From a8981464dc599364734258c077fac600f6ef7a86 Mon Sep 17 00:00:00 2001
From: pshao25 <97225342+pshao25@users.noreply.github.com>
Date: Mon, 13 Mar 2023 13:38:18 +0800
Subject: [PATCH 1/8] Install same emitter only once when generating SDK

---
 eng/common/scripts/Cadl-Project-Generate.ps1 | 84 +++++++++++++++++---
 1 file changed, 73 insertions(+), 11 deletions(-)

diff --git a/eng/common/scripts/Cadl-Project-Generate.ps1 b/eng/common/scripts/Cadl-Project-Generate.ps1
index 3e7ee781b05..d069d2737b6 100644
--- a/eng/common/scripts/Cadl-Project-Generate.ps1
+++ b/eng/common/scripts/Cadl-Project-Generate.ps1
@@ -14,6 +14,78 @@ $ErrorActionPreference = "Stop"
 . $PSScriptRoot/common.ps1
 Install-ModuleIfNotInstalled "powershell-yaml" "0.4.1" | Import-Module
 
+function GetNpmPackageVersion([string]$packagePath) {
+    $packagePath = Resolve-Path $packagePath
+    $packageFolder = Split-Path -Parent $packagePath
+    $packageName = Split-Path -Leaf $packagePath
+    Push-Location $packageFolder
+    try {
+        $packageVersion = node -p -e "require('./$packageName').version"
+        return $packageVersion
+    }
+    finally {
+        Pop-Location
+    }
+}
+
+function GetEmitterDependencyVersion([string]$packagePath) {
+    $emitterName = &$GetEmitterNameFn
+    $matchString = "`"$emitterName`": `"(.*?)`""
+    If ((Get-Content -Raw $packagePath) -match $matchString) {
+        return $Matches[1]
+    }
+}
+
+function NpmInstallAtRoot() {
+    $root = git rev-parse --show-toplevel
+    Push-Location $root
+    try {
+        #default to root/eng/emitter-package.json but you can override by writing
+        #Get-${Language}-EmitterPackageJsonPath in your Language-Settings.ps1
+        $replacementPackageJson = "$PSScriptRoot/../../emitter-package.json"
+        if (Test-Path "Function:$GetEmitterPackageJsonPathFn") {
+            $replacementPackageJson = &$GetEmitterPackageJsonPathFn
+        }
+
+        $emitterName = &$GetEmitterNameFn
+        $installedPath = Join-Path $root "node_modules" $emitterName "package.json"
+        if (Test-Path $installedPath) {
+            $installedVersion = GetNpmPackageVersion $installedPath
+            Write-Host "Installed emitter version: $installedVersion"
+
+            $replacementVersion = GetEmitterDependencyVersion $replacementPackageJson
+            Write-Host "Replacement emitter version: $replacementVersion"
+
+            if ($installedVersion -eq $replacementVersion) {
+                Write-Host "Emitter already installed. Skip installing."
+                return
+            }
+        }
+
+        Write-Host "Installing package at $root"
+
+        if (Test-Path "node_modules") {
+            Remove-Item -Path "node_modules" -Force -Recurse
+        }
+
+        Write-Host("Copying package.json from $replacementPackageJson")
+        Copy-Item -Path $replacementPackageJson -Destination "package.json" -Force
+        npm install --no-lock-file
+
+        if (Test-Path "package.json") {
+            Remove-Item -Path "package.json" -Force
+        }
+        if (Test-Path "package-lock.json") {
+            Remove-Item -Path "package-lock.json" -Force
+        }
+
+        if ($LASTEXITCODE) { exit $LASTEXITCODE }
+    }
+    finally {
+        Pop-Location
+    }
+}
+
 function NpmInstallForProject([string]$workingDirectory) {
     Push-Location $workingDirectory
     try {
@@ -36,17 +108,7 @@ function NpmInstallForProject([string]$workingDirectory) {
             Remove-Item -Path "package-lock.json" -Force
         }
 
