diff --git a/packages/babel-generator/test/fixtures/types/ImportAssertion/input.js b/packages/babel-generator/test/fixtures/types/ImportAssertion/input.js
index 0ebcdd146cca..5b61a1938855 100644
--- a/packages/babel-generator/test/fixtures/types/ImportAssertion/input.js
+++ b/packages/babel-generator/test/fixtures/types/ImportAssertion/input.js
@@ -1,4 +1,4 @@
 import foo1 from "foo.json" assert { type: "json" };
-export { foo2 } from "foo.json" assert { type: "json" };
+export { default as foo2 } from "foo.json" assert { type: "json" };
 export * from "foo.json" assert { type: "json" };
 export * as foo3 from "foo.json" assert { type: "json" };
diff --git a/packages/babel-generator/test/fixtures/types/ImportAssertion/output.js b/packages/babel-generator/test/fixtures/types/ImportAssertion/output.js
index 973863a3e4d8..a18a731b09d0 100644
--- a/packages/babel-generator/test/fixtures/types/ImportAssertion/output.js
+++ b/packages/babel-generator/test/fixtures/types/ImportAssertion/output.js
@@ -1,4 +1,4 @@
 import foo1 from "foo.json" assert { type: "json" };
-export { foo2 } from "foo.json" assert { type: "json" };
+export { default as foo2 } from "foo.json" assert { type: "json" };
 export * from "foo.json" assert { type: "json" };
 export * as foo3 from "foo.json" assert { type: "json" };
\ No newline at end of file
diff --git a/packages/babel-parser/src/parse-error/standard-errors.js b/packages/babel-parser/src/parse-error/standard-errors.js
index b17d6bfc2ef0..3f9747ce1d38 100644
--- a/packages/babel-parser/src/parse-error/standard-errors.js
+++ b/packages/babel-parser/src/parse-error/standard-errors.js
@@ -129,6 +129,9 @@ export default (_: typeof toParseErrorCredentials) => ({
   ),
   ImportCallNotNewExpression: _("Cannot use new with import(...)."),
   ImportCallSpreadArgument: _("`...` is not allowed in `import()`."),
+  ImportJSONBindingNotDefault: _(
+    "A JSON module can only be imported with `default`.",
+  ),
   IncompatibleRegExpUVFlags: _(
     "The 'u' and 'v' regular expression flags cannot be enabled at the same time.",
   ),
diff --git a/packages/babel-parser/src/parser/statement.js b/packages/babel-parser/src/parser/statement.js
index 968c48261f76..6ab4c73daa37 100644
--- a/packages/babel-parser/src/parser/statement.js
+++ b/packages/babel-parser/src/parser/statement.js
@@ -2182,6 +2182,7 @@ export default class StatementParser extends ExpressionParser {
       const assertions = this.maybeParseImportAssertions();
       if (assertions) {
         node.assertions = assertions;
+        this.checkJSONModuleImport(node);
       }
     } else if (expect) {
       this.unexpected();
@@ -2399,6 +2400,56 @@ export default class StatementParser extends ExpressionParser {
     return this.parseIdentifier(true);
   }
 
+  isJSONModuleImport(
+    node:
+      | N.ExportAllDeclaration
+      | N.ExportNamedDeclaration
+      | N.ImportDeclaration,
+  ): boolean {
+    if (node.assertions != null) {
+      return node.assertions.some(({ key, value }) => {
+        return (
+          value.value === "json" &&
+          (key.type === "Identifier"
+            ? key.name === "type"
+            : key.value === "type")
+        );
+      });
+    }
+    return false;
+  }
+
+  checkJSONModuleImport(
+    node:
+      | N.ExportAllDeclaration
+      | N.ExportNamedDeclaration
+      | N.ImportDeclaration,
+  ) {
+    if (this.isJSONModuleImport(node) && node.type !== "ExportAllDeclaration") {
+      const { specifiers } = node;
+      if (node.specifiers != null) {
+        const nonDefaultNamedSpecifier = specifiers.find(specifier => {
+          let imported;
+          if (specifier.type === "ExportSpecifier") {
+            imported = specifier.local;
+          } else if (specifier.type === "ImportSpecifier") {
+            imported = specifier.imported;
+          }
+          if (imported !== undefined) {
+            return imported.type === "Identifier"
+              ? imported.name !== "default"
+              : imported.value !== "default";
+          }
+        });
+        if (nonDefaultNamedSpecifier !== undefined) {
+          this.raise(Errors.ImportJSONBindingNotDefault, {
+            at: nonDefaultNamedSpecifier.loc.start,
+          });
+        }
+      }
+    }
+  }
+
   // Parses import declaration.
