fix(base): clean className reference

src/baseTranspiler.ts

@@ -2,7 +2,7 @@
 import { IFileImport, IFileExport, TranspilationError, IMethodType, IParameterType } from './types.js';
 import { unCamelCase } from "./utils.js";
 import { Logger } from "./logger.js";
 import { timingSafeEqual } from 'crypto';
 class BaseTranspiler {
 
     NUM_LINES_BETWEEN_CLASS_MEMBERS = 1;
@@ -342,7 +342,7 @@
 
         let method = undefined;
 
         let parentClass = (ts as any).getAllSuperTypeNodes(node.parent)[0];
 
         while (parentClass !== undefined) {
             const parentClassType = global.checker.getTypeAtLocation(parentClass);
@@ -359,13 +359,13 @@
                 if (ts.isMethodDeclaration(elem)) {
 
                     const name = elem.name.getText().trim();
                     if ((node as any).name.escapedText === name) {
                         method = elem;
                     }
                 }
             });
 
             parentClass = (ts as any).getAllSuperTypeNodes(parentClassDecl)[0] ?? undefined;
         }
 
 
@@ -378,7 +378,7 @@
         return this.DEFAULT_IDENTATION.repeat(parseInt(num));
     }
 
     getBlockOpen(identation){
         return this.SPACE_BEFORE_BLOCK_OPENING + this.BLOCK_OPENING_TOKEN + "\n";
     }
 
@@ -443,11 +443,11 @@
         return this.getIden(identation) + `${left} instanceof ${right}`;
     }
 
     getCustomOperatorIfAny(left, right, operator) {
         return undefined;
     }
 
     printCustomBinaryExpressionIfAny(node, identation) {
         return undefined; // stub to override
     }
 
@@ -1875,6 +1875,12 @@
             }
 
             if (node.statements) {
+                if (ts.isSourceFile(node)) {
+                    // reset the current class name when entering a new file so a
+                    // class name from a previously transpiled file does not leak
+                    // into a class-less file (e.g. try/catch wrappers in tests)
+                    this.className = "undefined";
+                }
                 const transformedStatements = node.statements.map((m)=> {
                     return this.printNode(m, identation + 1);
                 });