export type Shape = "flat" | "geojson" | "columnar";
export interface CompileOptions {
    shape: Shape;
    /** The bound datum parameter name. Default "d" (attribute mode). */
    paramName?: string;
    /** `$field` sugar is attribute-only per spec; script-block mode disables it. */
    allowDollarSugar?: boolean;
    /** Used only for the dev-mode `//# sourceURL` and error messages. */
    debugName?: string;
    /** e.g. "getFillColor" — enables a best-effort static output-shape check. */
    accessorName?: string;
}
export interface CompiledExpression {
    /** The validated, rewritten JS expression text (what `new Function` receives). */
    jsBody: string;
    /**
     * The ready-to-use accessor — `(d) => value` for row shapes. Columnar
     * accessors never read `d`; they read `info.data.columns.<field>[info.index]`
     * from deck.gl's second accessor argument (its non-iterable-data calling
     * convention), which is why `info` is part of the signature.
     */
    fn: (d: unknown, info?: {
        index: number;
        data: unknown;
    }) => unknown;
}
export declare function compileExpression(source: string, opts: CompileOptions): CompiledExpression;