diff --git a/BuildServer/.gitignore b/BuildServer/.gitignore
index 86f6aa2..285b65b 100644
--- a/BuildServer/.gitignore
+++ b/BuildServer/.gitignore
@@ -18,6 +18,5 @@ data
 *.crt
 settings.js
 settings.ts
-*.d.ts
 
 iisnode
diff --git a/BuildServer/global.d.ts b/BuildServer/global.d.ts
new file mode 100644
index 0000000..7c05f6a
--- /dev/null
+++ b/BuildServer/global.d.ts
@@ -0,0 +1,64 @@
+interface Message {
+    readonly message: string;
+    readonly prefix: string;
+}
+
+interface PartialMessagesLeaf {
+    readonly $messages?: string[];
+}
+
+interface PartialMessagesRecursive {
+    readonly [propName: string]: Messages | string[] | Message[]; // workaround for compatibility with PartialMessagesLeaf and PartialMessagesRoot
+}
+
+interface PartialMessagesRoot {
+    readonly $allMessages: Message[];
+}
+
+type Messages = PartialMessagesLeaf & PartialMessagesRecursive;
+
+type MessagesRoot = PartialMessagesLeaf & PartialMessagesRecursive & PartialMessagesRoot;
+
+interface ReportResult {
+    readonly errors: MessagesRoot;
+    readonly warns: MessagesRoot;
+    readonly infos: MessagesRoot;
+    readonly messages: MessagesRoot;
+}
+
+interface Report {
+    readonly date: number;
+    readonly err?: string;
+    readonly result?: ReportResult;
+}
+
+interface TaskProcessorCallback {
+    (err: string): void;
+}
+
+interface TaskProcessorCore {
+    readonly onError: (message: string | Error, prefix?: string) => void;
+    readonly onWarn: (message: string, prefix?: string) => void;
+    readonly onInfo: (message: string, prefix?: string) => void;
+    readonly context?: any;
+}
+
+interface TaskProcessor extends TaskProcessorCore {
+    readonly process: () => void;
+    readonly processTask: (task: TaskInfo, innerCallback: TaskProcessorCallback) => void;
+    readonly done: () => void;
+}
+
+interface TaskInfo {
+    name?: string;
+    type: string;
+    params: any;
+}
+
+interface Task {
+    (params: any, processor: TaskProcessor): () => void;
+}
+
+interface Tasks {
+    readonly [taskName: string]: Task;
+}