   // https://tc39.es/ecma262/#prod-ImportDeclaration
 
@@ -2437,6 +2488,7 @@ export default class StatementParser extends ExpressionParser {
         node.attributes = attributes;
       }
     }
+    this.checkJSONModuleImport(node);
 
     this.semicolon();
     return this.finishNode(node, "ImportDeclaration");
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/invalid-syntax-export-with-repeated-type/input.js b/packages/babel-parser/test/fixtures/experimental/import-assertions/invalid-syntax-export-with-repeated-type/input.js
new file mode 100644
index 000000000000..1e421736cffd
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/invalid-syntax-export-with-repeated-type/input.js
@@ -0,0 +1 @@
+export { default as foo } from "foo.json" assert { type: "json", type: "html" };
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/invalid-syntax-export-with-repeated-type/output.json b/packages/babel-parser/test/fixtures/experimental/import-assertions/invalid-syntax-export-with-repeated-type/output.json
new file mode 100644
index 000000000000..70cab9f66df6
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/invalid-syntax-export-with-repeated-type/output.json
@@ -0,0 +1,84 @@
+{
+  "type": "File",
+  "start":0,"end":80,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":80,"index":80}},
+  "errors": [
+    "SyntaxError: Duplicate key \"type\" is not allowed in module attributes. (1:65)"
+  ],
+  "program": {
+    "type": "Program",
+    "start":0,"end":80,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":80,"index":80}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ExportNamedDeclaration",
+        "start":0,"end":80,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":80,"index":80}},
+        "specifiers": [
+          {
+            "type": "ExportSpecifier",
+            "start":9,"end":23,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":23,"index":23}},
+            "local": {
+              "type": "Identifier",
+              "start":9,"end":16,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":16,"index":16},"identifierName":"default"},
+              "name": "default"
+            },
+            "exported": {
+              "type": "Identifier",
+              "start":20,"end":23,"loc":{"start":{"line":1,"column":20,"index":20},"end":{"line":1,"column":23,"index":23},"identifierName":"foo"},
+              "name": "foo"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":31,"end":41,"loc":{"start":{"line":1,"column":31,"index":31},"end":{"line":1,"column":41,"index":41}},
+          "extra": {
+            "rawValue": "foo.json",
+            "raw": "\"foo.json\""
+          },
+          "value": "foo.json"
+        },
+        "declaration": null,
+        "assertions": [
+          {
+            "type": "ImportAttribute",
+            "start":51,"end":63,"loc":{"start":{"line":1,"column":51,"index":51},"end":{"line":1,"column":63,"index":63}},
+            "key": {
+              "type": "Identifier",
+              "start":51,"end":55,"loc":{"start":{"line":1,"column":51,"index":51},"end":{"line":1,"column":55,"index":55},"identifierName":"type"},
+              "name": "type"
+            },
+            "value": {
+              "type": "StringLiteral",
+              "start":57,"end":63,"loc":{"start":{"line":1,"column":57,"index":57},"end":{"line":1,"column":63,"index":63}},
+              "extra": {
+                "rawValue": "json",
+                "raw": "\"json\""
+              },
+              "value": "json"
+            }
+          },
+          {
+            "type": "ImportAttribute",
+            "start":65,"end":77,"loc":{"start":{"line":1,"column":65,"index":65},"end":{"line":1,"column":77,"index":77}},
+            "key": {
+              "type": "Identifier",
+              "start":65,"end":69,"loc":{"start":{"line":1,"column":65,"index":65},"end":{"line":1,"column":69,"index":69},"identifierName":"type"},
+              "name": "type"
+            },
+            "value": {
+              "type": "StringLiteral",
+              "start":71,"end":77,"loc":{"start":{"line":1,"column":71,"index":71},"end":{"line":1,"column":77,"index":77}},
+              "extra": {
+                "rawValue": "html",
+                "raw": "\"html\""
+              },
+              "value": "html"
+            }
+          }
+        ]
+      }
+    ],
+    "directives": []
+  }
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/trailing-comma/input.js b/packages/babel-parser/test/fixtures/experimental/import-assertions/trailing-comma/input.js
index 910b9aa32d84..077d150d81ae 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/trailing-comma/input.js
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/trailing-comma/input.js
@@ -1,2 +1,2 @@
 import foo from "foo" assert { type: "json", }
-export { foo } from "foo" assert { type: "json", }
+export { default as foo } from "foo" assert { type: "json", }
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/trailing-comma/output.json b/packages/babel-parser/test/fixtures/experimental/import-assertions/trailing-comma/output.json
index 6be046eed1b2..77f11f2c63a2 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/trailing-comma/output.json
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/trailing-comma/output.json
@@ -1,9 +1,9 @@
 {
   "type": "File",
