From 00731e31099d217ec0c15fa82e71adff0fdb4387 Mon Sep 17 00:00:00 2001
From: edraitsev <ddrrai@gmail.com>
Date: Sun, 13 May 2018 11:39:56 +0200
Subject: [PATCH 1/2] Copy node_modules folder when symlink fails

---
 src/index.ts       |  5 +++--
 src/utils/index.ts | 28 ++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 2 deletions(-)
 create mode 100644 src/utils/index.ts

diff --git a/src/index.ts b/src/index.ts
index ef134950..3c9a7ea8 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -8,6 +8,7 @@ import { ServerlessOptions, ServerlessInstance, ServerlessFunction } from './typ
 import * as typescript from './typescript'
 
 import { watchFiles } from './watchFiles'
+import { symlink } from './utils'
 
 // Folders
 const serverlessFolder = '.serverless'
@@ -138,12 +139,12 @@ export class TypeScriptPlugin {
   async copyExtras() {
     // include node_modules into build
     if (!fs.existsSync(path.resolve(path.join(buildFolder, 'node_modules')))) {
-      fs.symlinkSync(path.resolve('node_modules'), path.resolve(path.join(buildFolder, 'node_modules')))
+      symlink(path.resolve('node_modules'), path.resolve(path.join(buildFolder, 'node_modules')))
     }
 
     // include package.json into build so Serverless can exlcude devDeps during packaging
     if (!fs.existsSync(path.resolve(path.join(buildFolder, 'package.json')))) {
-      fs.symlinkSync(path.resolve('package.json'), path.resolve(path.join(buildFolder, 'package.json')))
+      symlink(path.resolve('package.json'), path.resolve(path.join(buildFolder, 'package.json')))
     }
 
     // include any "extras" from the "include" section
diff --git a/src/utils/index.ts b/src/utils/index.ts
new file mode 100644
index 00000000..56bc6c0e
--- /dev/null
+++ b/src/utils/index.ts
@@ -0,0 +1,28 @@
+import * as fs from 'fs-extra'
+
+export interface SymlinkException {
+  code: string
+  errno: number
+}
+
+const isMissingSymlinkPermission = (error: SymlinkException): boolean => {
+  // Generally happens when no admin rights with UAC enabled on Windows.
+  return error.code === 'EPERM' && error.errno === -4048
+}
+
+const copyIfMissingSymlinkPermission =
+  (srcpath: string, dstpath: string, error: SymlinkException) => {
+    if (this.isMissingSymlinkPermission(error)) {
+      fs.copySync(srcpath, dstpath)
+    } else {
+      throw error
+    }
+  }
+
+export const symlink = (srcpath: string, dstpath: string, type?: string) => {
+  try {
+    fs.symlinkSync(srcpath, dstpath, type)
+  } catch (error) {
+    this.copyIfMissingSymlinkPermission(srcpath, dstpath, error)
+  }
+}

From 5b068744976a883931676200791b7e9f1de1ed74 Mon Sep 17 00:00:00 2001
From: EugeneDraitsev <ddrrai@gmail.com>
Date: Sun, 13 May 2018 11:48:22 +0200
Subject: [PATCH 2/2] Fixed some errors

---
 src/utils/index.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/utils/index.ts b/src/utils/index.ts
index 56bc6c0e..59824e16 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -12,7 +12,7 @@ const isMissingSymlinkPermission = (error: SymlinkException): boolean => {
 
 const copyIfMissingSymlinkPermission =
   (srcpath: string, dstpath: string, error: SymlinkException) => {
-    if (this.isMissingSymlinkPermission(error)) {
+    if (isMissingSymlinkPermission(error)) {
       fs.copySync(srcpath, dstpath)
     } else {
       throw error
@@ -23,6 +23,6 @@ export const symlink = (srcpath: string, dstpath: string, type?: string) => {
   try {
     fs.symlinkSync(srcpath, dstpath, type)
   } catch (error) {
-    this.copyIfMissingSymlinkPermission(srcpath, dstpath, error)
+    copyIfMissingSymlinkPermission(srcpath, dstpath, error)
   }
 }