feat: add cookies.getAll

[msonnb]

closes #9263

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[Rich-Harris]

Thank you! Couple of changes I think we need — this logic needs to be reflected (i.e. we only want to include cookies with a valid path etc — if cookies.get('foo') wouldn't return a value, then it shouldn't be included in getAll):

kit/packages/kit/src/runtime/server/cookie.js

Lines 75 to 76 in 90fdfdb

	domain_matches(url.hostname, c.options.domain) &&
	path_matches(url.pathname, c.options.path)

Also, we need to consider existing cookies, not just new ones:

kit/packages/kit/src/runtime/server/cookie.js

Lines 82 to 83 in 90fdfdb

	const req_cookies = parse(header, { decode: decoder });
	const cookie = req_cookies[name]; // the decoded string or undefined

New cookies should take priority though, if cookies.set('foo', ...) was called and there was already a foo cookie in the request header.

[msonnb]

Thank you! Couple of changes I think we need — this logic needs to be reflected (i.e. we only want to include cookies with a valid path etc — if cookies.get('foo') wouldn't return a value, then it shouldn't be included in getAll):

sure, added the checks for domain and path 👍

Also, we need to consider existing cookies, not just new ones:
New cookies should take priority though, if cookies.set('foo', ...) was called and there was already a foo cookie in the request header.

should already work, no? at first we get all existing cookies with parse, then add all new ones and (potentially) override existing keys.

[Rich-Harris]

Ah whoops, I missed that line at the beginning! Thank you

[david-plugge]

Thanks alot!