The default export, which used to be the v4() method but which was already discouraged in v3.x of this library, has been removed.
Explicitly note that deep imports of the different uuid version functions are deprecated and no longer encouraged and that ECMAScript module named imports should be used instead. Emit a deprecation warning for people who deep-require the different algorithm variants.
Remove builtin support for insecure random number generators in the browser. Users who want that will have to supply their own random number generator function.
Remove support for generating v3 and v5 UUIDs in Node.js<4.x
Convert code base to ECMAScript Modules (ESM) and release CommonJS build for node and ESM build for browser bundlers.