-  "start":0,"end":97,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":50,"index":97}},
+  "start":0,"end":108,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":61,"index":108}},
   "program": {
     "type": "Program",
-    "start":0,"end":97,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":50,"index":97}},
+    "start":0,"end":108,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":61,"index":108}},
     "sourceType": "module",
     "interpreter": null,
     "body": [
@@ -53,26 +53,26 @@
       },
       {
         "type": "ExportNamedDeclaration",
-        "start":47,"end":97,"loc":{"start":{"line":2,"column":0,"index":47},"end":{"line":2,"column":50,"index":97}},
+        "start":47,"end":108,"loc":{"start":{"line":2,"column":0,"index":47},"end":{"line":2,"column":61,"index":108}},
         "specifiers": [
           {
             "type": "ExportSpecifier",
-            "start":56,"end":59,"loc":{"start":{"line":2,"column":9,"index":56},"end":{"line":2,"column":12,"index":59}},
+            "start":56,"end":70,"loc":{"start":{"line":2,"column":9,"index":56},"end":{"line":2,"column":23,"index":70}},
             "local": {
               "type": "Identifier",
-              "start":56,"end":59,"loc":{"start":{"line":2,"column":9,"index":56},"end":{"line":2,"column":12,"index":59},"identifierName":"foo"},
-              "name": "foo"
+              "start":56,"end":63,"loc":{"start":{"line":2,"column":9,"index":56},"end":{"line":2,"column":16,"index":63},"identifierName":"default"},
+              "name": "default"
             },
             "exported": {
               "type": "Identifier",
-              "start":56,"end":59,"loc":{"start":{"line":2,"column":9,"index":56},"end":{"line":2,"column":12,"index":59},"identifierName":"foo"},
+              "start":67,"end":70,"loc":{"start":{"line":2,"column":20,"index":67},"end":{"line":2,"column":23,"index":70},"identifierName":"foo"},
               "name": "foo"
             }
           }
         ],
         "source": {
           "type": "StringLiteral",
-          "start":67,"end":72,"loc":{"start":{"line":2,"column":20,"index":67},"end":{"line":2,"column":25,"index":72}},
+          "start":78,"end":83,"loc":{"start":{"line":2,"column":31,"index":78},"end":{"line":2,"column":36,"index":83}},
           "extra": {
             "rawValue": "foo",
             "raw": "\"foo\""
@@ -83,15 +83,15 @@
         "assertions": [
           {
             "type": "ImportAttribute",
-            "start":82,"end":94,"loc":{"start":{"line":2,"column":35,"index":82},"end":{"line":2,"column":47,"index":94}},
+            "start":93,"end":105,"loc":{"start":{"line":2,"column":46,"index":93},"end":{"line":2,"column":58,"index":105}},
             "key": {
               "type": "Identifier",
-              "start":82,"end":86,"loc":{"start":{"line":2,"column":35,"index":82},"end":{"line":2,"column":39,"index":86},"identifierName":"type"},
+              "start":93,"end":97,"loc":{"start":{"line":2,"column":46,"index":93},"end":{"line":2,"column":50,"index":97},"identifierName":"type"},
               "name": "type"
             },
             "value": {
               "type": "StringLiteral",
-              "start":88,"end":94,"loc":{"start":{"line":2,"column":41,"index":88},"end":{"line":2,"column":47,"index":94}},
+              "start":99,"end":105,"loc":{"start":{"line":2,"column":52,"index":99},"end":{"line":2,"column":58,"index":105}},
               "extra": {
                 "rawValue": "json",
                 "raw": "\"json\""
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-empty-assertion/input.js b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-empty-assertion/input.js
new file mode 100644
index 000000000000..758659de4037
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-empty-assertion/input.js
@@ -0,0 +1,4 @@
+import foo, { bar } from "foo" assert {};
+import * as ns from "foo" assert {};
+export { quux } from "foo" assert {};
+export * as ns2 from "foo" assert {};
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-empty-assertion/output.json b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-empty-assertion/output.json
new file mode 100644
index 000000000000..7bb565c095bc
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-empty-assertion/output.json
@@ -0,0 +1,133 @@
+{
+  "type": "File",
+  "start":0,"end":154,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":4,"column":37,"index":154}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":154,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":4,"column":37,"index":154}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":41,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":41,"index":41}},
+        "specifiers": [
+          {
+            "type": "ImportDefaultSpecifier",
+            "start":7,"end":10,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":10,"index":10}},
+            "local": {
+              "type": "Identifier",
+              "start":7,"end":10,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":10,"index":10},"identifierName":"foo"},
+              "name": "foo"
+            }
+          },
+          {
+            "type": "ImportSpecifier",
+            "start":14,"end":17,"loc":{"start":{"line":1,"column":14,"index":14},"end":{"line":1,"column":17,"index":17}},
+            "imported": {
+              "type": "Identifier",
