diff --git a/__tests__/__snapshots__/project.test.ts.snap b/__tests__/__snapshots__/project.test.ts.snap
index 6694455a2..21aa5b5a1 100644
--- a/__tests__/__snapshots__/project.test.ts.snap
+++ b/__tests__/__snapshots__/project.test.ts.snap
@@ -13267,7 +13267,52 @@ exports[`project mounts the state: data after initial mount 1`] = `
 Object {
   "code": Object {
     "file0": Object {
-      "code": "",
+      "code": "
+const draw = new Draw({
+  points: [
+    [0, 0],
+    [0, 50],
+    [20, 80],
+    [56, 56],
+    [52, 52],
+    [80, 20],
+    [90, 90],
+    [100, 100],
+  ],
+})
+
+const rectangle = new Rectangle({
+  point: [200, 0],
+  style: {
+    color: ColorStyle.Blue,
+  },
+})
+
+const ellipse = new Ellipse({
+  point: [400, 0],
+})
+
+const arrow = new Arrow({
+  start: [600, 0],
+  end: [700, 100],
+})
+
+const radius = 1000
+const count = 100
+const center = [350, 50]
+
+for (let i = 0; i < count; i++) {
+  const point = Vec.rotWith(
+    Vec.add(center, [radius, 0]),
+    center,
+    (Math.PI * 2 * i) / count
+  )
+
+  const dot = new Dot({
+    point,
+  })
+}
+        ",
       "id": "file0",
       "name": "index.ts",
     },
diff --git a/types.ts b/types.ts
index 78706efd7..9750b0741 100644
--- a/types.ts
+++ b/types.ts
@@ -191,6 +191,12 @@ export interface GroupShape extends BaseShape {
   size: number[]
 }
 
+type DeepPartial<T> = {
+  [P in keyof T]?: DeepPartial<T[P]>
+}
+
+export type ShapeProps<T extends Shape> = DeepPartial<T>
+
 export type MutableShape =
   | DotShape
   | EllipseShape