fix: babel-types: ImportDeclaration: add assertions (#12263)

packages/babel-template/test/index.js

@@ -215,6 +215,39 @@ describe("@babel/template", function () {
       expect(result.test.left).toBe(value);
     });
 
+    it("should return assertions in ImportDeclaration when using .ast", () => {
+      const result = template.ast(
+        `import json from "./foo.json" assert { type: "json" };`,
+        {
+          plugins: ["importAssertions"],
+        },
+      );
+
+      expect(result.assertions[0].type).toBe("ImportAttribute");
+    });
+
+    it("should return assertions in ExportNamedDeclaration when using .ast", () => {
+      const result = template.ast(
+        `export { foo2 } from "foo.json" assert { type: "json" };`,
+        {
+          plugins: ["importAssertions"],
+        },
+      );
+
+      expect(result.assertions[0].type).toBe("ImportAttribute");
+    });
+
+    it("should return assertions in ExportDefaultDeclaration when using .ast", () => {
+      const result = template.ast(
+        `export foo2 from "foo.json" assert { type: "json" };`,
+        {
+          plugins: ["importAssertions", "exportDefaultFrom"],
+        },
+      );
+
+      expect(result.assertions[0].type).toBe("ImportAttribute");
+    });
+
     it("should replace JSX placeholder", () => {
       const result = template.expression(
         `

packages/babel-types/src/definitions/core.js

@@ -1464,6 +1464,12 @@ defineType("ExportNamedDeclaration", {
         },
       ),
     },
+    assertions: {
+      validate: chain(
+        assertValueType("array"),
+        assertNodeType("ImportAttribute"),
+      ),
+    },
     specifiers: {
       default: [],
       validate: chain(
@@ -1559,6 +1565,12 @@ defineType("ImportDeclaration", {
   visitor: ["specifiers", "source"],
   aliases: ["Statement", "Declaration", "ModuleDeclaration"],
   fields: {
+    assertions: {
+      validate: chain(
+        assertValueType("array"),
+        assertNodeType("ImportAttribute"),
+      ),
+    },
     specifiers: {
       validate: chain(
         assertValueType("array"),