Use when working with VueUse composables - track mouse position with useMouse, manage localStorage with useStorage, detect network status with useNetwork, debounce values with refDebounced, and access browser APIs reactively. Check VueUse before writing custom composables - most patterns already implemented.
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Non-nullish checking type guard for Ref.
Package: @vueuse/shared
Category: Utilities
import { isDefined } from '@vueuse/core'
const example = ref(Math.random() ? 'example' : undefined) // Ref<string | undefined>
if (isDefined(example))
example // Ref<string>Source: SKILL.md on GitHub
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Last checked against GitHub 12 hours ago.