There is a JavaScript error if acceptedTypes property in the file question setup as an array fix #10627 (#10628)

Author: andrewtelnov

packages/survey-core/src/question_file.ts

@@ -601,12 +601,18 @@ export class QuestionFileModel extends QuestionFileModelBase {
         res.push(...categoryTypes);
       }
     });
-    const customTypes = this.acceptedTypes || "";
-    customTypes.split(",").forEach(type => {
-      if (type && res.indexOf(type) < 0) {
-        res.push(type);
-      }
-    });
+    const addTypes = (types: Array<string>) => {
+      types.forEach(type => {
+        if (type && res.indexOf(type) < 0) {
+          res.push(type);
+        }
+      });
+    };
+    if (Array.isArray(this.acceptedTypes)) {
+      addTypes(this.acceptedTypes);
+    } else {
+      addTypes((this.acceptedTypes || "").split(","));
+    }
     return res.length > 0 ? res.join(",") : undefined;
   }
   /**

packages/survey-core/tests/questionFileTests.ts

@@ -2522,4 +2522,21 @@ QUnit.test("questionFile acceptedCategories property, Issue#10602", function (as
   q4.acceptedCategories = ["archive"];
   assert.deepEqual(q4.acceptedCategories, ["archive", "custom"], "q4 categories after setting archive category");
   assert.equal(q4.acceptedTypes, ".doc,.txt", "q4 acceptedTypes after setting archive category");
+});
+QUnit.test("questionFile acceptedTypes property as an array, Bug#10627", function (assert) {
+  const survey = new SurveyModel({
+    elements: [
+      { type: "file", name: "q1", acceptedCategories: ["document"], acceptedTypes: [".pdf", ".jpeg"] },
+      { type: "file", name: "q2", acceptedTypes: [".pdf", ".jpeg"] }
+    ]
+  });
+  const documentTypes = ".pdf,.doc,.docx,.xls,.xlsx,.ppt,.pptx,.txt,.rtf,.odt";
+  const q1 = survey.getQuestionByName("q1") as QuestionFileModel;
+  const q2 = survey.getQuestionByName("q2") as QuestionFileModel;
+  assert.equal(q1.renderedAcceptedTypes, documentTypes + ",.jpeg", "#1");
+  assert.equal(q2.renderedAcceptedTypes, ".pdf,.jpeg", "#2");
+  q2.acceptedTypes = <any>[".doc", ".txt"];
+  assert.deepEqual(q2.acceptedCategories, ["custom"], "q2 categories after setting acceptedTypes");
+  assert.deepEqual(q2.toJSON(), { name: "q2", acceptedTypes: [".doc", ".txt"] }, "q2 json");
+  assert.equal(q2.renderedAcceptedTypes, ".doc,.txt", "#4");
 });