/**
 * Decode a binary-encoded string into a Uint8Array.
 *
 * E.g.: `binStringToBin('0010101001100100')` → `new Uint8Array([42, 100])`
 *
 * Note, this method always completes. If `binaryDigits` is not divisible by 8,
 * the final byte will be parsed as if it were prepended with `0`s (e.g. `1`
 * is interpreted as `00000001`). If `binaryDigits` is potentially malformed,
 * check it with `isBinString` before calling this method.
 *
 * @param validHex - a string of valid, hexadecimal-encoded data
 */
export declare const binStringToBin: (binaryDigits: string) => Uint8Array;
/**
 * Encode a Uint8Array into a binary-encoded string.
 *
 * E.g.: `binToBinString(Uint8Array.from([42, 100]))` → `'0010101001100100'`
 *
 * @param bytes - a Uint8Array to encode
 */
export declare const binToBinString: (bytes: Uint8Array) => string;
/**
 * For use before `binStringToBin`. Returns true if the provided string is a
 * valid binary string (length is divisible by 8 and only uses the characters
 * `0` and `1`).
 * @param maybeBinString - a string to test
 */
export declare const isBinString: (maybeBinString: string) => boolean;
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