/**
 * Format a given Ethereum address to a human-readable representation.
 * @param address The address to format.
 * @param opts.truncateTo The number of characters to include either side of the elipsis (...).
 * @returns The formatted string e.g. 0x0000...0000
 */
export declare function formatEthAddress(address: string, { truncateTo, }?: {
    truncateTo?: number;
}): string;
/**
 * Converts numerical wei to a string representation of Ether.
 * This function wraps viem's formatEther.
 * @see https://viem.sh/docs/utilities/formatEther.html
 * @param wei the Ether value in wei (fixed-point number with 18 decimals)
 * @param opts.fractionDigits The number of
 * @returns
 */
export declare function formatEther(wei: bigint, opts?: {
    fractionDigits?: number;
}): string;
/**
 * Divides a number by a given exponent of base 10 (10^exp), and formats it into a string representation of the number.
 * This function wraps viem's formatUnits.
 * @see https://viem.sh/docs/utilities/formatUnits.html
 * @param value The value to format.
 * @param units The units of the value.
 * @param opts.fractionDigits The number of fraction digits (i.e. decimal places) to format to.
 * @returns Formatted representation of [value].
 */
export declare function formatUnits(value: bigint, units: number, opts?: {
    fractionDigits?: number;
}): string;
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