Fix map keys if suffix/prefix specified

Author: tkrajina

typescriptify/typescriptify.go

@@ -254,7 +254,14 @@ func (t *typeScriptClassBuilder) AddMapField(fieldName string, field reflect.Str
 	}
 	strippedFieldName := strings.ReplaceAll(fieldName, "?", "")
 
-	t.fields = append(t.fields, fmt.Sprintf("%s%s: {[key: %s]: %s};", t.indent, fieldName, t.prefix+keyType.Name()+t.suffix, valueTypeName))
+	keyTypeStr := keyType.Name()
+	// Key should always be string, no need for this:
+	// _, isSimple := t.types[keyType.Kind()]
+	// if !isSimple {
+	// 	keyTypeStr = t.prefix + keyType.Name() + t.suffix
+	// }
+
+	t.fields = append(t.fields, fmt.Sprintf("%s%s: {[key: %s]: %s};", t.indent, fieldName, keyTypeStr, valueTypeName))
 	if valueType.Kind() == reflect.Struct {
 		t.constructorBody = append(t.constructorBody, fmt.Sprintf("%s%sthis.%s = this.convertValues(source[\"%s\"], %s, true);", t.indent, t.indent, strippedFieldName, strippedFieldName, t.prefix+valueTypeName+t.suffix))
 	} else {