fix: Check for compiler errors before converting

.gitignore

@@ -14,3 +14,4 @@ yarn-error.log
 /dist/
 
 typedoc*.tgz
+tmp

src/lib/converter/converter.ts

@@ -361,22 +361,51 @@ export class Converter extends ChildableComponent<Application, ConverterComponen
      */
     private compile(context: Context): ReadonlyArray<ts.Diagnostic> {
         const program = context.program;
-
         const exclude = createMinimatch(this.application.exclude || []);
         const isExcluded = (file: ts.SourceFile) => exclude.some(mm => mm.match(file.fileName));
-
         const includedSourceFiles = program.getSourceFiles()
             .filter(file => !isExcluded(file));
-        const isRelevantError = ({ file }: ts.Diagnostic) => !file || includedSourceFiles.includes(file);
+
+        const errors = this.getCompilerErrors(program, includedSourceFiles);
+        if (errors.length) {
+            return errors;
+        }
 
         includedSourceFiles.forEach((sourceFile) => {
             this.convertNode(context, sourceFile);
         });
 
+        return [];
+    }
+
+    /**
+     * Resolve the project within the given context.
+     *
+     * @param context  The context object describing the current state the converter is in.
+     * @returns The final project reflection.
+     */
+    private resolve(context: Context): ProjectReflection {
+        this.trigger(Converter.EVENT_RESOLVE_BEGIN, context);
+        const project = context.project;
+
+        for (const id in project.reflections) {
+            if (!project.reflections.hasOwnProperty(id)) {
+                continue;
+            }
+            this.trigger(Converter.EVENT_RESOLVE, context, project.reflections[id]);
+        }
+
+        this.trigger(Converter.EVENT_RESOLVE_END, context);
+        return project;
+    }
+
+    private getCompilerErrors(program: ts.Program, includedSourceFiles: readonly ts.SourceFile[]): ReadonlyArray<ts.Diagnostic> {
         if (this.application.ignoreCompilerErrors) {
             return [];
         }
 
+        const isRelevantError = ({ file }: ts.Diagnostic) => !file || includedSourceFiles.includes(file);
+
         let diagnostics = program.getOptionsDiagnostics().filter(isRelevantError);
         if (diagnostics.length) {
             return diagnostics;
@@ -400,27 +429,6 @@ export class Converter extends ChildableComponent<Application, ConverterComponen
         return [];
     }
 
-    /**
-     * Resolve the project within the given context.
-     *
-     * @param context  The context object describing the current state the converter is in.
-     * @returns The final project reflection.
-     */
-    private resolve(context: Context): ProjectReflection {
-        this.trigger(Converter.EVENT_RESOLVE_BEGIN, context);
-        const project = context.project;
-
-        for (const id in project.reflections) {
-            if (!project.reflections.hasOwnProperty(id)) {
-                continue;
-            }
-            this.trigger(Converter.EVENT_RESOLVE, context, project.reflections[id]);
-        }
-
-        this.trigger(Converter.EVENT_RESOLVE_END, context);
-        return project;
-    }
-
     /**
      * Return the basename of the default library that should be used.
      *