-        #default to root/eng/emitter-package.json but you can override by writing
-        #Get-${Language}-EmitterPackageJsonPath in your Language-Settings.ps1
-        $replacementPackageJson = "$PSScriptRoot/../../emitter-package.json"
-        if (Test-Path "Function:$GetEmitterPackageJsonPathFn") {
-            $replacementPackageJson = &$GetEmitterPackageJsonPathFn
-        }
-
-        Write-Host("Copying package.json from $replacementPackageJson")
-        Copy-Item -Path $replacementPackageJson -Destination "package.json" -Force
-        npm install --no-lock-file
-        if ($LASTEXITCODE) { exit $LASTEXITCODE }
+        NpmInstallAtRoot
     }
     finally {
         Pop-Location

From 38b8f4d33ab71eace4cca644b460724583b13a2e Mon Sep 17 00:00:00 2001
From: pshao25 <97225342+pshao25@users.noreply.github.com>
Date: Mon, 20 Mar 2023 16:22:49 +0800
Subject: [PATCH 2/8] Update

---
 .../scripts/TypeSpec-Project-Generate.ps1     | 84 ++++++++++++++++---
 1 file changed, 73 insertions(+), 11 deletions(-)

diff --git a/eng/common/scripts/TypeSpec-Project-Generate.ps1 b/eng/common/scripts/TypeSpec-Project-Generate.ps1
index feba00d37ed..e5dc439e8cb 100644
--- a/eng/common/scripts/TypeSpec-Project-Generate.ps1
+++ b/eng/common/scripts/TypeSpec-Project-Generate.ps1
@@ -14,6 +14,78 @@ $ErrorActionPreference = "Stop"
 . $PSScriptRoot/common.ps1
 Install-ModuleIfNotInstalled "powershell-yaml" "0.4.1" | Import-Module
 
+function GetNpmPackageVersion([string]$packagePath) {
+    $packagePath = Resolve-Path $packagePath
+    $packageFolder = Split-Path -Parent $packagePath
+    $packageName = Split-Path -Leaf $packagePath
+    Push-Location $packageFolder
+    try {
+        $packageVersion = node -p -e "require('./$packageName').version"
+        return $packageVersion
+    }
+    finally {
+        Pop-Location
+    }
+}
+
+function GetEmitterDependencyVersion([string]$packagePath) {
+    $emitterName = &$GetEmitterNameFn
+    $matchString = "`"$emitterName`": `"(.*?)`""
+    If ((Get-Content -Raw $packagePath) -match $matchString) {
+        return $Matches[1]
+    }
+}
+
+function NpmInstallAtRoot() {
+    $root = git rev-parse --show-toplevel
+    Push-Location $root
+    try {
+        #default to root/eng/emitter-package.json but you can override by writing
+        #Get-${Language}-EmitterPackageJsonPath in your Language-Settings.ps1
+        $replacementPackageJson = "$PSScriptRoot/../../emitter-package.json"
+        if (Test-Path "Function:$GetEmitterPackageJsonPathFn") {
+            $replacementPackageJson = &$GetEmitterPackageJsonPathFn
+        }
+
+        $emitterName = &$GetEmitterNameFn
+        $installedPath = Join-Path $root "node_modules" $emitterName "package.json"
+        if (Test-Path $installedPath) {
+            $installedVersion = GetNpmPackageVersion $installedPath
+            Write-Host "Installed emitter version: $installedVersion"
+
+            $replacementVersion = GetEmitterDependencyVersion $replacementPackageJson
+            Write-Host "Replacement emitter version: $replacementVersion"
+
+            if ($installedVersion -eq $replacementVersion) {
+                Write-Host "Emitter already installed. Skip installing."
+                return
+            }
+        }
+
+        Write-Host "Installing package at $root"
+
+        if (Test-Path "node_modules") {
+            Remove-Item -Path "node_modules" -Force -Recurse
+        }
+
+        Write-Host("Copying package.json from $replacementPackageJson")
+        Copy-Item -Path $replacementPackageJson -Destination "package.json" -Force
+        npm install --no-lock-file
+
+        if (Test-Path "package.json") {
+            Remove-Item -Path "package.json" -Force
+        }
+        if (Test-Path "package-lock.json") {
+            Remove-Item -Path "package-lock.json" -Force
+        }
+
+        if ($LASTEXITCODE) { exit $LASTEXITCODE }
+    }
+    finally {
+        Pop-Location
+    }
+}
+
 function NpmInstallForProject([string]$workingDirectory) {
     Push-Location $workingDirectory
     try {
@@ -36,17 +108,7 @@ function NpmInstallForProject([string]$workingDirectory) {
             Remove-Item -Path "package-lock.json" -Force
         }
 
