bughelp wanted
Description
When I want to record the user visit time in the header, I found the 0 value cannot set to cookie only if we convert it to string type, but other number type value can be saved.
I create one test to reproduce the issue:
it('when set value to 0', () => {
var cookie = new cookies.Cookie('foo', 0 );
assert.equal(cookie.toHeader(), 'foo=0; path=/; httponly')
}) //this will faile
it('when set value to 1', () => {
var cookie = new cookies.Cookie('foo', 1 );
assert.equal(cookie.toHeader(), 'foo=1; path=/; httponly')
}) //this will pass
And I check the source code found this issue happens because of the index.js L:131
this.value = value || ""
This will convert the 0 to empty string, so I am woundering is this a bug or not, if not, I think we should notice the user we should always put he String type value.