+              "start":14,"end":17,"loc":{"start":{"line":1,"column":14,"index":14},"end":{"line":1,"column":17,"index":17},"identifierName":"bar"},
+              "name": "bar"
+            },
+            "local": {
+              "type": "Identifier",
+              "start":14,"end":17,"loc":{"start":{"line":1,"column":14,"index":14},"end":{"line":1,"column":17,"index":17},"identifierName":"bar"},
+              "name": "bar"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":25,"end":30,"loc":{"start":{"line":1,"column":25,"index":25},"end":{"line":1,"column":30,"index":30}},
+          "extra": {
+            "rawValue": "foo",
+            "raw": "\"foo\""
+          },
+          "value": "foo"
+        },
+        "assertions": []
+      },
+      {
+        "type": "ImportDeclaration",
+        "start":42,"end":78,"loc":{"start":{"line":2,"column":0,"index":42},"end":{"line":2,"column":36,"index":78}},
+        "specifiers": [
+          {
+            "type": "ImportNamespaceSpecifier",
+            "start":49,"end":56,"loc":{"start":{"line":2,"column":7,"index":49},"end":{"line":2,"column":14,"index":56}},
+            "local": {
+              "type": "Identifier",
+              "start":54,"end":56,"loc":{"start":{"line":2,"column":12,"index":54},"end":{"line":2,"column":14,"index":56},"identifierName":"ns"},
+              "name": "ns"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":62,"end":67,"loc":{"start":{"line":2,"column":20,"index":62},"end":{"line":2,"column":25,"index":67}},
+          "extra": {
+            "rawValue": "foo",
+            "raw": "\"foo\""
+          },
+          "value": "foo"
+        },
+        "assertions": []
+      },
+      {
+        "type": "ExportNamedDeclaration",
+        "start":79,"end":116,"loc":{"start":{"line":3,"column":0,"index":79},"end":{"line":3,"column":37,"index":116}},
+        "specifiers": [
+          {
+            "type": "ExportSpecifier",
+            "start":88,"end":92,"loc":{"start":{"line":3,"column":9,"index":88},"end":{"line":3,"column":13,"index":92}},
+            "local": {
+              "type": "Identifier",
+              "start":88,"end":92,"loc":{"start":{"line":3,"column":9,"index":88},"end":{"line":3,"column":13,"index":92},"identifierName":"quux"},
+              "name": "quux"
+            },
+            "exported": {
+              "type": "Identifier",
+              "start":88,"end":92,"loc":{"start":{"line":3,"column":9,"index":88},"end":{"line":3,"column":13,"index":92},"identifierName":"quux"},
+              "name": "quux"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":100,"end":105,"loc":{"start":{"line":3,"column":21,"index":100},"end":{"line":3,"column":26,"index":105}},
+          "extra": {
+            "rawValue": "foo",
+            "raw": "\"foo\""
+          },
+          "value": "foo"
+        },
+        "declaration": null,
+        "assertions": []
+      },
+      {
+        "type": "ExportNamedDeclaration",
+        "start":117,"end":154,"loc":{"start":{"line":4,"column":0,"index":117},"end":{"line":4,"column":37,"index":154}},
+        "specifiers": [
+          {
+            "type": "ExportNamespaceSpecifier",
+            "start":124,"end":132,"loc":{"start":{"line":4,"column":7,"index":124},"end":{"line":4,"column":15,"index":132}},
+            "exported": {
+              "type": "Identifier",
+              "start":129,"end":132,"loc":{"start":{"line":4,"column":12,"index":129},"end":{"line":4,"column":15,"index":132},"identifierName":"ns2"},
+              "name": "ns2"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":138,"end":143,"loc":{"start":{"line":4,"column":21,"index":138},"end":{"line":4,"column":26,"index":143}},
+          "extra": {
+            "rawValue": "foo",
+            "raw": "\"foo\""
+          },
+          "value": "foo"
+        },
+        "assertions": []
+      }
+    ],
+    "directives": []
+  }
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-and-attributes-multiple-lines/input.js b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-and-attributes-multiple-lines/input.js
index 6af100604f2a..a3830551716f 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-and-attributes-multiple-lines/input.js
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-and-attributes-multiple-lines/input.js
@@ -1,2 +1,2 @@
-export { x } from "foo" assert
+export { default as x } from "foo" assert
 { type: "json" }
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-and-attributes-multiple-lines/output.json b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-and-attributes-multiple-lines/output.json
index aebe93aaf1c9..88f1415f189c 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-and-attributes-multiple-lines/output.json
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-and-attributes-multiple-lines/output.json
@@ -1,34 +1,34 @@
 {
   "type": "File",
-  "start":0,"end":47,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":16,"index":47}},
+  "start":0,"end":58,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":16,"index":58}},
   "program": {
     "type": "Program",
-    "start":0,"end":47,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":16,"index":47}},
+    "start":0,"end":58,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":16,"index":58}},
     "sourceType": "module",
     "interpreter": null,
     "body": [
       {
         "type": "ExportNamedDeclaration",
