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export function getCookie(name: string): string | null {
if (typeof document === 'undefined') {
return null;
}
const prefix = `${name}=`;
const cookie = document.cookie
.split(';')
.map((value) => value.trimStart())
.filter((value) => value.startsWith(prefix))[0];
if (!cookie) {
return null;
}
return cookie.substr(prefix.length);
}
export function setCookie(
name: string,
value: string,
domain: string,
expires = 0,
path = '/',
): void {
if (typeof document === 'undefined') {
return undefined;
}
// Get any potential existing instances of this particular cookie
const existingCookie = getCookie(name);
let cookieValue = value;
if (existingCookie) {
// If exisitng cookie name does not include the value we are trying to set,
// then add it, otherwise use the existing cookie value
cookieValue = !existingCookie.includes(value)
? `${existingCookie}+${value}`
: existingCookie;
}
let cookieString = `${name}=${cookieValue}; path=${path}; domain=${domain};`;
if (expires) {
const date = new Date();
date.setTime(date.getTime() + expires * 24 * 60 * 60 * 1000);
cookieString += ` expires=${date.toUTCString()};`;
}
document.cookie = cookieString;
// Returning undefined because of ESLint's "consistent-return" rule
return undefined;
}
export function clearCookie(name: string, domain: string, path = '/'): void {
if (typeof document === 'undefined') {
return undefined;
}
// Get any potential existing instances of this particular cookie
const existingCookie = getCookie(name);
if (existingCookie) {
// Set the cookie's expiration date to a past date
setCookie(name, '', domain, -1, path);
}
return undefined;
}
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