Bun vs vlt

Bun combines a JavaScript runtime, package manager, test runner, and bundler in one binary. It runs JavaScript and TypeScript on JavaScriptCore, with support for Node.js APIs and node_modules. Its npm-compatible package manager supports workspaces, catalogs, overrides, patches, readable lockfiles, private registry authentication, dependency resolution, and offline installation. The test runner includes Jest-compatible expectations, mocks, snapshots, DOM testing, and coverage. For builds, Bun handles TypeScript, JSX, CSS, and HTML for browsers and servers, and includes a development server with hot module reloading and single-file executables. Built-in APIs cover PostgreSQL, MySQL, SQLite, Redis, S3-compatible storage, HTTP, and WebSockets. The project names Next.js, Remix, Nuxt, Astro, SvelteKit, Hono, and Elysia among frameworks that run on Bun. It is MIT-licensed and developed publicly on GitHub. Bun runs on Linux, macOS, and Windows, subject to minimum OS versions and x64 processors with SSE4.2. Install options include an official script, npm, Homebrew, Windows package managers, and Docker. Support and discussion are available through Discord.

vlt provides npm-compatible JavaScript package registries for teams publishing scoped or private packages and managing organizations and access. It is available as a web service or self-hosted, with a client compatible with vlt, npm, pnpm, yarn, bun, deno and CI publishing. Registry infrastructure uses caching and smaller payloads. Developers can inspect resolved dependency graphs, trace why dependencies exist and query them with selector syntax; the CLI handles installation, publishing, configuration, execution and dependency queries. The registry says it blocks known malware and high-risk software through advisory and malware scanning across a safe npm mirror. Lifecycle scripts are restricted or disabled by default, and risky behavior needs explicit approval. Socket integration identifies dependency security risks. The VSR private registry can run locally or in CI with granular access tokens. TLS 1.2 or later and MFA for high-risk systems are stated security controls. Free costs nothing with 2GB storage and delivery, upstream proxy, user and token management and community support. Pro costs $8 a month, billed annually; Premium costs $20 a month, billed annually; Enterprise costs $79 a month, billed annually. Enterprise+ pricing is custom.