update to latest npm modules (#24)

* update to latest npm modules

* bugfix, and better error output

* add testcase, using DDIC type

tests/use-ddic-string-table/expected_results.json

@@ -0,0 +1 @@
+{"version":1,"status":"pass"}

tests/use-ddic-string-table/zcl_simple.clas.abap

@@ -0,0 +1,14 @@
+CLASS zcl_simple DEFINITION PUBLIC.
+  PUBLIC SECTION.
+    METHODS run RETURNING VALUE(res) TYPE i.
+ENDCLASS.
+
+CLASS zcl_simple IMPLEMENTATION.
+
+  METHOD run.
+    DATA foo TYPE string_table.
+    APPEND |sdf| TO foo.
+    res = 3.
+  ENDMETHOD.
+
+ENDCLASS.

tests/use-ddic-string-table/zcl_simple.clas.testclasses.abap

@@ -0,0 +1,18 @@
+CLASS ltcl_simple DEFINITION FOR TESTING RISK LEVEL HARMLESS DURATION SHORT FINAL.
+
+  PRIVATE SECTION.
+    METHODS test FOR TESTING RAISING cx_static_check.
+
+ENDCLASS.
+
+CLASS ltcl_simple IMPLEMENTATION.
+
+  METHOD test.
+    DATA simple TYPE REF TO zcl_simple.
+    CREATE OBJECT simple.
+    cl_abap_unit_assert=>assert_equals(
+      act = simple->run( )
+      exp = 3 ).
+  ENDMETHOD.
+
+ENDCLASS.