/**
 * Map a desired price `step` to Hyperliquid's server-side aggregation hint
 * `(nSigFigs, mantissa)` against the order of magnitude of `referencePrice`
 * (the market's mark price gives the digit count). HL buckets the book to
 * `nSigFigs` significant figures, so the figures resolving a price to `step`
 * granularity are `floor(log10(referencePrice)) - floor(log10(step)) + 1`.
 *
 * Returns `{}` (full precision) when the step is finer than HL's 5-sig-fig
 * grid or the inputs are unusable; clamps to {@link HL_MIN_SIG_FIGS} when the
 * step is coarser than HL's lowest granularity. `mantissa` is emitted only for
 * a non-power-of-ten step that lands on the 5-sig-fig grid, since HL ignores
 * it below `nSigFigs === 5`.
 *
 * @public
 */
export declare function priceStepToAggregation(step: number, referencePrice: number): {
    nSigFigs?: number;
    mantissa?: number;
};
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