roadmap/quartz/components/scripts/darkmode.inline.ts

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const userPref = window.matchMedia('(prefers-color-scheme: light)').matches ? 'light' : 'dark'
const currentTheme = localStorage.getItem('theme') ?? userPref
document.documentElement.setAttribute('saved-theme', currentTheme)
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window.addEventListener('DOMContentLoaded', () => {
const switchTheme = (e: any) => {
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if (e.target.checked) {
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document.documentElement.setAttribute('saved-theme', 'dark')
localStorage.setItem('theme', 'dark')
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}
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else {
document.documentElement.setAttribute('saved-theme', 'light')
localStorage.setItem('theme', 'light')
}
}
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// Darkmode toggle
const toggleSwitch = document.querySelector('#darkmode-toggle') as HTMLInputElement
toggleSwitch.addEventListener('change', switchTheme, false)
if (currentTheme === 'dark') {
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toggleSwitch.checked = true
}
})