USVString type definition

TypeScript Version: 3.2.0-dev.201xxxxx

Search Terms:
USVString

Code

function example(uri: USVString) {
    // Do some work
}

Expected behavior:
Until typescript version 3.0.3 USVString used to be an existing type defined in lib.dom.d.ts
in version 3.1, according to the breaking changes page, some vendor-specific types are removed from lib.d.ts, a full list of removed types is included.
USVString is not on that list, yet it's type definition was also removed.

USVString is defined under webIDL, as can be seen here.

Actual behavior:
error TS2304: Cannot find name 'USVString'.

Inizia con le modifiche a lib.dom.d.ts tra TypeScript 3.0.3 e 3.1, quindi confrontale con l’elenco delle modifiche incompatibili di TypeScript 3.1 e con la definizione WebIDL collegata nell’issue. Verifica la gestione prevista di un parametro di funzione tipizzato come USVString e conferma che la dichiarazione risultante non produca più TS2304.