Disable import assertions after import module

packages/babel-parser/src/parse-error/standard-errors.ts

@@ -117,6 +117,7 @@ export default {
   ImportCallSpreadArgument: "`...` is not allowed in `import()`.",
   ImportJSONBindingNotDefault:
     "A JSON module can only be imported with `default`.",
+  ImportReflectionHasAssertion: "`import module x` cannot have assertions.",
   ImportReflectionNotBinding:
     'Only `import module x from "./module"` is valid.',
   IncompatibleRegExpUVFlags:

packages/babel-parser/src/parser/statement.ts

@@ -2615,6 +2615,11 @@ export default abstract class StatementParser extends ExpressionParser {
           at: node.specifiers[0].loc.start,
         });
       }
+      if (node.assertions?.length > 0) {
+        this.raise(Errors.ImportReflectionHasAssertion, {
+          at: node.specifiers[0].loc.start,
+        });
+      }
     }
   }
 

packages/babel-parser/test/fixtures/experimental/import-reflection/invalid-assertions/input.mjs

@@ -0,0 +1 @@
+import module foo from "./module.json" assert { type: "json" }

packages/babel-parser/test/fixtures/experimental/import-reflection/invalid-assertions/options.json

@@ -0,0 +1,4 @@
+{
+  "plugins": ["importReflection", "importAssertions"],
+  "sourceType": "module"
+}

packages/babel-parser/test/fixtures/experimental/import-reflection/invalid-assertions/output.json

@@ -0,0 +1,61 @@
+{
+  "type": "File",
+  "start":0,"end":62,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":62,"index":62}},
+  "errors": [
+    "SyntaxError: `import module x` cannot have assertions. (1:14)"
+  ],
+  "program": {
+    "type": "Program",
+    "start":0,"end":62,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":62,"index":62}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":62,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":62,"index":62}},
+        "specifiers": [
+          {
+            "type": "ImportDefaultSpecifier",
+            "start":14,"end":17,"loc":{"start":{"line":1,"column":14,"index":14},"end":{"line":1,"column":17,"index":17}},
+            "local": {
+              "type": "Identifier",
+              "start":14,"end":17,"loc":{"start":{"line":1,"column":14,"index":14},"end":{"line":1,"column":17,"index":17},"identifierName":"foo"},
+              "name": "foo"
+            }
+          }
+        ],
+        "module": true,
+        "source": {
+          "type": "StringLiteral",
+          "start":23,"end":38,"loc":{"start":{"line":1,"column":23,"index":23},"end":{"line":1,"column":38,"index":38}},
+          "extra": {
+            "rawValue": "./module.json",
+            "raw": "\"./module.json\""
+          },
+          "value": "./module.json"
+        },
+        "assertions": [
+          {
+            "type": "ImportAttribute",
+            "start":48,"end":60,"loc":{"start":{"line":1,"column":48,"index":48},"end":{"line":1,"column":60,"index":60}},
+            "key": {
+              "type": "Identifier",
+              "start":48,"end":52,"loc":{"start":{"line":1,"column":48,"index":48},"end":{"line":1,"column":52,"index":52},"identifierName":"type"},
+              "name": "type"
+            },
+            "value": {
+              "type": "StringLiteral",
+              "start":54,"end":60,"loc":{"start":{"line":1,"column":54,"index":54},"end":{"line":1,"column":60,"index":60}},
+              "extra": {
+                "rawValue": "json",
+                "raw": "\"json\""
+              },
+              "value": "json"
+            }
+          }
+        ]
+      }
+    ],
+    "directives": []
+  }
+}

packages/babel-parser/test/fixtures/experimental/import-reflection/invalid-default-named-import/output.json

@@ -2,7 +2,7 @@
   "type": "File",
   "start":0,"end":46,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":46,"index":46}},
   "errors": [
-    "SyntaxError: Only `import module x from \"./module\"` is supported. (1:14)"
+    "SyntaxError: Only `import module x from \"./module\"` is valid. (1:14)"
   ],
   "program": {
     "type": "Program",

packages/babel-parser/test/fixtures/experimental/import-reflection/invalid-flow-type-import-2/output.json

@@ -2,7 +2,7 @@
   "type": "File",
   "start":0,"end":44,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":44,"index":44}},
   "errors": [
-    "SyntaxError: Only `import module x from \"./module\"` is supported. (1:19)"
+    "SyntaxError: Only `import module x from \"./module\"` is valid. (1:19)"
   ],
   "program": {
     "type": "Program",

packages/babel-parser/test/fixtures/experimental/import-reflection/invalid-named-import/output.json

@@ -2,7 +2,7 @@
   "type": "File",
   "start":0,"end":43,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":43,"index":43}},
   "errors": [
-    "SyntaxError: Only `import module x from \"./module\"` is supported. (1:16)"
+    "SyntaxError: Only `import module x from \"./module\"` is valid. (1:16)"
   ],
   "program": {
     "type": "Program",

packages/babel-parser/test/fixtures/experimental/import-reflection/invalid-namespace-import/output.json

@@ -2,7 +2,7 @@
   "type": "File",
   "start":0,"end":44,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":44,"index":44}},
   "errors": [
-    "SyntaxError: Only `import module x from \"./module\"` is supported. (1:14)"
+    "SyntaxError: Only `import module x from \"./module\"` is valid. (1:14)"
   ],
   "program": {
     "type": "Program",

packages/babel-parser/test/fixtures/experimental/import-reflection/invalid-ts-type-import-1/output.json

@@ -2,7 +2,7 @@
   "type": "File",
   "start":0,"end":44,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":44,"index":44}},
   "errors": [
-    "SyntaxError: Only `import module x from \"./module\"` is supported. (1:19)"
+    "SyntaxError: Only `import module x from \"./module\"` is valid. (1:19)"
   ],
   "program": {
     "type": "Program",