import { BigNumberish } from "ethers";
export declare function hexJoin(hexStrings: string[]): string;
export declare function remove0x(hexString: string): string;
export declare function encodeVLQ(x: BigNumberish): string;
export declare function encodePseudoFloat(x: BigNumberish): string;
export declare function encodeRegIndex(regIndex: BigNumberish): string;
/**
 * Bit streams are just the bits of a uint256 encoded as a VLQ.
 * (Technically the encoding is unbounded, but 256 booleans is a lot and it's
 * much easier to just decode the VLQ into a uint256 in the EVM.)
 *
 * Notably, the bits are little endian - the first bit is the *lowest* bit. This
 * is because the lowest bit is clearly the 1-valued bit, but the highest valued
 * bit could be anywhere - there's infinitely many zero-bits to choose from.
 *
 * If it wasn't for this need to be little endian, we'd definitely use big
 * endian (like our other encodings generally do), since that's preferred by the
 * EVM and the ecosystem:
 *
 * ```ts
 * const abi = new ethers.utils.AbiCoder():
 * console.log(abi.encode(["uint"], [0xff]));
 * // 0x00000000000000000000000000000000000000000000000000000000000000ff
 *
 * // If Ethereum used little endian (like x86), it would instead be:
 * // 0xff00000000000000000000000000000000000000000000000000000000000000
 * ```
 */
export declare function encodeBitStream(bitStream: boolean[]): string;
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