feat: export getBunGlobalPrefix from crawlers module (#25)

* feat: add bun global package support

- Add getBunGlobalPrefix() function to detect bun's global package path
- Update getGlobalNodeModulesPaths() to include pnpm, yarn, and bun paths
- Export getBunGlobalPrefix() for external use

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* feat: export getBunGlobalPrefix from crawlers module

Export the getBunGlobalPrefix function to allow checking bun's global
package prefix. Also adds test coverage for the export.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: mikolalysenko

src/commands/scan.test.ts

@@ -436,11 +436,13 @@ describe('crawlers module', () => {
         getNpmGlobalPrefix,
         getYarnGlobalPrefix,
         getPnpmGlobalPrefix,
+        getBunGlobalPrefix,
       } = await import('../crawlers/index.js')
 
       assert.equal(typeof getNpmGlobalPrefix, 'function')
       assert.equal(typeof getYarnGlobalPrefix, 'function')
       assert.equal(typeof getPnpmGlobalPrefix, 'function')
+      assert.equal(typeof getBunGlobalPrefix, 'function')
     })
   })
 })

src/crawlers/index.ts

@@ -4,4 +4,5 @@ export {
   getNpmGlobalPrefix,
   getYarnGlobalPrefix,
   getPnpmGlobalPrefix,
+  getBunGlobalPrefix,
 } from './npm-crawler.js'

src/crawlers/npm-crawler.ts

@@ -104,6 +104,22 @@ function getPnpmGlobalPrefix(): string | null {
   }
 }
 
+/**
+ * Get the bun global node_modules path
+ */
+function getBunGlobalPrefix(): string | null {
+  try {
+    const binPath = execSync('bun pm bin -g', {
+      encoding: 'utf-8',
+      stdio: ['pipe', 'pipe', 'pipe'],
+    }).trim()
+    const bunRoot = path.dirname(binPath)
+    return path.join(bunRoot, 'install', 'global', 'node_modules')
+  } catch {
+    return null
+  }
+}
+
 /**
  * NPM ecosystem crawler for discovering packages in node_modules
  */
@@ -150,6 +166,12 @@ export class NpmCrawler {
       paths.push(yarnPath)
     }
 
+    // Try bun global path
+    const bunPath = getBunGlobalPrefix()
+    if (bunPath) {
+      paths.push(bunPath)
+    }
+
     return paths
   }
 
@@ -498,4 +520,9 @@ export class NpmCrawler {
 }
 
 // Re-export global prefix functions for backward compatibility
-export { getNpmGlobalPrefix, getYarnGlobalPrefix, getPnpmGlobalPrefix }
+export {
+  getNpmGlobalPrefix,
+  getYarnGlobalPrefix,
+  getPnpmGlobalPrefix,
+  getBunGlobalPrefix,
+}

src/utils/global-packages.ts

@@ -51,6 +51,23 @@ export function getPnpmGlobalPrefix(): string | null {
   }
 }
 
+/**
+ * Get the bun global node_modules path
+ * @returns The path to bun's global node_modules directory, or null if not available
+ */
+export function getBunGlobalPrefix(): string | null {
+  try {
+    const binPath = execSync('bun pm bin -g', {
+      encoding: 'utf-8',
+      stdio: ['pipe', 'pipe', 'pipe'],
+    }).trim()
+    const bunRoot = path.dirname(binPath)
+    return path.join(bunRoot, 'install', 'global', 'node_modules')
+  } catch {
+    return null
+  }
+}
+
 /**
  * Get the global node_modules path, with support for custom override
  * @param customPrefix - Optional custom path to use instead of auto-detection
@@ -65,15 +82,39 @@ export function getGlobalPrefix(customPrefix?: string): string {
 
 /**
  * Get all global node_modules paths for package lookup
- * Currently returns npm global path, but could be extended for yarn global, etc.
+ * Returns paths from all detected package managers (npm, pnpm, yarn, bun)
  * @param customPrefix - Optional custom path to use instead of auto-detection
  * @returns Array of global node_modules paths
  */
 export function getGlobalNodeModulesPaths(customPrefix?: string): string[] {
   if (customPrefix) {
     return [customPrefix]
   }
-  return [getNpmGlobalPrefix()]
+
+  const paths: string[] = []
+
+  try {
+    paths.push(getNpmGlobalPrefix())
+  } catch {
+    // npm not available
+  }
+
+  const pnpmPath = getPnpmGlobalPrefix()
+  if (pnpmPath) {
+    paths.push(pnpmPath)
+  }
+
+  const yarnPath = getYarnGlobalPrefix()
+  if (yarnPath) {
+    paths.push(yarnPath)
+  }
+
+  const bunPath = getBunGlobalPrefix()
+  if (bunPath) {
+    paths.push(bunPath)
+  }
+
+  return paths
 }
 
 /**