-        "start":0,"end":47,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":16,"index":47}},
+        "start":0,"end":58,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":16,"index":58}},
         "specifiers": [
           {
             "type": "ExportSpecifier",
-            "start":9,"end":10,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":10,"index":10}},
+            "start":9,"end":21,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":21,"index":21}},
             "local": {
               "type": "Identifier",
-              "start":9,"end":10,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":10,"index":10},"identifierName":"x"},
-              "name": "x"
+              "start":9,"end":16,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":16,"index":16},"identifierName":"default"},
+              "name": "default"
             },
             "exported": {
               "type": "Identifier",
-              "start":9,"end":10,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":10,"index":10},"identifierName":"x"},
+              "start":20,"end":21,"loc":{"start":{"line":1,"column":20,"index":20},"end":{"line":1,"column":21,"index":21},"identifierName":"x"},
               "name": "x"
             }
           }
         ],
         "source": {
           "type": "StringLiteral",
-          "start":18,"end":23,"loc":{"start":{"line":1,"column":18,"index":18},"end":{"line":1,"column":23,"index":23}},
+          "start":29,"end":34,"loc":{"start":{"line":1,"column":29,"index":29},"end":{"line":1,"column":34,"index":34}},
           "extra": {
             "rawValue": "foo",
             "raw": "\"foo\""
@@ -39,15 +39,15 @@
         "assertions": [
           {
             "type": "ImportAttribute",
-            "start":33,"end":45,"loc":{"start":{"line":2,"column":2,"index":33},"end":{"line":2,"column":14,"index":45}},
+            "start":44,"end":56,"loc":{"start":{"line":2,"column":2,"index":44},"end":{"line":2,"column":14,"index":56}},
             "key": {
               "type": "Identifier",
-              "start":33,"end":37,"loc":{"start":{"line":2,"column":2,"index":33},"end":{"line":2,"column":6,"index":37},"identifierName":"type"},
+              "start":44,"end":48,"loc":{"start":{"line":2,"column":2,"index":44},"end":{"line":2,"column":6,"index":48},"identifierName":"type"},
               "name": "type"
             },
             "value": {
               "type": "StringLiteral",
-              "start":39,"end":45,"loc":{"start":{"line":2,"column":8,"index":39},"end":{"line":2,"column":14,"index":45}},
+              "start":50,"end":56,"loc":{"start":{"line":2,"column":8,"index":50},"end":{"line":2,"column":14,"index":56}},
               "extra": {
                 "rawValue": "json",
                 "raw": "\"json\""
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes-and-value/input.js b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes-and-value/input.js
index 92c6eae4f07b..567f6335c84c 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes-and-value/input.js
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes-and-value/input.js
@@ -1,2 +1,2 @@
-export { x } from "foo" assert { type: "json" }
+export { "default" as x } from "foo" assert { type: "json" }
 [0]
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes-and-value/output.json b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes-and-value/output.json
index f1d2151e381f..c947ca3ee8d4 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes-and-value/output.json
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes-and-value/output.json
@@ -1,34 +1,38 @@
 {
   "type": "File",
-  "start":0,"end":51,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":3,"index":51}},
+  "start":0,"end":64,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":3,"index":64}},
   "program": {
     "type": "Program",
-    "start":0,"end":51,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":3,"index":51}},
+    "start":0,"end":64,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":2,"column":3,"index":64}},
     "sourceType": "module",
     "interpreter": null,
     "body": [
       {
         "type": "ExportNamedDeclaration",
-        "start":0,"end":47,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":47,"index":47}},
+        "start":0,"end":60,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":60,"index":60}},
         "specifiers": [
           {
             "type": "ExportSpecifier",
-            "start":9,"end":10,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":10,"index":10}},
+            "start":9,"end":23,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":23,"index":23}},
             "local": {
-              "type": "Identifier",
-              "start":9,"end":10,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":10,"index":10},"identifierName":"x"},
-              "name": "x"
+              "type": "StringLiteral",
+              "start":9,"end":18,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":18,"index":18}},
+              "extra": {
+                "rawValue": "default",
+                "raw": "\"default\""
+              },
+              "value": "default"
             },
             "exported": {
               "type": "Identifier",
-              "start":9,"end":10,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":10,"index":10},"identifierName":"x"},