-        #default to root/eng/emitter-package.json but you can override by writing
-        #Get-${Language}-EmitterPackageJsonPath in your Language-Settings.ps1
-        $replacementPackageJson = "$PSScriptRoot/../../emitter-package.json"
-        if (Test-Path "Function:$GetEmitterPackageJsonPathFn") {
-            $replacementPackageJson = &$GetEmitterPackageJsonPathFn
-        }
-
-        Write-Host("Copying package.json from $replacementPackageJson")
-        Copy-Item -Path $replacementPackageJson -Destination "package.json" -Force
-        npm install --no-lock-file
-        if ($LASTEXITCODE) { exit $LASTEXITCODE }
+        NpmInstallAtRoot
     }
     finally {
         Pop-Location

From 054bd5346e288d2016d073ccb1fabebc82463b74 Mon Sep 17 00:00:00 2001
From: pshao25 <97225342+pshao25@users.noreply.github.com>
Date: Wed, 22 Mar 2023 14:20:45 +0800
Subject: [PATCH 3/8] Add lock

---
 eng/common/scripts/Cadl-Project-Generate.ps1  | 84 +++----------------
 eng/common/scripts/Helpers/Lock-Helpers.ps1   | 19 +++++
 .../scripts/TypeSpec-Project-Generate.ps1     |  3 +
 eng/common/scripts/common.ps1                 |  1 +
 4 files changed, 34 insertions(+), 73 deletions(-)
 create mode 100644 eng/common/scripts/Helpers/Lock-Helpers.ps1

diff --git a/eng/common/scripts/Cadl-Project-Generate.ps1 b/eng/common/scripts/Cadl-Project-Generate.ps1
index d069d2737b6..3e7ee781b05 100644
--- a/eng/common/scripts/Cadl-Project-Generate.ps1
+++ b/eng/common/scripts/Cadl-Project-Generate.ps1
@@ -14,78 +14,6 @@ $ErrorActionPreference = "Stop"
 . $PSScriptRoot/common.ps1
 Install-ModuleIfNotInstalled "powershell-yaml" "0.4.1" | Import-Module
 
