Cookie keys are not encoded in a way that is compliant with RFC6265

[ScottHamper]

See Issue 17 for background.

encodeURIComponent is currently being used to encode cookie keys. However, this function escapes some characters that are allowed to be in a cookie key, and does not escape some characters that are not allowed to be in a cookie key, as defined by RFC6265.

[gziolo]

I think I have similar issue when trying to get key from cookie:

URIError: malformed URI sequence
Cookies._getKeyValuePairFromCookieString()main_c...s_17.js (wiersz 111)
Cookies._getCookieObjectFromString()main_c...s_17.js (wiersz 92)
Cookies._renewCache()main_c...s_17.js (wiersz 116)
Cookies.get()main_c...s_17.js (wiersz 27)

I will try to find cookie string that causes issue.

[ScottHamper]

Grzegorz,
Your error is likely due to a cookie value being encoded in something other than UTF-8.

See Issue #22

[gziolo]

This time issue was caused by %uFFFD sequence which is the Unicode Replacement Character. This indicates that a given character value cannot be correctly encoded in Unicode.

I solved issue by updating Cookies._getKeyValuePairFromCookieString

with following bits of code:
value: decodeURIComponent(cookieString.substr(separatorIndex + 1).replace(/%uFFFD/gi, ''))