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import Head from 'next/head'
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import { THEMES, THEMES_HASH } from '../lib/constants'
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import Reset from './style/Reset'
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import Font from './style/Font'
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import Typography from './style/Typography'
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const LOCAL_STYLESHEETS = ['one-dark', 'verminal', 'night-owl', 'nord']
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const CDN_STYLESHEETS = THEMES.filter(t => LOCAL_STYLESHEETS.indexOf(t.id) < 0)
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export const StylesheetLink = ({ theme }) => {
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let href
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if (LOCAL_STYLESHEETS.indexOf(theme) > -1) {
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href = `/static/themes/${theme}.css`
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} else {
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const themeDef = THEMES_HASH[theme]
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href = `//cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.2/theme/${themeDef &&
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(themeDef.link || themeDef.id)}.min.css`
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}
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return (
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<Head>
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<link key={href} rel="stylesheet" href={href} />
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</Head>
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)
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}
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export const CodeMirrorLink = () => (
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<Head>
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<link
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key="//cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.2/codemirror.min.css"
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rel="stylesheet"
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href="//cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.2/codemirror.min.css"
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/>
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</Head>
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)
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export const MetaTags = () => (
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<Head>
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<meta charSet="utf-8" />
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<meta httpEquiv="X-UA-Compatible" content="IE=edge" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<meta
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name="description"
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content="Carbon is the easiest way to create and share beautiful images of your source code."
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/>
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<meta name="application-name" content="Carbon" />
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<meta name="twitter:title" content="Carbon" />
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<meta
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name="twitter:description"
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content="Carbon is the easiest way to create and share beautiful images of your source code."
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/>
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<meta name="og:title" content="Carbon" />
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<meta
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name="og:description"
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content="Carbon is the easiest way to create and share beautiful images of your source code."
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/>
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<meta name="og:image" content="/static/banner.png" />
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<meta name="theme-color" content="#121212" />
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<title>Carbon</title>
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<link rel="shortcut icon" href="/static/favicon.ico" />
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<link rel="manifest" href="/static/manifest.json" />
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</Head>
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)
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/*
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* Before supporting <link rel="preload"> verify that it is widely supported in FireFox
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* with out a flag here: https://caniuse.com/#feat=link-rel-preload
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*/
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export default function Meta() {
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const onBrowser = typeof window !== 'undefined'
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return (
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<div className="meta">
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<Head>
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<title>Carbon</title>
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<link rel="stylesheet" href="/static/react-crop.css" />
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</Head>
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<MetaTags />
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<StylesheetLink theme="seti" />
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<CodeMirrorLink />
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{LOCAL_STYLESHEETS.map(id => (
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<StylesheetLink key={id} theme={id} />
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))}
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{onBrowser
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? CDN_STYLESHEETS.map(theme => <StylesheetLink key={theme.id} theme={theme.id} />)
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: null}
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<Reset />
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<Font />
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<Typography />
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<style jsx>
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{`
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.meta {
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display: none;
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}
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`}
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</style>
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</div>
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)
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}
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