fix: hardhat plugin npm exec (#2145)

.changeset/poor-rice-jam.md

@@ -0,0 +1,5 @@
+---
+'@wagmi/cli': patch
+---
+
+Fixed issue using Hardhat Plugin with npm.

packages/cli/src/plugins/hardhat.ts

@@ -132,14 +132,14 @@ export function hardhat<TProject extends string>({
   return {
     async contracts() {
       if (clean) {
-        const packageManager = await getPackageManager()
+        const packageManager = await getPackageManager(true)
         const [command, ...options] = (
           typeof clean === 'boolean' ? `${packageManager} hardhat clean` : clean
         ).split(' ')
         await execa(command!, options, { cwd: project })
       }
       if (build) {
-        const packageManager = await getPackageManager()
+        const packageManager = await getPackageManager(true)
         const [command, ...options] = (
           typeof build === 'boolean'
             ? `${packageManager} hardhat compile`
@@ -187,7 +187,7 @@ export function hardhat<TProject extends string>({
 
             const [command, ...options] = (
               typeof rebuild === 'boolean'
-                ? `${await getPackageManager()} hardhat compile`
+                ? `${await getPackageManager(true)} hardhat compile`
                 : rebuild
             ).split(' ')
 

packages/cli/src/utils/packages.ts

@@ -21,24 +21,28 @@ export async function getIsPackageInstalled({
 }
 
 export async function getInstallCommand(packageName: string) {
-  const packageManager = await getPackageManager()
+  const packageManager = await getPackageManager(false)
   switch (packageManager) {
     case 'yarn':
       return [packageManager, ['add', packageName]] as const
     case 'npm':
       return [packageManager, ['install', '--save', packageName]] as const
     case 'pnpm':
       return [packageManager, ['add', packageName]] as const
+    default:
+      throw new Error(`Unknown package manager: ${packageManager}`)
   }
 }
 
-export async function getPackageManager() {
+export async function getPackageManager(executable?: boolean) {
   const userAgent = process.env.npm_config_user_agent
   if (userAgent) {
     if (userAgent.includes('pnpm')) return 'pnpm'
     // The yarn@^3 user agent includes npm, so yarn must be checked first.
     if (userAgent.includes('yarn')) return 'yarn'
-    if (userAgent.includes('npm')) return 'npm'
+    if (userAgent.includes('npm')) return executable ? 'npx' : 'npm'
   }
-  return detect()
+  const packageManager = await detect()
+  if (packageManager === 'npm' && executable) return 'npx'
+  return packageManager
 }