const testAPI = function(){ "use strict"; function bufferToString(hash){ const chunks = []; (new Uint32Array(hash)).forEach(function(num){ chunks.push(num.toString(16)); }); return chunks.map(function(chunk){ return "0".repeat(8 - chunk.length) + chunk; }).join(""); } return { hash: async function(input){ const buffer = ((typeof input) === "string")? new TextEncoder("utf-8").encode(input): input; const hash = await crypto.subtle.digest("SHA-256", buffer); return bufferToString(hash); } }; }();