Program[xs].

&Setup[];
&Main[];
&Teardown[];

&Main[].
---
js'function \name() { \body; }': js'var \name = () => { \body; }';
E[&EvalStatemets[]];

&Setup[].
---
JS_Program["script"; \xs]: Program[\xs];

&Teardown[].
---
Program[\xs]: JS_Program["script"; \xs];

&EvalStatemets[].
---
E[Program[\xs]]: JS_Program["script"; #List_Map[E[JS_Program["script"; Cons[\1; Nil[]]]]; \xs]];