-function GetNpmPackageVersion([string]$packagePath) {
-    $packagePath = Resolve-Path $packagePath
-    $packageFolder = Split-Path -Parent $packagePath
-    $packageName = Split-Path -Leaf $packagePath
-    Push-Location $packageFolder
-    try {
-        $packageVersion = node -p -e "require('./$packageName').version"
-        return $packageVersion
-    }
-    finally {
-        Pop-Location
-    }
-}
-
-function GetEmitterDependencyVersion([string]$packagePath) {
-    $emitterName = &$GetEmitterNameFn
-    $matchString = "`"$emitterName`": `"(.*?)`""
-    If ((Get-Content -Raw $packagePath) -match $matchString) {
-        return $Matches[1]
-    }
-}
-
-function NpmInstallAtRoot() {
-    $root = git rev-parse --show-toplevel
-    Push-Location $root
-    try {
-        #default to root/eng/emitter-package.json but you can override by writing
-        #Get-${Language}-EmitterPackageJsonPath in your Language-Settings.ps1
-        $replacementPackageJson = "$PSScriptRoot/../../emitter-package.json"
-        if (Test-Path "Function:$GetEmitterPackageJsonPathFn") {
-            $replacementPackageJson = &$GetEmitterPackageJsonPathFn
-        }
-
-        $emitterName = &$GetEmitterNameFn
-        $installedPath = Join-Path $root "node_modules" $emitterName "package.json"
-        if (Test-Path $installedPath) {
-            $installedVersion = GetNpmPackageVersion $installedPath
-            Write-Host "Installed emitter version: $installedVersion"
-
-            $replacementVersion = GetEmitterDependencyVersion $replacementPackageJson
-            Write-Host "Replacement emitter version: $replacementVersion"
-
-            if ($installedVersion -eq $replacementVersion) {
-                Write-Host "Emitter already installed. Skip installing."
-                return
-            }
-        }
-
-        Write-Host "Installing package at $root"
-
-        if (Test-Path "node_modules") {
-            Remove-Item -Path "node_modules" -Force -Recurse
-        }
-
-        Write-Host("Copying package.json from $replacementPackageJson")
-        Copy-Item -Path $replacementPackageJson -Destination "package.json" -Force
-        npm install --no-lock-file
-
-        if (Test-Path "package.json") {
-            Remove-Item -Path "package.json" -Force
-        }
-        if (Test-Path "package-lock.json") {
-            Remove-Item -Path "package-lock.json" -Force
-        }
-
-        if ($LASTEXITCODE) { exit $LASTEXITCODE }
-    }
-    finally {
-        Pop-Location
-    }
-}
-
 function NpmInstallForProject([string]$workingDirectory) {
     Push-Location $workingDirectory
     try {
@@ -108,7 +36,17 @@ function NpmInstallForProject([string]$workingDirectory) {
             Remove-Item -Path "package-lock.json" -Force
         }
 
-        NpmInstallAtRoot
+        #default to root/eng/emitter-package.json but you can override by writing
+        #Get-${Language}-EmitterPackageJsonPath in your Language-Settings.ps1
+        $replacementPackageJson = "$PSScriptRoot/../../emitter-package.json"
+        if (Test-Path "Function:$GetEmitterPackageJsonPathFn") {
+            $replacementPackageJson = &$GetEmitterPackageJsonPathFn
+        }
+
+        Write-Host("Copying package.json from $replacementPackageJson")
+        Copy-Item -Path $replacementPackageJson -Destination "package.json" -Force
+        npm install --no-lock-file
+        if ($LASTEXITCODE) { exit $LASTEXITCODE }
     }
     finally {
         Pop-Location
diff --git a/eng/common/scripts/Helpers/Lock-Helpers.ps1 b/eng/common/scripts/Helpers/Lock-Helpers.ps1
new file mode 100644
index 00000000000..3a30dea188a
--- /dev/null
+++ b/eng/common/scripts/Helpers/Lock-Helpers.ps1
@@ -0,0 +1,19 @@
+function FileLockEnter([string]$FilePath) {
+    $FilePath = Resolve-Path $FilePath
+    while (Test-Path -Path $FilePath) {
+        Start-Sleep -Seconds 5
+    }
+
+    try {
+        New-item -Path $FilePath
+    }
+    catch {
+        # This means another process already create this lock file, so try to acquire the lock again.
+        FileLockEnter($FilePath)
+    }
+}
+
+function FileLockExit([string]$FilePath) {
+    $FilePath = Resolve-Path $FilePath
+    Remove-Item $FilePath -Force 
+}
\ No newline at end of file
diff --git a/eng/common/scripts/TypeSpec-Project-Generate.ps1 b/eng/common/scripts/TypeSpec-Project-Generate.ps1
index e5dc439e8cb..149ed25bb2d 100644
--- a/eng/common/scripts/TypeSpec-Project-Generate.ps1
+++ b/eng/common/scripts/TypeSpec-Project-Generate.ps1
@@ -108,7 +108,10 @@ function NpmInstallForProject([string]$workingDirectory) {
             Remove-Item -Path "package-lock.json" -Force
         }
 
