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import type { VersionInfo } from '../../server/dev/parse-version-info'
export function getStaleness({ installed, staleness, expected }: VersionInfo) {
let text = ''
let title = ''
let indicatorClass = ''
const versionLabel = `Next.js ${installed}`
switch (staleness) {
case 'newer-than-npm':
case 'fresh':
text = versionLabel
title = `Latest available version is detected (${installed}).`
indicatorClass = 'fresh'
break
case 'stale-patch':
case 'stale-minor':
text = `${versionLabel} (stale)`
title = `There is a newer version (${expected}) available, upgrade recommended! `
indicatorClass = 'stale'
break
case 'stale-major': {
text = `${versionLabel} (outdated)`
title = `An outdated version detected (latest is ${expected}), upgrade is highly recommended!`
indicatorClass = 'outdated'
break
}
case 'stale-prerelease': {
text = `${versionLabel} (stale)`
title = `There is a newer canary version (${expected}) available, please upgrade! `
indicatorClass = 'stale'
break
}
case 'unknown':
text = `${versionLabel} (unknown)`
title = 'No Next.js version data was found.'
indicatorClass = 'unknown'
break
default:
break
}
return { text, indicatorClass, title }
}
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