Example given doesn't run

[rao-anant]

Hello,

I copied the source given under
"Example: Dereferencing Remote References with Resolvers" to example.js

I ran it like so:
node example.js

I get the following error:
async resolve(ref: uri.URI) {
^
SyntaxError: Unexpected token ':'
at ESMLoader.moduleStrategy (node:internal/modules/esm/translators:119:18)
at ESMLoader.moduleProvider (node:internal/modules/esm/loader:475:14)
at async link (node:internal/modules/esm/module_job:67:21)

---

My env:
json-ref-resolver ver: 3.1.5
node: v16.17.0
npm: 8.15.0
OS: Ubuntu