/**

* Calculate the SHA-256 hash of a string using a provided instance of SubtleCrypto

* (e.g. window.crypto.subtle).

*

* Requires `.digest()` to be available on the SubtleCrypto instance.

*

* Defaults to globalThis.crypto.subtle if available.

*

* // https://stackoverflow.com/a/48161723/54547

*

* @param {Function} subtleCrypto

* @param {string} message

* @returns {Promise<string>}

*/

export async function sha256(message, subtleCrypto = globalThis?.crypto?.subtle) {

// encode as UTF-8

const messageBuffer = new TextEncoder().encode(message);

// hash the message

const hashBuffer = await subtleCrypto.digest('SHA-256', messageBuffer);

// convert ArrayBuffer to Array

const hashArray = [...new Uint8Array(hashBuffer)];

// convert bytes to hex string

const hashHex = hashArray.map((b) => b.toString(16).padStart(2, '0')).join('');

return hashHex;

}