+        $lockFile = Join-Path (git rev-parse --show-toplevel) "temp.lock"
+        FileLockEnter($lockFile)
         NpmInstallAtRoot
+        FileLockExit($lockFile)
     }
     finally {
         Pop-Location
diff --git a/eng/common/scripts/common.ps1 b/eng/common/scripts/common.ps1
index 8f9c707ee29..d796754d9af 100644
--- a/eng/common/scripts/common.ps1
+++ b/eng/common/scripts/common.ps1
@@ -16,6 +16,7 @@ $EngScriptsDir = Join-Path $EngDir "scripts"
 . (Join-Path $EngCommonScriptsDir artifact-metadata-parsing.ps1)
 . (Join-Path $EngCommonScriptsDir "Helpers" git-helpers.ps1)
 . (Join-Path $EngCommonScriptsDir "Helpers" Package-Helpers.ps1)
+. (Join-Path $EngCommonScriptsDir "Helpers" Lock-Helpers.ps1)
 
 # Setting expected from common languages settings
 $Language = "Unknown"

From 4ee0edc7188afe896d31bad4902144ce8d5cb892 Mon Sep 17 00:00:00 2001
From: pshao25 <97225342+pshao25@users.noreply.github.com>
Date: Wed, 22 Mar 2023 17:52:46 +0800
Subject: [PATCH 4/8] UpdatE

---
 eng/common/scripts/Helpers/Lock-Helpers.ps1 | 2 --
 1 file changed, 2 deletions(-)

diff --git a/eng/common/scripts/Helpers/Lock-Helpers.ps1 b/eng/common/scripts/Helpers/Lock-Helpers.ps1
index 3a30dea188a..c9317498774 100644
--- a/eng/common/scripts/Helpers/Lock-Helpers.ps1
+++ b/eng/common/scripts/Helpers/Lock-Helpers.ps1
@@ -1,5 +1,4 @@
 function FileLockEnter([string]$FilePath) {
-    $FilePath = Resolve-Path $FilePath
     while (Test-Path -Path $FilePath) {
         Start-Sleep -Seconds 5
     }
@@ -14,6 +13,5 @@ function FileLockEnter([string]$FilePath) {
 }
 
 function FileLockExit([string]$FilePath) {
-    $FilePath = Resolve-Path $FilePath
     Remove-Item $FilePath -Force 
 }
\ No newline at end of file

From eecb802fd7825eeeec8ac98cdb7aca875087d164 Mon Sep 17 00:00:00 2001
From: pshao25 <97225342+pshao25@users.noreply.github.com>
Date: Fri, 31 Mar 2023 14:09:56 +0800
Subject: [PATCH 5/8] UpdatE

---
 eng/common/scripts/Helpers/Lock-Helpers.ps1     | 17 -----------------
 .../scripts/TypeSpec-Project-Generate.ps1       |  7 +++----
 eng/common/scripts/common.ps1                   |  1 -
 3 files changed, 3 insertions(+), 22 deletions(-)
 delete mode 100644 eng/common/scripts/Helpers/Lock-Helpers.ps1

diff --git a/eng/common/scripts/Helpers/Lock-Helpers.ps1 b/eng/common/scripts/Helpers/Lock-Helpers.ps1
deleted file mode 100644
index c9317498774..00000000000
--- a/eng/common/scripts/Helpers/Lock-Helpers.ps1
+++ /dev/null
@@ -1,17 +0,0 @@
-function FileLockEnter([string]$FilePath) {
-    while (Test-Path -Path $FilePath) {
-        Start-Sleep -Seconds 5
-    }
-
-    try {
-        New-item -Path $FilePath
-    }
-    catch {
-        # This means another process already create this lock file, so try to acquire the lock again.
-        FileLockEnter($FilePath)
-    }
-}
-
-function FileLockExit([string]$FilePath) {
-    Remove-Item $FilePath -Force 
-}
\ No newline at end of file
diff --git a/eng/common/scripts/TypeSpec-Project-Generate.ps1 b/eng/common/scripts/TypeSpec-Project-Generate.ps1
index 149ed25bb2d..06c7d6ec479 100644
--- a/eng/common/scripts/TypeSpec-Project-Generate.ps1
+++ b/eng/common/scripts/TypeSpec-Project-Generate.ps1
@@ -108,10 +108,9 @@ function NpmInstallForProject([string]$workingDirectory) {
             Remove-Item -Path "package-lock.json" -Force
         }
 
