feat: detect bun as runtime (#5300)

* feat: detect bun as runtime

* chore: export bun as runtime

* chore: fix test message

packages/build-info/src/runtime/bun.test.ts

@@ -0,0 +1,27 @@
+import { beforeEach, expect, test } from 'vitest'
+
+import { mockFileSystem } from '../../tests/mock-file-system.js'
+import { NodeFS } from '../node/file-system.js'
+import { Project } from '../project.js'
+
+beforeEach((ctx) => {
+  ctx.fs = new NodeFS()
+})
+
+test('detects node when bunfig.toml is present', async ({ fs }) => {
+  const cwd = mockFileSystem({
+    'bunfig.toml': '',
+  })
+
+  const detected = await new Project(fs, cwd).detectRuntime()
+  expect(detected[0].name).toBe('Bun')
+})
+
+test('detects node when bun.lockb is present', async ({ fs }) => {
+  const cwd = mockFileSystem({
+    'bun.lockb': '',
+  })
+
+  const detected = await new Project(fs, cwd).detectRuntime()
+  expect(detected[0].name).toBe('Bun')
+})

packages/build-info/src/runtime/bun.ts

@@ -0,0 +1,7 @@
+import { LangRuntime } from './runtime.js'
+
+export class Bun extends LangRuntime {
+  id = 'bun'
+  name = 'Bun'
+  configFiles = ['bun.lockb', 'bunfig.toml']
+}

packages/build-info/src/runtime/index.ts

@@ -1,4 +1,5 @@
 import { Brew } from './brew.js'
+import { Bun } from './bun.js'
 import { Emacs } from './cask.js'
 import { Go } from './go.js'
 import { Java } from './java.js'
@@ -9,4 +10,4 @@ import { Ruby } from './ruby.js'
 import { Rust } from './rust.js'
 import { Swift } from './swift.js'
 
-export const runtimes = [Node, Ruby, Brew, Emacs, Go, Java, Php, Rust, Swift, Python]
+export const runtimes = [Node, Ruby, Brew, Bun, Emacs, Go, Java, Php, Rust, Swift, Python]