elk/plugins/setup-font-size.ts

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import type { FontSize } from '~/types'
import { InjectionKeyFontSize } from '~/constants/symbols'
import { COOKIE_KEY_FONT_SIZE } from '~/constants'
import { fontSizeMap } from '~/constants/options'
export default defineNuxtPlugin((nuxt) => {
const DEFAULT = 'md'
const cookieFontSize = useCookie<FontSize>(COOKIE_KEY_FONT_SIZE, { default: () => DEFAULT })
nuxt.vueApp.provide(InjectionKeyFontSize, cookieFontSize)
if (!process.server) {
watchEffect(() => {
document.documentElement.style.setProperty('--font-size', fontSizeMap[cookieFontSize.value || DEFAULT])
})
}
else {
useHead({
style: [
{
innerHTML: `:root { --font-size: ${fontSizeMap[cookieFontSize.value || DEFAULT]}; }`,
},
],
})
}
})