fix: allow detection of hardhat when using bun (#4224)

* fix: allow detection of hardhat when using bun

- added the user agent check now that bun supports it when finding the package manager
- since bun does not have an ls command similar to the others, we check all installed packaged (--all is needed in monorepos) and check it it contains hardhat

* chore: tweaks

---------

Co-authored-by: Tom Meagher <tom@meagher.co>

.changeset/nasty-bees-hide.md

@@ -0,0 +1,5 @@
+---
+"@wagmi/cli": patch
+---
+
+Fixed package detection for Bun.

packages/cli/src/utils/packages.ts

@@ -9,11 +9,23 @@ export async function getIsPackageInstalled(parameters: {
   const { packageName, cwd = process.cwd() } = parameters
   try {
     const packageManager = await getPackageManager()
-    const command =
-      packageManager === 'yarn' ? ['why', packageName] : ['ls', packageName]
+    const command = (() => {
+      switch (packageManager) {
+        case 'yarn':
+          return ['why', packageName]
+        case 'bun':
+          return ['pm', 'ls', '--all']
+        default:
+          return ['ls', packageName]
+      }
+    })()
+
     const { stdout } = await execa(packageManager, command, { cwd })
-    if (stdout !== '') return true
-    return false
+
+    // For Bun, we need to check if the package name is in the output
+    if (packageManager === 'bun') return stdout.includes(packageName)
+
+    return stdout !== ''
   } catch (_error) {
     return false
   }
@@ -26,6 +38,7 @@ export async function getPackageManager(executable?: boolean | undefined) {
     // The yarn@^3 user agent includes npm, so yarn must be checked first.
     if (userAgent.includes('yarn')) return 'yarn'
     if (userAgent.includes('npm')) return executable ? 'npx' : 'npm'
+    if (userAgent.includes('bun')) return executable ? 'bunx' : 'bun'
   }
 
   const packageManager = await detect()