forked from vercel/next.js
/
cookies.ts
143 lines (121 loc) · 3.76 KB
/
cookies.ts
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import type { CookieSerializeOptions } from '../types'
import cookie from 'next/dist/compiled/cookie'
type GetWithOptionsOutput = {
value: string | undefined
options: { [key: string]: string }
}
const normalizeCookieOptions = (options: CookieSerializeOptions) => {
options = Object.assign({}, options)
if (options.maxAge) {
options.expires = new Date(Date.now() + options.maxAge * 1000)
}
if (options.path == null) {
options.path = '/'
}
return options
}
const serializeValue = (value: unknown) =>
typeof value === 'object' ? `j:${JSON.stringify(value)}` : String(value)
const serializeExpiredCookie = (
key: string,
options: CookieSerializeOptions = {}
) =>
cookie.serialize(key, '', {
expires: new Date(0),
path: '/',
...options,
})
const deserializeCookie = (input: Request | Response): string[] => {
const value = input.headers.get('set-cookie')
return value !== undefined && value !== null ? value.split(', ') : []
}
const serializeCookie = (input: string[]) => input.join(', ')
export class Cookies extends Map<string, string> {
constructor(input?: string | null) {
const parsedInput = typeof input === 'string' ? cookie.parse(input) : {}
super(Object.entries(parsedInput))
}
set(key: string, value: unknown, options: CookieSerializeOptions = {}) {
return super.set(
key,
cookie.serialize(
key,
serializeValue(value),
normalizeCookieOptions(options)
)
)
}
[Symbol.for('edge-runtime.inspect.custom')]() {
return Object.fromEntries(this.entries())
}
}
export class NextCookies extends Cookies {
response: Request | Response
constructor(response: Request | Response) {
super(response.headers.get('cookie'))
this.response = response
}
get = (...args: Parameters<Cookies['get']>) => {
return this.getWithOptions(...args).value
}
getWithOptions = (
...args: Parameters<Cookies['get']>
): GetWithOptionsOutput => {
const raw = super.get(...args)
if (typeof raw !== 'string') return { value: raw, options: {} }
const { [args[0]]: value, ...options } = cookie.parse(raw)
return { value, options }
}
set = (...args: Parameters<Cookies['set']>) => {
const isAlreadyAdded = super.has(args[0])
super.set(...args)
const currentCookie = super.get(args[0])
if (typeof currentCookie !== 'string') {
throw new Error(
`Invariant: failed to generate cookie for ${JSON.stringify(args)}`
)
}
if (isAlreadyAdded) {
const setCookie = serializeCookie(
deserializeCookie(this.response).filter(
(value) => !value.startsWith(`${args[0]}=`)
)
)
if (setCookie) {
this.response.headers.set(
'set-cookie',
[currentCookie, setCookie].join(', ')
)
} else {
this.response.headers.set('set-cookie', currentCookie)
}
} else {
this.response.headers.append('set-cookie', currentCookie)
}
return this
}
delete = (key: string, options: CookieSerializeOptions = {}) => {
const isDeleted = super.delete(key)
if (isDeleted) {
const setCookie = serializeCookie(
deserializeCookie(this.response).filter(
(value) => !value.startsWith(`${key}=`)
)
)
const expiredCookie = serializeExpiredCookie(key, options)
this.response.headers.set(
'set-cookie',
[expiredCookie, setCookie].join(', ')
)
}
return isDeleted
}
clear = (options: CookieSerializeOptions = {}) => {
const expiredCookies = Array.from(super.keys())
.map((key) => serializeExpiredCookie(key, options))
.join(', ')
if (expiredCookies) this.response.headers.set('set-cookie', expiredCookies)
return super.clear()
}
}
export { CookieSerializeOptions }