Move files from main kindscript repo

libs/microbit/mbit.ts

@@ -0,0 +1,28 @@
+type Action = () => void;
+
+namespace helpers {
+    export function arraySplice<T>(arr: T[], start: number, len: number) {
+        if (start < 0) {
+            return;
+        }
+        for (let i = 0; i < len; ++i) {
+            arr.removeAt(start)
+        }
+    }
+}
+
+namespace console {
+    export function log(msg: string) {
+        writeString(msg);
+        writeString("\r\n");
+    }
+    
+    //% shim=micro_bit::serialSendString
+    function writeString(text: string): void { }
+}
+
+namespace math {
+    export function clamp(min: number, max:number, value:number): number {
+        return Math.min(max, Math.max(min, value));
+    }
+}