Make result of :sjs command exclude sanity checks

Showing the sanitized result is usually not useful or desired and obscures the result.
Command :ssjs can be used to see the checks, if enabled.

hkmc2/jvm/src/test/scala/hkmc2/JSBackendDiffMaker.scala

@@ -13,12 +13,14 @@ import codegen.Block
 import codegen.js.Scope
 import hkmc2.syntax.Tree.Ident
 import hkmc2.codegen.Path
+import hkmc2.Diagnostic.Source
 
 abstract class JSBackendDiffMaker extends MLsDiffMaker:
 
   val debugLowering = NullaryCommand("dl")
   val js = NullaryCommand("js")
-  val sjs = NullaryCommand("sjs")
+  val showSanitizedJS = NullaryCommand("ssjs")
+  val showJS = NullaryCommand("sjs")
   val showRepl = NullaryCommand("showRepl")
   val silent = NullaryCommand("silent")
   val noSanityCheck = NullaryCommand("noSanityCheck")
@@ -49,7 +51,29 @@ abstract class JSBackendDiffMaker extends MLsDiffMaker:
 
   override def processTerm(blk: semantics.Term.Blk, inImport: Bool)(using Raise): Unit =
     super.processTerm(blk, inImport)
-    if js.isSet then
+    val outerRaise: Raise = summon
+    var showingJSYieldedCompileError = false
+    if showJS.isSet then
+      given Raise =
+        case d @ ErrorReport(source = Source.Compilation) =>
+          showingJSYieldedCompileError = true
+          outerRaise(d)
+        case d => outerRaise(d)
+      val low = ltl.givenIn:
+        new codegen.Lowering
+          with codegen.LoweringSelSanityChecks(instrument = false)
+          with codegen.LoweringTraceLog(instrument = false)
+      given Elaborator.Ctx = curCtx
+      val jsb = new JSBuilder
+        with JSBuilderArgNumSanityChecks(instrument = false)
+      val le = low.program(blk)
+      val nestedScp = baseScp.nest
+      val je = nestedScp.givenIn:
+        jsb.program(le, N, wd)
+      val jsStr = je.stripBreaks.mkString(100)
+      output(s"JS (unsanitized):")
+      output(jsStr)
+    if js.isSet && !showingJSYieldedCompileError then
       val low = ltl.givenIn:
         new codegen.Lowering
           with codegen.LoweringSelSanityChecks(noSanityCheck.isUnset)
@@ -71,7 +95,7 @@ abstract class JSBackendDiffMaker extends MLsDiffMaker:
       val je = nestedScp.givenIn:
         jsb.program(le, N, wd)
       val jsStr = je.stripBreaks.mkString(100)
-      if sjs.isSet then
+      if showSanitizedJS.isSet then
         output(s"JS:")
         output(jsStr)
       def mkQuery(prefix: Str, jsStr: Str) =

hkmc2/shared/src/main/scala/hkmc2/semantics/Elaborator.scala

@@ -144,7 +144,8 @@ extends Importer:
         cls.definedSymbols.get(nme.name) match
         case s @ S(clsSym) => s
         case N =>
-          raise(ErrorReport(msg"Module '${cls.symbol.nme}' does not contain member '${nme.name}'" -> srcTree.toLoc :: Nil))
+          raise(ErrorReport(msg"${cls.k.desc.capitalize} '${cls.symbol.nme
+            }' does not contain member '${nme.name}'" -> srcTree.toLoc :: Nil))
           N
       case N =>
         N

hkmc2/shared/src/test/mlscript/basics/Classes.mls

@@ -33,7 +33,7 @@ class Foo(x: Int) { log("Hello!") }
 //│ ╔══[ERROR] Expected a valid definition head, found block instead
 //│ ║  l.32: 	class Foo(x: Int) { log("Hello!") }
 //│ ╙──      	                    ^^^^^^^^^^^^^
-//│ JS:
+//│ JS (unsanitized):
 //│ this.<error> = class <error> { constructor() {  } toString() { return "<error>"; } }; null
 //│ > try { this.<error> = class <error> { constructor() {  } toString() { return "<error>"; } }; null } catch (e) { console.log('\u200B' + e + '\u200B'); }
 //│ >            ^

hkmc2/shared/src/test/mlscript/basics/MultiParamLists.mls

@@ -5,50 +5,28 @@
 
 
 fun f(n1: Int): Int = n1
-//│ JS:
-//│ function f(...args) {
-//│   globalThis.Predef.checkArgs("f", 1, true, args.length);
-//│   let n1 = args[0];
-//│   return n1;
-//│ }
-//│ null
+//│ JS (unsanitized):
+//│ function f(n1) { return n1; } null
 
