```sh npm install --save extra-compatible # or yarn add extra-compatible ```
npm install extra-compatiblesh
npm install --save extra-compatible
or
yarn add extra-compatible
`API
$3
ts
function performanceNow(): number
`$3
ts
function hmacSHA256(secret: string, text: string): Promise
`$3
ts
function sha256(input: string | DataView | TypedArray): Promise
`$3
ts
function sha1(input: string | DataView | TypedArray): Promise
``