSequence;
    readEscapedUnicodeFixedWidth(position: number): EscapeSequence;
    readEscapedUnicodeVariableWidth(position: number): EscapeSequence;
    printCodePointAt(position: number): string;
    syntaxError(position: number, description: string): Error;
}
export {};