 f(42)
-//│ JS:
+//│ JS (unsanitized):
 //│ this.f(42)
 //│ = 42
 
 fun f(n1: Int)(n2: Int): Int =  (10 * n1 + n2)
-//│ JS:
-//│ function f(...args) {
-//│   globalThis.Predef.checkArgs("f", 1, true, args.length);
-//│   let n1 = args[0];
-//│   return (...args1) => {
-//│     globalThis.Predef.checkArgs("", 1, true, args1.length);
-//│     let n2 = args1[0];
-//│     let tmp;
-//│     tmp = 10 * n1;
-//│     return tmp + n2;
-//│   };
-//│ }
-//│ null
+//│ JS (unsanitized):
+//│ function f(n1) { return (n2) => { let tmp; tmp = 10 * n1; return tmp + n2; }; } null
 
 f(4)(2)
-//│ JS:
+//│ JS (unsanitized):
 //│ let tmp; tmp = this.f(4); tmp(2) ?? null
 //│ = 42
 
 fun f(n1: Int)(n2: Int)(n3: Int): Int = 10 * (10 * n1 + n2) + n3
-//│ JS:
-//│ function f(...args) {
-//│   globalThis.Predef.checkArgs("f", 1, true, args.length);
-//│   let n1 = args[0];
-//│   return (...args1) => {
-//│     globalThis.Predef.checkArgs("", 1, true, args1.length);
-//│     let n2 = args1[0];
-//│     return (...args2) => {
-//│       globalThis.Predef.checkArgs("", 1, true, args2.length);
-//│       let n3 = args2[0];
+//│ JS (unsanitized):
+//│ function f(n1) {
+//│   return (n2) => {
+//│     return (n3) => {
 //│       let tmp, tmp1, tmp2;
 //│       tmp = 10 * n1;
 //│       tmp1 = tmp + n2;
@@ -60,24 +38,16 @@ fun f(n1: Int)(n2: Int)(n3: Int): Int = 10 * (10 * n1 + n2) + n3
 //│ null
 
 f(4)(2)(0)
-//│ JS:
+//│ JS (unsanitized):
 //│ let tmp, tmp1; tmp = this.f(4); tmp1 = tmp(2) ?? null; tmp1(0) ?? null
 //│ = 420
 
 fun f(n1: Int)(n2: Int)(n3: Int)(n4: Int): Int = 10 * (10 * (10 * n1 + n2) + n3) + n4
-//│ JS:
-//│ function f(...args) {
-//│   globalThis.Predef.checkArgs("f", 1, true, args.length);
-//│   let n1 = args[0];
-//│   return (...args1) => {
-//│     globalThis.Predef.checkArgs("", 1, true, args1.length);
-//│     let n2 = args1[0];
-//│     return (...args2) => {
-//│       globalThis.Predef.checkArgs("", 1, true, args2.length);
-//│       let n3 = args2[0];
-//│       return (...args3) => {
-//│         globalThis.Predef.checkArgs("", 1, true, args3.length);
-//│         let n4 = args3[0];
+//│ JS (unsanitized):
+//│ function f(n1) {
+//│   return (n2) => {
+//│     return (n3) => {
+//│       return (n4) => {
 //│         let tmp, tmp1, tmp2, tmp3, tmp4;
 //│         tmp = 10 * n1;
 //│         tmp1 = tmp + n2;
@@ -92,7 +62,7 @@ fun f(n1: Int)(n2: Int)(n3: Int)(n4: Int): Int = 10 * (10 * (10 * n1 + n2) + n3)
 //│ null
 
 f(3)(0)(3)(1)
-//│ JS:
+//│ JS (unsanitized):
 //│ let tmp, tmp1, tmp2; tmp = this.f(3); tmp1 = tmp(0) ?? null; tmp2 = tmp1(3) ?? null; tmp2(1) ?? null
 //│ = 3031
 

hkmc2/shared/src/test/mlscript/codegen/BadInit.mls

@@ -8,20 +8,13 @@ module Bar with
   val x = 1
   module Baz with
     val a = Bar.x
-//│ JS:
+//│ JS (unsanitized):
 //│ const Bar$class = class Bar {
 //│   constructor() {
 //│     this.x = 1;
 //│     const Baz$class = class Baz {
 //│       constructor() {
-//│         let selRes, tmp;
-//│         selRes = globalThis.Bar.x;
-//│         if (selRes === undefined) {
-//│           throw new globalThis.Error("Access to required field 'x' yielded 'undefined'");
-//│         } else {
-//│           tmp = selRes;
-//│         }
-//│         this.a = tmp;
+//│         this.a = globalThis.Bar.x;
 //│       }
 //│       toString() { return "Baz"; }
 //│     };

