diff --git a/extensions/configuration-editing/tsconfig.json b/extensions/configuration-editing/tsconfig.json
index 3fd4b7cd117..6971f531b11 100644
--- a/extensions/configuration-editing/tsconfig.json
+++ b/extensions/configuration-editing/tsconfig.json
@@ -8,7 +8,7 @@
 		],
 		"strictNullChecks": true
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
diff --git a/extensions/css/client/tsconfig.json b/extensions/css/client/tsconfig.json
index 2f1dccc29ca..e87d1a805a1 100644
--- a/extensions/css/client/tsconfig.json
+++ b/extensions/css/client/tsconfig.json
@@ -7,7 +7,7 @@
 			"es5", "es2015.promise"
 		]
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/css/server/tsconfig.json b/extensions/css/server/tsconfig.json
index 7651bc8687e..8e862f02646 100644
--- a/extensions/css/server/tsconfig.json
+++ b/extensions/css/server/tsconfig.json
@@ -7,7 +7,7 @@
 			"es5"
 		]
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/extension-editing/tsconfig.json b/extensions/extension-editing/tsconfig.json
index 90ac01c2d39..a2b5bcdfddf 100644
--- a/extensions/extension-editing/tsconfig.json
+++ b/extensions/extension-editing/tsconfig.json
@@ -7,7 +7,7 @@
 		"module": "commonjs",
 		"outDir": "./out"
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/git/tsconfig.json b/extensions/git/tsconfig.json
index bed30f8826c..254c9e67459 100644
--- a/extensions/git/tsconfig.json
+++ b/extensions/git/tsconfig.json
@@ -9,7 +9,7 @@
 		"strictNullChecks": true,
 		"experimentalDecorators": true
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/grunt/tsconfig.json b/extensions/grunt/tsconfig.json
index d815a565579..e804fa3acd7 100644
--- a/extensions/grunt/tsconfig.json
+++ b/extensions/grunt/tsconfig.json
@@ -12,8 +12,7 @@
 		"noUnusedLocals": true,
 		"noUnusedParameters": true
 	},
-	"exclude": [
-		"node_modules",
-		"out"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/gulp/tsconfig.json b/extensions/gulp/tsconfig.json
index d815a565579..e804fa3acd7 100644
--- a/extensions/gulp/tsconfig.json
+++ b/extensions/gulp/tsconfig.json
@@ -12,8 +12,7 @@
 		"noUnusedLocals": true,
 		"noUnusedParameters": true
 	},
-	"exclude": [
-		"node_modules",
-		"out"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/javascript/tsconfig.json b/extensions/javascript/tsconfig.json
index 551261ed46d..4445bb27fd7 100644
--- a/extensions/javascript/tsconfig.json
+++ b/extensions/javascript/tsconfig.json
@@ -7,7 +7,7 @@
 			"es2015"
 		]
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/json/server/tsconfig.json b/extensions/json/server/tsconfig.json
index c2a86a0af35..deecf69b8b4 100644
--- a/extensions/json/server/tsconfig.json
+++ b/extensions/json/server/tsconfig.json
@@ -9,7 +9,7 @@
 			"es5", "es2015.promise"
 		]
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/markdown/tsconfig.json b/extensions/markdown/tsconfig.json
index e877d8142f0..ec272338af5 100644
--- a/extensions/markdown/tsconfig.json
+++ b/extensions/markdown/tsconfig.json
@@ -14,7 +14,7 @@
 		"noUnusedLocals": true,
 		"noUnusedParameters": true
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/php/tsconfig.json b/extensions/php/tsconfig.json
index 90ac01c2d39..a2b5bcdfddf 100644
--- a/extensions/php/tsconfig.json
+++ b/extensions/php/tsconfig.json
@@ -7,7 +7,7 @@
 		"module": "commonjs",
 		"outDir": "./out"
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/python/tsconfig.json b/extensions/python/tsconfig.json
index 90ac01c2d39..a2b5bcdfddf 100644
--- a/extensions/python/tsconfig.json
+++ b/extensions/python/tsconfig.json
@@ -7,7 +7,7 @@
 		"module": "commonjs",
 		"outDir": "./out"
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/ruby/tsconfig.json b/extensions/ruby/tsconfig.json
index a016490a376..efe5568f2b5 100644
--- a/extensions/ruby/tsconfig.json
+++ b/extensions/ruby/tsconfig.json
@@ -8,7 +8,7 @@
 		],
 		"sourceMap": true
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/typescript/tsconfig.json b/extensions/typescript/tsconfig.json
index 2e44abefad4..3112725c103 100644
--- a/extensions/typescript/tsconfig.json
+++ b/extensions/typescript/tsconfig.json
@@ -13,10 +13,7 @@
 		"noUnusedLocals": true,
 		"noUnusedParameters": true
 	},
-	"exclude": [
-		"node_modules",
-		"server",
-		"out",
-		"test/colorize-fixtures"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/vscode-api-tests/tsconfig.json b/extensions/vscode-api-tests/tsconfig.json
index 620857bb06f..26c357e374b 100644
--- a/extensions/vscode-api-tests/tsconfig.json
+++ b/extensions/vscode-api-tests/tsconfig.json
@@ -9,7 +9,7 @@
 		"sourceMap": true,
 		"strictNullChecks": true
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file
diff --git a/extensions/vscode-colorize-tests/tsconfig.json b/extensions/vscode-colorize-tests/tsconfig.json
index 099a940aa2e..366e25ea09c 100644
--- a/extensions/vscode-colorize-tests/tsconfig.json
+++ b/extensions/vscode-colorize-tests/tsconfig.json
@@ -8,7 +8,7 @@
 		],
 		"sourceMap": true
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }
\ No newline at end of file