-        $lockFile = Join-Path (git rev-parse --show-toplevel) "temp.lock"
-        FileLockEnter($lockFile)
-        NpmInstallAtRoot
-        FileLockExit($lockFile)
+        if (!($env:SKIPINSTALL)) {
+            NpmInstallAtRoot
+        }
     }
     finally {
         Pop-Location
diff --git a/eng/common/scripts/common.ps1 b/eng/common/scripts/common.ps1
index d796754d9af..8f9c707ee29 100644
--- a/eng/common/scripts/common.ps1
+++ b/eng/common/scripts/common.ps1
@@ -16,7 +16,6 @@ $EngScriptsDir = Join-Path $EngDir "scripts"
 . (Join-Path $EngCommonScriptsDir artifact-metadata-parsing.ps1)
 . (Join-Path $EngCommonScriptsDir "Helpers" git-helpers.ps1)
 . (Join-Path $EngCommonScriptsDir "Helpers" Package-Helpers.ps1)
-. (Join-Path $EngCommonScriptsDir "Helpers" Lock-Helpers.ps1)
 
 # Setting expected from common languages settings
 $Language = "Unknown"

From 9c056d1679f592ee7e55234b2792ee1613e21be3 Mon Sep 17 00:00:00 2001
From: pshao25 <97225342+pshao25@users.noreply.github.com>
Date: Thu, 6 Apr 2023 13:55:22 +0800
Subject: [PATCH 6/8] Update

---
 .../scripts/TypeSpec-Project-Generate.ps1     | 19 +++----------------
 1 file changed, 3 insertions(+), 16 deletions(-)

diff --git a/eng/common/scripts/TypeSpec-Project-Generate.ps1 b/eng/common/scripts/TypeSpec-Project-Generate.ps1
index 06c7d6ec479..3638202e4a2 100644
--- a/eng/common/scripts/TypeSpec-Project-Generate.ps1
+++ b/eng/common/scripts/TypeSpec-Project-Generate.ps1
@@ -29,7 +29,6 @@ function GetNpmPackageVersion([string]$packagePath) {
 }
 
 function GetEmitterDependencyVersion([string]$packagePath) {
-    $emitterName = &$GetEmitterNameFn
     $matchString = "`"$emitterName`": `"(.*?)`""
     If ((Get-Content -Raw $packagePath) -match $matchString) {
         return $Matches[1]
@@ -37,7 +36,7 @@ function GetEmitterDependencyVersion([string]$packagePath) {
 }
 
 function NpmInstallAtRoot() {
-    $root = git rev-parse --show-toplevel
+    $root = Resolve-Path "$PSScriptRoot/../../.."
     Push-Location $root
     try {
         #default to root/eng/emitter-package.json but you can override by writing
@@ -47,7 +46,6 @@ function NpmInstallAtRoot() {
             $replacementPackageJson = &$GetEmitterPackageJsonPathFn
         }
 
-        $emitterName = &$GetEmitterNameFn
         $installedPath = Join-Path $root "node_modules" $emitterName "package.json"
         if (Test-Path $installedPath) {
             $installedVersion = GetNpmPackageVersion $installedPath
@@ -68,16 +66,7 @@ function NpmInstallAtRoot() {
             Remove-Item -Path "node_modules" -Force -Recurse
         }
 
-        Write-Host("Copying package.json from $replacementPackageJson")
-        Copy-Item -Path $replacementPackageJson -Destination "package.json" -Force
-        npm install --no-lock-file
-
-        if (Test-Path "package.json") {
-            Remove-Item -Path "package.json" -Force
-        }
-        if (Test-Path "package-lock.json") {
-            Remove-Item -Path "package-lock.json" -Force
-        }
+        npm install "$emitterName@$replacementVersion" --no-lock-file
 
         if ($LASTEXITCODE) { exit $LASTEXITCODE }
     }
@@ -108,9 +97,7 @@ function NpmInstallForProject([string]$workingDirectory) {
             Remove-Item -Path "package-lock.json" -Force
         }
 
