Support Bun as runtime for loading vite.config.ts in vp lint

[sagar-dev04]

Description

As a developer using Vite+ with Bun as my package manager, I want vp lint to
use Bun to load vite.config.ts so that Node.js is not required in my toolchain.

Currently vp lint is the only command in the entire Vite+ toolchain that
requires Node.js >=22.18.0. Everything else — vp build, vp dev, vp fmt,
vp staged, vp install — works entirely through Bun when bun.lock is present.

Error seen when Node < 22.18.0:

TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts"
TypeScript config files require Node.js ^20.19.0 || >=22.18.0.
Detected Node.js v22.15.1.

This forces Bun-first projects to maintain a Node installation solely for
vp lint config loading, which defeats the purpose of a unified Bun toolchain.

Suggested solution

When bun.lock or bun.lockb is detected in the workspace root (the same
detection logic already used by vp install), use Bun instead of Node to
load vite.config.ts for lint configuration.

Alternatively, respect a VP_ACTIVE_NODE or VP_CONFIG_RUNTIME environment
variable that lets users specify which binary to use for config loading.

We tested symlinking bun as node in PATH — vp lint ran correctly with Bun
as the runtime, suggesting there is no real incompatibility, only a hardcoded
node binary lookup.

Alternative

Use .oxlintrc.json instead of vite.config.ts for lint config — this bypasses
Node entirely since Oxlint reads JSON natively. However the official Vite+ docs
explicitly state "We do not recommend using .oxlintrc.json with Vite+",
so this is not a proper solution for users following the recommended setup.

Additional context

Environment:

• Package manager: Bun 1.3.10 (bun.lock present)
• vite-plus: 0.1.20
• OS: macOS darwin-arm64
• Node currently required: v25.9.0 (used only for this one step)

All other vp commands use Bun correctly:

Command	Runtime	Works without Node?
vp install	Bun (delegates via bun.lock detection)	✅
vp build / vp dev	Bun loads vite.config.ts	✅
vp fmt	Pure Rust, no runtime needed	✅
vp staged	Bun orchestrates the hook	✅
vp lint	Requires Node >=22.18.0 to load vite.config.ts	❌

vp lint is the only outlier. Making it consistent with the rest of the
toolchain would allow Bun-first projects to run entirely without Node.

Validations

• Read the Contributing Guidelines.
• Confirm this request is for Vite+ itself and not for Vite, Vitest, tsdown, Rolldown, or Oxc.
• Check that there isn't already an issue requesting the same feature.

[fengmk2]

Detected Node.js v22.15.1 From the error log, it appears you are using a version that does not meet the requirements.

[camc314]

note if you want to run oxlint with bun rather than node js, you have to do bun --bun oxlint. doing bun oxlint just invokes the file in node_modules/.bin/oxlint which has a hasbang pointing to node. The --bun flag overrides this behaviour.

But as fengmk2 said, the issue here is that your not using a new enough node version to support dynamic configs.