init hook types

[aphilas]

How can I add types to the got instance when using the init hook?

https://github.com/sindresorhus/got/blob/main/documentation/9-hooks.md#init

import got from 'got';

const instance = got.extend({
	hooks: {
		init: [
			(plain, options) => {
				if ('secret' in plain) {
					options.context.secret = plain.secret;
					delete plain.secret;
				}
			}
		],
		beforeRequest: [
			options => {
				options.headers.secret = options.context.secret;
			}
		]
	}
});

const {headers} = await instance(
	'https://httpbin.org/anything',
	{
        // TS error: 'secret' does not exist in type 'OptionsInit'
		secret: 'passphrase' 
	}
).json();

console.log(headers.Secret);

[szmarczak]

Duplicate of #1117