44 lines
1.4 KiB
TypeScript
44 lines
1.4 KiB
TypeScript
// Ported from [Nuxt](https://github.com/nuxt/nuxt/blob/main/packages/nuxt/src/app/composables/cookie.ts)
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import type { CookieParseOptions, CookieSerializeOptions } from 'cookie-es'
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import { parse, serialize } from 'cookie-es'
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import { destr } from 'destr'
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type _CookieOptions = Omit<CookieSerializeOptions & CookieParseOptions, 'decode' | 'encode'>
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export interface CookieOptions<T = any> extends _CookieOptions {
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decode?(value: string): T
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encode?(value: T): string
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default?: () => T | Ref<T>
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watch?: boolean | 'shallow'
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}
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export type CookieRef<T> = Ref<T>
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const CookieDefaults: CookieOptions<any> = {
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path: '/',
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watch: true,
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decode: val => destr(decodeURIComponent(val)),
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encode: val => encodeURIComponent(typeof val === 'string' ? val : JSON.stringify(val)),
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}
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export const useCookie = <T = string | null | undefined>(name: string, _opts?: CookieOptions<T>): CookieRef<T> => {
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const opts = { ...CookieDefaults, ..._opts || {} }
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const cookies = parse(document.cookie, opts)
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const cookie = ref<T | undefined>(cookies[name] as any ?? opts.default?.())
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watch(cookie, () => {
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document.cookie = serializeCookie(name, cookie.value, opts)
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})
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return cookie as CookieRef<T>
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}
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function serializeCookie(name: string, value: any, opts: CookieSerializeOptions = {}) {
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if (value === null || value === undefined)
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return serialize(name, value, { ...opts, maxAge: -1 })
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return serialize(name, value, { ...opts, maxAge: 60 * 60 * 24 * 30 })
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}
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