**Bug Description:**
When a node has both "Flip Vertical" and "Rotation" applied, the exported JSON
(via exportAsync with format: "JSON_REST_V1") does not include any field to
indicate the flip transformation.
**Steps to Reproduce:**
1. Create a rectangle with an image fill
2. Apply "Flip Vertical" transformation
3. Apply "Rotation 180°" transformation
4. Export the node using exportAsync({ format: "JSON_REST_V1" })
**Expected Behavior:**
The JSON should include a field (e.g., in imageTransform or a separate property)
to indicate that the image has been flipped vertically.
**Actual Behavior:**
- The JSON only contains "rotation": -180
- The imageTransform matrix does not reflect the flip
- When only "Flip Vertical" is applied (without rotation), the exported image
is already flipped
- When both "Flip Vertical" and "Rotation" are applied, the exported image is
NOT flipped, but there's no indication in the JSON that CSS transform should
include scaleY(-1)
**Impact:**
This makes it impossible for code generation tools to correctly reproduce the
visual appearance when converting Figma designs to HTML/CSS.
**Test Cases:**
Case 1: Only Flip Vertical (rotation ≈ 0)
- Exported image: Already flipped ✅
- JSON: No flip indicator
- Result: Correct visual appearance
Case 2: Flip Vertical + Rotation 180°
- Exported image: NOT flipped ❌
- JSON: No flip indicator
- Result: Incorrect visual appearance (missing scaleY(-1) in CSS)
**Suggested Fix:**
Add a field to indicate flip transformations, such as:
- "flipVertical": true/false
- "flipHorizontal": true/false
Or include flip information in the imageTransform matrix.