Implement reference counting (#592)

std/assembly/util/error.ts

@@ -0,0 +1,22 @@
+// Common error messages for use accross the standard library. Keeping error messages compact
+// and reusing them where possible ensures minimal static data in binaries.
+
+// @ts-ignore: decorator
+@lazy @inline
+export const E_INDEXOUTOFRANGE: string = "Index out of range";
+
+// @ts-ignore: decorator
+@lazy @inline
+export const E_INVALIDLENGTH: string = "Invalid length";
+
+// @ts-ignore: decorator
+@lazy @inline
+export const E_EMPTYARRAY: string = "Array is empty";
+
+// @ts-ignore: decorator
+@lazy @inline
+export const E_HOLEYARRAY: string = "Element type must be nullable if array is holey";
+
+// @ts-ignore: decorator
+@lazy @inline
+export const E_NOTIMPLEMENTED: string = "Not implemented";