Remove legacy emojify function (#38965)

app/javascript/mastodon/utils/objects.test.ts

@@ -0,0 +1,27 @@
+/* eslint-disable @typescript-eslint/no-confusing-void-expression */
+import { getNestedProperty } from './objects';
+
+describe('getNestedProperty', () => {
+  test('returns the value of a nested property if it exists', () => {
+    const obj = { a: { b: { c: 42 } } };
+    expect(getNestedProperty(obj, 'a', 'b', 'c')).toBe(42);
+  });
+
+  test('returns undefined if any part of the path does not exist', () => {
+    const obj = { a: { b: { c: 42 } } };
+    expect(getNestedProperty(obj, 'a', 'x', 'c')).toBeUndefined();
+    expect(getNestedProperty(obj, 'a', 'b', 'x')).toBeUndefined();
+    expect(getNestedProperty(obj, 'x', 'b', 'c')).toBeUndefined();
+  });
+
+  test('returns undefined if the initial object is not a record', () => {
+    expect(getNestedProperty(null, 'a', 'b')).toBeUndefined();
+    expect(getNestedProperty(42, 'a', 'b')).toBeUndefined();
+    expect(getNestedProperty('string', 'a', 'b')).toBeUndefined();
+  });
+
+  test('returns undefined if no keys are provided', () => {
+    const obj = { a: 1 };
+    expect(getNestedProperty(obj)).toBeUndefined();
+  });
+});