Miniflare v5 prepares Cloudflare local development tooling for the upcoming cf CLI. Miniflare powers local Workers development behind wrangler dev , the Cloudflare Vite plugin, and @cloudflare/vitest-plugin . Most projects should use those tools instead of depending on Miniflare directly, and Miniflare v5 will not require any action.
Workers - Miniflare v5 prepares local development for the cf CLI
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September 8, 2026
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cloudflare