import { HashFunction , instantiateRustWasm , sha1Base64Bytes } from '../bin/bin' ; import { base64ToBin } from '../format/format' ; export interface Sha1 extends HashFunction { param rawState readonly final : ( rawState : Uint8Array ) => Uint8Array ; param input readonly hash : ( input : Uint8Array ) => Uint8Array ; /**
     * Begin an incremental sha1 hashing computation.
     *
     * The returned raw state can be provided to `update` with additional input to
     * advance the computation.
     *
     * ## Example
     * ```ts
     * const state1 = sha1.init();
     * const state2 = sha1.update(state1, new Uint8Array([1, 2, 3]));
     * const state3 = sha1.update(state2, new Uint8Array([4, 5, 6]));
     * const hash = sha1.final(state3);
     * ```
     */ readonly init : ( ) => Uint8Array ; param rawState param input readonly update : ( rawState : Uint8Array , input : Uint8Array ) => Uint8Array ; } param webassemblyBytes export const instantiateSha1Bytes = async ( webassemblyBytes ) : Promise < Sha1 > => { const wasm = await instantiateRustWasm ( webassemblyBytes , './sha1' , 'sha1' , 'sha1_init' , 'sha1_update' , 'sha1_final' ) ; return { final : wasm . final , hash : wasm . hash , init : wasm . init , update : wasm . update , } ; } ; export const getEmbeddedSha1Binary = ( ) : ArrayBuffer => base64ToBin ( sha1Base64Bytes ) . buffer ; const cachedSha1 = { } ; /**
 * An ultimately-portable (but slower) version of `instantiateSha1Bytes`
 * which does not require the consumer to provide the sha1 binary buffer.
 */ export const instantiateSha1 = async ( ) : Promise < Sha1 > => { if ( cachedSha1 . cache !== undefined ) { return cachedSha1 . cache ; } const result = instantiateSha1Bytes ( getEmbeddedSha1Binary ( ) ) ; cachedSha1 . cache = result ; return result ; } ;