Just a suggestion: some cli-utilities have an -y/--yes/--assume-yes flag for usage in scripts, which automatically accepts all prompt.

I think it would be more intuitive to have this kind of flag.

Looking closely, there's even some code already in place to auto-accept prompts.

src/util.ts:

export function read(prompt: string, options: _read.Options = {}): Promise<string> {
	if (process.env['VSCE_TESTS'] || !process.stdout.isTTY) {
		return Promise.resolve('y');
	}

	return __read({ prompt, ...options });
}

However, VSCE_TESTS is not documented (?) and I don't feel really confident to use it.

Maybe we could add something like VSCE_YES/VSCE_ASSUME_YES env variable?

-	if (process.env['VSCE_TESTS'] || !process.stdout.isTTY) {
+ 	if (process.env['VSCE_ASSUME_YES'] || !process.stdout.isTTY) {