Added SameSite option for cookie storage

Firefox warns about not setting this option.
It is now set to Strict by default.

README.md

@@ -242,6 +242,11 @@ var orejimeConfig = {
     // You can provide a custom domain for the Orejime cookie, for example to make it available on every associated subdomains.
     domain: 'mydomain.com',
 
+    // [optional]
+    // Whether the cookie should be shared via cross-site requests.
+    // @see https://web.dev/articles/samesite-cookies-explained
+    sameSite: 'strict',
+
     // [optional]
     // You can provide a custom function to serialize the cookie contents.
     stringify: (contents) => JSON.stringify(contents),

src/core/CookieConsentsRepository.ts

@@ -10,6 +10,7 @@ export default class CookieConsentsRepository implements ConsentsRepository {
 			name: 'eu-consent',
 			domain: undefined,
 			duration: 120,
+			sameSite: 'strict',
 			parse: JSON.parse,
 			stringify: JSON.stringify,
 			...options
@@ -23,8 +24,8 @@ export default class CookieConsentsRepository implements ConsentsRepository {
 	}
 
 	write(consents: ConsentsMap) {
-		const {name, domain, duration, stringify} = this.#options;
-		setCookie(name, stringify(consents), duration, domain);
+		const {name, domain, duration, sameSite, stringify} = this.#options;
+		setCookie(name, stringify(consents), duration, domain, sameSite);
 	}
 
 	clear() {

src/core/types.ts

@@ -1,3 +1,5 @@
+import {CookieSameSite} from './utils/cookies';
+
 export type PurposeCookieProps = [
 	pattern: RegExp,
 	path: string,
@@ -21,6 +23,7 @@ export type CookieOptions = {
 	name: string;
 	domain?: string;
 	duration: number;
+	sameSite?: CookieSameSite;
 	parse: (consents: string) => ConsentsMap;
 	stringify: (consents: ConsentsMap) => string;
 };

src/core/utils/cookies.ts

@@ -1,5 +1,7 @@
 import Cookie from 'js-cookie';
 
+export type CookieSameSite = 'strict' | 'lax' | 'none';
+
 export const getCookieNames = () =>
 	document.cookie.split(';').reduce((names, cookie) => {
 		const [name] = cookie.split('=', 2);
@@ -12,11 +14,13 @@ export const setCookie = (
 	name: string,
 	value = '',
 	days = 0,
-	domain?: string
+	domain?: string,
+	sameSite?: CookieSameSite
 ) => {
 	Cookie.set(name, value, {
 		expires: days,
-		domain
+		domain,
+		sameSite
 	});
 };