+              "start":22,"end":23,"loc":{"start":{"line":1,"column":22,"index":22},"end":{"line":1,"column":23,"index":23},"identifierName":"x"},
               "name": "x"
             }
           }
         ],
         "source": {
           "type": "StringLiteral",
-          "start":18,"end":23,"loc":{"start":{"line":1,"column":18,"index":18},"end":{"line":1,"column":23,"index":23}},
+          "start":31,"end":36,"loc":{"start":{"line":1,"column":31,"index":31},"end":{"line":1,"column":36,"index":36}},
           "extra": {
             "rawValue": "foo",
             "raw": "\"foo\""
@@ -39,15 +43,15 @@
         "assertions": [
           {
             "type": "ImportAttribute",
-            "start":33,"end":45,"loc":{"start":{"line":1,"column":33,"index":33},"end":{"line":1,"column":45,"index":45}},
+            "start":46,"end":58,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":58,"index":58}},
             "key": {
               "type": "Identifier",
-              "start":33,"end":37,"loc":{"start":{"line":1,"column":33,"index":33},"end":{"line":1,"column":37,"index":37},"identifierName":"type"},
+              "start":46,"end":50,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":50,"index":50},"identifierName":"type"},
               "name": "type"
             },
             "value": {
               "type": "StringLiteral",
-              "start":39,"end":45,"loc":{"start":{"line":1,"column":39,"index":39},"end":{"line":1,"column":45,"index":45}},
+              "start":52,"end":58,"loc":{"start":{"line":1,"column":52,"index":52},"end":{"line":1,"column":58,"index":58}},
               "extra": {
                 "rawValue": "json",
                 "raw": "\"json\""
@@ -59,14 +63,14 @@
       },
       {
         "type": "ExpressionStatement",
-        "start":48,"end":51,"loc":{"start":{"line":2,"column":0,"index":48},"end":{"line":2,"column":3,"index":51}},
+        "start":61,"end":64,"loc":{"start":{"line":2,"column":0,"index":61},"end":{"line":2,"column":3,"index":64}},
         "expression": {
           "type": "ArrayExpression",
-          "start":48,"end":51,"loc":{"start":{"line":2,"column":0,"index":48},"end":{"line":2,"column":3,"index":51}},
+          "start":61,"end":64,"loc":{"start":{"line":2,"column":0,"index":61},"end":{"line":2,"column":3,"index":64}},
           "elements": [
             {
               "type": "NumericLiteral",
-              "start":49,"end":50,"loc":{"start":{"line":2,"column":1,"index":49},"end":{"line":2,"column":2,"index":50}},
+              "start":62,"end":63,"loc":{"start":{"line":2,"column":1,"index":62},"end":{"line":2,"column":2,"index":63}},
               "extra": {
                 "rawValue": 0,
                 "raw": "0"
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes/input.js b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes/input.js
index 598db769da88..08775ba22ed4 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes/input.js
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes/input.js
@@ -1 +1 @@
-export { foo } from "foo.json" assert { type: "json" };
+export { default as foo } from "foo.json" assert { type: "json" };
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes/output.json b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes/output.json
index fa00c3031691..ef4f180d3be1 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes/output.json
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-attributes/output.json
@@ -1,34 +1,34 @@
 {
   "type": "File",
-  "start":0,"end":55,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":55,"index":55}},
+  "start":0,"end":66,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":66,"index":66}},
   "program": {
     "type": "Program",
-    "start":0,"end":55,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":55,"index":55}},
+    "start":0,"end":66,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":66,"index":66}},
     "sourceType": "module",
     "interpreter": null,
     "body": [
       {
         "type": "ExportNamedDeclaration",
-        "start":0,"end":55,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":55,"index":55}},
+        "start":0,"end":66,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":66,"index":66}},
         "specifiers": [
           {
             "type": "ExportSpecifier",
-            "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12}},
+            "start":9,"end":23,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":23,"index":23}},
             "local": {
               "type": "Identifier",
-              "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12},"identifierName":"foo"},
-              "name": "foo"
+              "start":9,"end":16,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":16,"index":16},"identifierName":"default"},
+              "name": "default"
             },
             "exported": {
               "type": "Identifier",
-              "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12},"identifierName":"foo"},
+              "start":20,"end":23,"loc":{"start":{"line":1,"column":20,"index":20},"end":{"line":1,"column":23,"index":23},"identifierName":"foo"},
               "name": "foo"
             }
           }
         ],
         "source": {
           "type": "StringLiteral",
