Typescript compilation fails on 4.0.0, Cannot find name 'this'

[yairiff]

Describe the bug

Typescript fail to compile, that is a simple error that can be fixed in a patch

node_modules/whatsapp-api-js/lib/types/index.d.ts:155:139 - error TS2304: Cannot find name 'this'.

155 broadcastMessage(phoneID: string, to: string[], message: ClientMessage, batch_size?: number, delay?: number): Array<ReturnType<typeof this.sendMessage>>;

Expected behavior tsc should pass...

Desktop (please complete the following information):

• OS: Windows
• Runtime node@20
• Library Version 4.0.0