hkmc2/shared/src/test/mlscript/codegen/BadNew.mls

@@ -15,9 +15,8 @@ new 2
 :ge
 new 2 + 2
 //│ ═══[COMPILATION ERROR] Illegal reference to builtin symbol '+'
-//│ JS:
+//│ JS (unsanitized):
 //│ new (()=>{throw globalThis.Error("Illegal reference to builtin symbol '+'")})()(2, 2)
-//│ ═══[RUNTIME ERROR] TypeError: (intermediate value) is not a constructor
 
 :re
 new()
@@ -40,7 +39,7 @@ new { x = 1 }
 //│     lhs = Ident of "x"
 //│     rhs = IntLit of 1
 //│ ╔══[ERROR] Name not found: x
-//│ ║  l.36: 	new { x = 1 }
+//│ ║  l.35: 	new { x = 1 }
 //│ ╙──      	      ^
 
 

hkmc2/shared/src/test/mlscript/codegen/BadOpen.mls

@@ -23,7 +23,7 @@ open Foo { y }
 
 :sjs
 y
-//│ JS:
+//│ JS (unsanitized):
 //│ this.Foo.y
 
 

hkmc2/shared/src/test/mlscript/codegen/BasicTerms.mls

@@ -5,7 +5,7 @@
 
 
 1
-//│ JS:
+//│ JS (unsanitized):
 //│ 1
 //│ = 1
 
@@ -16,27 +16,32 @@
 //│ ╔══[WARNING] Pure expression in statement position
 //│ ║  l.14: 	1
 //│ ╙──      	^
+//│ JS (unsanitized):
+//│ 2
+//│ ╔══[WARNING] Pure expression in statement position
+//│ ║  l.14: 	1
+//│ ╙──      	^
 //│ Lowered:
 //│ Program:
 //│   imports = Nil
 //│   main = Return:
 //│     res = Lit of IntLit of 2
 //│     implct = true
-//│ JS:
-//│ 2
 //│ = 2
 
 
 :fixme // should be a "linking" error
 log("Hi")
-//│ JS:
+//│ JS (unsanitized):
 //│ this.log("Hi") ?? null
 //│ ═══[RUNTIME ERROR] TypeError: this.log is not a function
 
 :fixme
 :lot
 log("Hi")
 2
+//│ JS (unsanitized):
+//│ let tmp; tmp = this.log("Hi") ?? null; 2
 //│ Lowered:
 //│ Program:
 //│   imports = Nil
@@ -53,14 +58,12 @@ log("Hi")
 //│     rest = Return: \
 //│     res = Lit of IntLit of 2
 //│     implct = true
-//│ JS:
-//│ let tmp; tmp = this.log("Hi") ?? null; 2
 //│ ═══[RUNTIME ERROR] TypeError: this.log is not a function
 
 
 :re
 2(2)
-//│ JS:
+//│ JS (unsanitized):
 //│ 2(2) ?? null
 //│ ═══[RUNTIME ERROR] TypeError: 2 is not a function
 

hkmc2/shared/src/test/mlscript/codegen/BuiltinOps.mls

@@ -3,19 +3,19 @@
 
 :sjs
 2 + 2
-//│ JS:
+//│ JS (unsanitized):
 //│ 2 + 2
 //│ = 4
 
 :sjs
 2 +. 2
-//│ JS:
+//│ JS (unsanitized):
 //│ 2 + 2
 //│ = 4
 
 :sjs
 +2
-//│ JS:
+//│ JS (unsanitized):
 //│ + 2
 //│ = 2
 
@@ -24,7 +24,7 @@ fun (+) lol(a, b) = [a, b]
 
 :sjs
 1 + 2
-//│ JS:
+//│ JS (unsanitized):
 //│ this.lol(1, 2)
 //│ = [ 1, 2 ]
 

hkmc2/shared/src/test/mlscript/codegen/CaseOfCase.mls

@@ -17,10 +17,8 @@ fun test(x) =
   ) is
     Some(v) then log(v)
     None then log("none")
-//│ JS:
-//│ function test(...args) {
-//│   globalThis.Predef.checkArgs("test", 1, true, args.length);
-//│   let x = args[0];
+//│ JS (unsanitized):
+//│ function test(x) {
 //│   let param0, v, scrut, param01, v1, tmp, tmp1;
 //│   if (x instanceof globalThis.Some.class) {
 //│     param0 = x.value;