| "use strict"; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = rng; |
| // Unique ID creation requires a high quality random # generator. In the browser we therefore |
| // require the crypto API and do not support built-in fallback to lower quality random number |
| // generators (like Math.random()). |
| let getRandomValues; |
| const rnds8 = new Uint8Array(16); |
| |
| function rng() { |
| // lazy load so that environments that need to polyfill have a chance to do so |
| if (!getRandomValues) { |
| // getRandomValues needs to be invoked in a context where "this" is a Crypto implementation. Also, |
| // find the complete implementation of crypto (msCrypto) on IE11. |
| getRandomValues = typeof crypto !== 'undefined' && crypto.getRandomValues && crypto.getRandomValues.bind(crypto) || typeof msCrypto !== 'undefined' && typeof msCrypto.getRandomValues === 'function' && msCrypto.getRandomValues.bind(msCrypto); |
| |
| if (!getRandomValues) { |
| throw new Error('crypto.getRandomValues() not supported. See https://github.com/uuidjs/uuid#getrandomvalues-not-supported'); |
| } |
| } |
| |
| return getRandomValues(rnds8); |
| } |