Fix const (basic)

inputs/failing/assignmentEvalOrder.ts

@@ -7,7 +7,7 @@
 // For reference, assignmentEvalOrder2.ts tests the actual order of evaluation.
 
 export default function main() {
-  const x = {} as any;
+  let x = {} as any;
   let key = "left";
 
   x[key] = key = "right";

inputs/passing/assignmentEvalOrder2.ts

@@ -2,9 +2,9 @@
 
 export default function main() {
   let log = [];
-  const x = {} as any;
+  let x = {} as any;
 
-  x[log.push('a')] = log.push('b');
+  x[log.push("a")] = log.push("b");
 
   return log;
 }

inputs/passing/const.ts

@@ -1,5 +1,5 @@
 export default function main() {
   const foo = 0;
-  foo++; // Should throw
+  foo++; // Compile-time error (unlike JS at runtime)
   return foo;
 }

inputs/passing/projEuler/p18.ts

@@ -1,22 +1,22 @@
 // test_output! 1074
 
 export default function main() {
-  const tower = [
+  let tower = [
     [75],
     [95, 64],
     [17, 47, 82],
     [18, 35, 87, 10],
-    [20,  4, 82, 47, 65],
-    [19,  1, 23, 75,  3, 34],
-    [88,  2, 77, 73,  7, 63, 67],
-    [99, 65,  4, 28,  6, 16, 70, 92],
+    [20, 4, 82, 47, 65],
+    [19, 1, 23, 75, 3, 34],
+    [88, 2, 77, 73, 7, 63, 67],
+    [99, 65, 4, 28, 6, 16, 70, 92],
     [41, 41, 26, 56, 83, 40, 80, 70, 33],
     [41, 48, 72, 33, 47, 32, 37, 16, 94, 29],
     [53, 71, 44, 65, 25, 43, 91, 52, 97, 51, 14],
     [70, 11, 33, 28, 77, 73, 17, 78, 39, 68, 17, 57],
     [91, 71, 52, 38, 17, 14, 91, 43, 58, 50, 27, 29, 48],
-    [63, 66,  4, 68, 89, 53, 67, 30, 73, 16, 69, 87, 40, 31],
-    [ 4, 62, 98, 27, 23,  9, 70, 98, 73, 93, 38, 53, 60,  4, 23],
+    [63, 66, 4, 68, 89, 53, 67, 30, 73, 16, 69, 87, 40, 31],
+    [4, 62, 98, 27, 23, 9, 70, 98, 73, 93, 38, 53, 60, 4, 23],
   ];
 
   for (let i = tower.length - 2; i >= 0; i--) {

inputs/passing/swap.ts

@@ -1,7 +1,7 @@
 // test_output! ["b","a"]
 
 export default function main() {
-  const x = ['a', 'b'];
+  let x = ["a", "b"];
 
   [x[0], x[1]] = [x[1], x[0]];
 

valuescript_compiler/src/scope_analysis.rs

@@ -1997,6 +1997,8 @@ impl ScopeAnalysis {
         }
       }
     }
+
+    self.diagnostics.append(&mut diagnostics);
   }
 
   fn process_optional_mutations(&mut self) {