-        if (!($env:SKIPINSTALL)) {
-            NpmInstallAtRoot
-        }
+        NpmInstallAtRoot
     }
     finally {
         Pop-Location

From fe7d415f1e7732ddba70d4e64cfc5df4c65ab28f Mon Sep 17 00:00:00 2001
From: pshao25 <97225342+pshao25@users.noreply.github.com>
Date: Fri, 7 Apr 2023 12:47:29 +0800
Subject: [PATCH 7/8] Update

---
 .../scripts/TypeSpec-Project-Generate.ps1     | 23 +++++++++++++++----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/eng/common/scripts/TypeSpec-Project-Generate.ps1 b/eng/common/scripts/TypeSpec-Project-Generate.ps1
index 3638202e4a2..839e0c6182f 100644
--- a/eng/common/scripts/TypeSpec-Project-Generate.ps1
+++ b/eng/common/scripts/TypeSpec-Project-Generate.ps1
@@ -46,27 +46,40 @@ function NpmInstallAtRoot() {
             $replacementPackageJson = &$GetEmitterPackageJsonPathFn
         }
 
+        $replacementVersion = GetEmitterDependencyVersion $replacementPackageJson
+        Write-Host "Replacement emitter version: $replacementVersion"
+
         $installedPath = Join-Path $root "node_modules" $emitterName "package.json"
+        Write-Host "Checking installed emitter at $installedPath"
         if (Test-Path $installedPath) {
             $installedVersion = GetNpmPackageVersion $installedPath
             Write-Host "Installed emitter version: $installedVersion"
 
-            $replacementVersion = GetEmitterDependencyVersion $replacementPackageJson
-            Write-Host "Replacement emitter version: $replacementVersion"
-
             if ($installedVersion -eq $replacementVersion) {
                 Write-Host "Emitter already installed. Skip installing."
                 return
             }
         }
 
-        Write-Host "Installing package at $root"
+        Write-Host "Installing package at"(Get-Location)
 
         if (Test-Path "node_modules") {
+            Write-Host "Remove existing node_modules at"(Get-Location)
             Remove-Item -Path "node_modules" -Force -Recurse
         }
 
-        npm install "$emitterName@$replacementVersion" --no-lock-file
+        $hasPackageFile = Test-Path "package.json"
+
+        $npmInstallCommand = "npm install --prefix $root $emitterName@$replacementVersion --no-package-lock --omit=dev"
+        Write-Host($npmInstallCommand)
+        Invoke-Expression $npmInstallCommand
+
+        if ($hasPackageFile) {
+            git restore package.json
+        }
+        else {
+            rm package.json
+        }
 
         if ($LASTEXITCODE) { exit $LASTEXITCODE }
     }

From e6ccda12c3d5a80b4361a0be0bc42fbfc154ac68 Mon Sep 17 00:00:00 2001
From: pshao25 <97225342+pshao25@users.noreply.github.com>
Date: Mon, 10 Apr 2023 11:09:02 +0800
Subject: [PATCH 8/8] UpdatE

---
 eng/common/scripts/TypeSpec-Project-Generate.ps1 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/eng/common/scripts/TypeSpec-Project-Generate.ps1 b/eng/common/scripts/TypeSpec-Project-Generate.ps1
index 839e0c6182f..2ad896fd812 100644
--- a/eng/common/scripts/TypeSpec-Project-Generate.ps1
+++ b/eng/common/scripts/TypeSpec-Project-Generate.ps1
@@ -73,6 +73,7 @@ function NpmInstallAtRoot() {
         $npmInstallCommand = "npm install --prefix $root $emitterName@$replacementVersion --no-package-lock --omit=dev"
         Write-Host($npmInstallCommand)
         Invoke-Expression $npmInstallCommand
+        if ($LASTEXITCODE) { exit $LASTEXITCODE }
 
         if ($hasPackageFile) {
             git restore package.json