elk/plugins/setup-font-size.ts

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import type { FontSize } from '~/composables/settings'
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import { COOKIE_KEY_FONT_SIZE, COOKIE_MAX_AGE, DEFAULT_FONT_SIZE } from '~/constants'
import { fontSizeMap } from '~/constants/options'
export default defineNuxtPlugin(() => {
const userSettings = useUserSettings()
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const cookieFontSize = useCookie<FontSize>(COOKIE_KEY_FONT_SIZE, { default: () => DEFAULT_FONT_SIZE, maxAge: COOKIE_MAX_AGE })
if (!cookieFontSize.value || !fontSizeMap[cookieFontSize.value])
cookieFontSize.value = DEFAULT_FONT_SIZE
if (process.server) {
userSettings.value.fontSize = cookieFontSize.value
useHead({
style: [
{ innerHTML: `:root { --font-size: ${fontSizeMap[cookieFontSize.value]}; }` },
],
})
return
}
userSettings.value.fontSize = cookieFontSize.value
watch(() => userSettings.value.fontSize, (size) => {
document.documentElement.style.setProperty('--font-size', fontSizeMap[size])
cookieFontSize.value = size
}, { immediate: true })
})