vuejs
diff --git a/‎packages/@vue/cli/lib/util/ProjectPackageManager.js
Copy file name to clipboardExpand all lines: packages/@vue/cli/lib/util/ProjectPackageManager.js
+9-1Lines changed: 9 additions & 1 deletion b/‎packages/@vue/cli/lib/util/ProjectPackageManager.js
Copy file name to clipboardExpand all lines: packages/@vue/cli/lib/util/ProjectPackageManager.js
+9-1Lines changed: 9 additions & 1 deletion
@@ -134,6 +134,10 @@ class PackageManager {
 
         this.needsNpmInstallFix = true
       }
+
+      if (semver.gte(npmVersion, '7.0.0')) {
+        this.needsPeerDepsFix = true
+      }
     }
 
     if (!SUPPORTED_PACKAGE_MANAGERS.includes(this.bin)) {
@@ -374,7 +378,7 @@ class PackageManager {
       return
     }
 
-    return await this.runCommand('install')
+    return await this.runCommand('install', this.needsPeerDepsFix ? ['--legacy-peer-deps'] : [])
   }
 
   async add (packageName, {
@@ -390,6 +394,10 @@ class PackageManager {
       }
     }
 
+    if (this.needsPeerDepsFix) {
+      args.push('--legacy-peer-deps')
+    }
+
     return await this.runCommand('add', [packageName, ...args])
   }
Original file line number	Diff line number	Diff line change
`@@ -134,6 +134,10 @@ class PackageManager {`
`134`	`134`
`135`	`135`	`this.needsNpmInstallFix = true`
`136`	`136`	`}`
	`137`	`+`
	`138`	`+ if (semver.gte(npmVersion, '7.0.0')) {`
	`139`	`+ this.needsPeerDepsFix = true`
	`140`	`+ }`
`137`	`141`	`}`
`138`	`142`
`139`	`143`	`if (!SUPPORTED_PACKAGE_MANAGERS.includes(this.bin)) {`
`@@ -374,7 +378,7 @@ class PackageManager {`
`374`	`378`	`return`
`375`	`379`	`}`
`376`	`380`
`377`		`- return await this.runCommand('install')`
	`381`	`+ return await this.runCommand('install', this.needsPeerDepsFix ? ['--legacy-peer-deps'] : [])`
`378`	`382`	`}`
`379`	`383`
`380`	`384`	`async add (packageName, {`
`@@ -390,6 +394,10 @@ class PackageManager {`
`390`	`394`	`}`
`391`	`395`	`}`
`392`	`396`
	`397`	`+ if (this.needsPeerDepsFix) {`
	`398`	`+ args.push('--legacy-peer-deps')`
	`399`	`+ }`
	`400`	`+`
`393`	`401`	`return await this.runCommand('add', [packageName, ...args])`
`394`	`402`	`}`
`395`	`403`