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type Algorithm = {  name: string  alias: string}
type Data = string | boolean | number | object | ArrayBufferView | ArrayBuffer | ReadableStream
export const sha256 = async (data: Data) => {  const algorithm: Algorithm = { name: 'SHA-256', alias: 'sha256' }  const hash = await createHash(data, algorithm)  return hash}
export const sha1 = async (data: Data) => {  const algorithm: Algorithm = { name: 'SHA-1', alias: 'sha1' }  const hash = await createHash(data, algorithm)  return hash}
export const md5 = async (data: Data) => {  const algorithm: Algorithm = { name: 'MD5', alias: 'md5' }  const hash = await createHash(data, algorithm)  return hash}
export const createHash = async (data: Data, algorithm: Algorithm): Promise<string | null> => {  let sourceBuffer: ArrayBufferView | ArrayBuffer
  if (data instanceof ReadableStream) {    let body = ''    const reader = data.getReader()    await reader?.read().then(async (chuck) => {      const value = await createHash(chuck.value || '', algorithm)      body += value    })    return body  }  if (ArrayBuffer.isView(data) || data instanceof ArrayBuffer) {    sourceBuffer = data  } else {    if (typeof data === 'object') {      data = JSON.stringify(data)    }    sourceBuffer = new TextEncoder().encode(String(data))  }
  if (crypto && crypto.subtle) {    const buffer = await crypto.subtle.digest(      {        name: algorithm.name,      },      sourceBuffer as ArrayBuffer    )    const hash = Array.prototype.map      .call(new Uint8Array(buffer), (x) => ('00' + x.toString(16)).slice(-2))      .join('')    return hash  }  return null}