-          "start":20,"end":30,"loc":{"start":{"line":1,"column":20,"index":20},"end":{"line":1,"column":30,"index":30}},
+          "start":31,"end":41,"loc":{"start":{"line":1,"column":31,"index":31},"end":{"line":1,"column":41,"index":41}},
           "extra": {
             "rawValue": "foo.json",
             "raw": "\"foo.json\""
@@ -39,15 +39,15 @@
         "assertions": [
           {
             "type": "ImportAttribute",
-            "start":40,"end":52,"loc":{"start":{"line":1,"column":40,"index":40},"end":{"line":1,"column":52,"index":52}},
+            "start":51,"end":63,"loc":{"start":{"line":1,"column":51,"index":51},"end":{"line":1,"column":63,"index":63}},
             "key": {
               "type": "Identifier",
-              "start":40,"end":44,"loc":{"start":{"line":1,"column":40,"index":40},"end":{"line":1,"column":44,"index":44},"identifierName":"type"},
+              "start":51,"end":55,"loc":{"start":{"line":1,"column":51,"index":51},"end":{"line":1,"column":55,"index":55},"identifierName":"type"},
               "name": "type"
             },
             "value": {
               "type": "StringLiteral",
-              "start":46,"end":52,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":52,"index":52}},
+              "start":57,"end":63,"loc":{"start":{"line":1,"column":57,"index":57},"end":{"line":1,"column":63,"index":63}},
               "extra": {
                 "rawValue": "json",
                 "raw": "\"json\""
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-invalid-value/input.js b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-invalid-value/input.js
index c2aec91e1bec..23710fef0b6d 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-invalid-value/input.js
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-invalid-value/input.js
@@ -1 +1 @@
-export { foo } from "foo.json" assert { type: "json", lazy: true, startAtLine: 1 };
+export { default } from "foo.json" assert { type: "json", lazy: true, startAtLine: 1 };
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-invalid-value/options.json b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-invalid-value/options.json
index 274b43a4b5c8..75cee0d1de51 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-invalid-value/options.json
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-invalid-value/options.json
@@ -5,5 +5,5 @@
     ]
   ],
   "sourceType": "module",
-  "throws": "Only string literals are allowed as module attribute values. (1:60)"
-}
\ No newline at end of file
+  "throws": "Only string literals are allowed as module attribute values. (1:64)"
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-no-type-attribute/input.js b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-no-type-attribute/input.js
index 49542fec11e2..5dbd2c429901 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-no-type-attribute/input.js
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-no-type-attribute/input.js
@@ -1 +1 @@
-export { foo } from "foo.json" assert { lazy: "true" };
+export { default } from "foo.json" assert { lazy: "true" };
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-no-type-attribute/output.json b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-no-type-attribute/output.json
index 5bfe7e133313..3342a818b5fb 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-no-type-attribute/output.json
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-no-type-attribute/output.json
@@ -1,34 +1,34 @@
 {
   "type": "File",
-  "start":0,"end":55,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":55,"index":55}},
+  "start":0,"end":59,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":59,"index":59}},
   "program": {
     "type": "Program",
-    "start":0,"end":55,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":55,"index":55}},
+    "start":0,"end":59,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":59,"index":59}},
     "sourceType": "module",
     "interpreter": null,
     "body": [
       {
         "type": "ExportNamedDeclaration",
-        "start":0,"end":55,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":55,"index":55}},
+        "start":0,"end":59,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":59,"index":59}},
         "specifiers": [
           {
             "type": "ExportSpecifier",
-            "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12}},
+            "start":9,"end":16,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":16,"index":16}},
             "local": {
               "type": "Identifier",
-              "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12},"identifierName":"foo"},
-              "name": "foo"
+              "start":9,"end":16,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":16,"index":16},"identifierName":"default"},
+              "name": "default"
             },
             "exported": {
               "type": "Identifier",
-              "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12},"identifierName":"foo"},
-              "name": "foo"
+              "start":9,"end":16,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":16,"index":16},"identifierName":"default"},
+              "name": "default"
             }
           }
         ],
         "source": {
           "type": "StringLiteral",
-          "start":20,"end":30,"loc":{"start":{"line":1,"column":20,"index":20},"end":{"line":1,"column":30,"index":30}},
+          "start":24,"end":34,"loc":{"start":{"line":1,"column":24,"index":24},"end":{"line":1,"column":34,"index":34}},
           "extra": {
             "rawValue": "foo.json",
             "raw": "\"foo.json\""
@@ -39,15 +39,15 @@
         "assertions": [
           {
             "type": "ImportAttribute",
-            "start":40,"end":52,"loc":{"start":{"line":1,"column":40,"index":40},"end":{"line":1,"column":52,"index":52}},
+            "start":44,"end":56,"loc":{"start":{"line":1,"column":44,"index":44},"end":{"line":1,"column":56,"index":56}},
             "key": {
               "type": "Identifier",
-              "start":40,"end":44,"loc":{"start":{"line":1,"column":40,"index":40},"end":{"line":1,"column":44,"index":44},"identifierName":"lazy"},
+              "start":44,"end":48,"loc":{"start":{"line":1,"column":44,"index":44},"end":{"line":1,"column":48,"index":48},"identifierName":"lazy"},
               "name": "lazy"
             },
             "value": {
               "type": "StringLiteral",
-              "start":46,"end":52,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":52,"index":52}},
+              "start":50,"end":56,"loc":{"start":{"line":1,"column":50,"index":50},"end":{"line":1,"column":56,"index":56}},
               "extra": {
                 "rawValue": "true",
                 "raw": "\"true\""
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-object-method-attribute/input.js b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-object-method-attribute/input.js
index 408a6c237aa8..8acdf464a395 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-object-method-attribute/input.js
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-object-method-attribute/input.js
@@ -1 +1 @@
-export { foo } from "foo.json" assert { type: "json", hasOwnProperty: "true" };
+export { default } from "foo.json" assert { type: "json", hasOwnProperty: "true" };
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-object-method-attribute/output.json b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-object-method-attribute/output.json
index bf0067fbade0..4a4a18b389c0 100644
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-object-method-attribute/output.json
+++ b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-object-method-attribute/output.json
@@ -1,34 +1,34 @@
 {
   "type": "File",
-  "start":0,"end":79,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":79,"index":79}},
+  "start":0,"end":83,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":83,"index":83}},
   "program": {
     "type": "Program",
-    "start":0,"end":79,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":79,"index":79}},
+    "start":0,"end":83,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":83,"index":83}},
     "sourceType": "module",
     "interpreter": null,
     "body": [
       {
         "type": "ExportNamedDeclaration",
-        "start":0,"end":79,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":79,"index":79}},
+        "start":0,"end":83,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":83,"index":83}},
         "specifiers": [
           {
             "type": "ExportSpecifier",
-            "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12}},
+            "start":9,"end":16,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":16,"index":16}},
             "local": {
               "type": "Identifier",
-              "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12},"identifierName":"foo"},
-              "name": "foo"
+              "start":9,"end":16,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":16,"index":16},"identifierName":"default"},
+              "name": "default"
             },
             "exported": {
               "type": "Identifier",
-              "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12},"identifierName":"foo"},
-              "name": "foo"
+              "start":9,"end":16,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":16,"index":16},"identifierName":"default"},
+              "name": "default"
             }
           }
         ],
         "source": {
           "type": "StringLiteral",
-          "start":20,"end":30,"loc":{"start":{"line":1,"column":20,"index":20},"end":{"line":1,"column":30,"index":30}},
+          "start":24,"end":34,"loc":{"start":{"line":1,"column":24,"index":24},"end":{"line":1,"column":34,"index":34}},
           "extra": {
             "rawValue": "foo.json",
             "raw": "\"foo.json\""
@@ -39,15 +39,15 @@
         "assertions": [
           {
             "type": "ImportAttribute",
-            "start":40,"end":52,"loc":{"start":{"line":1,"column":40,"index":40},"end":{"line":1,"column":52,"index":52}},
+            "start":44,"end":56,"loc":{"start":{"line":1,"column":44,"index":44},"end":{"line":1,"column":56,"index":56}},
             "key": {
               "type": "Identifier",
-              "start":40,"end":44,"loc":{"start":{"line":1,"column":40,"index":40},"end":{"line":1,"column":44,"index":44},"identifierName":"type"},
+              "start":44,"end":48,"loc":{"start":{"line":1,"column":44,"index":44},"end":{"line":1,"column":48,"index":48},"identifierName":"type"},
               "name": "type"
             },
             "value": {
               "type": "StringLiteral",
-              "start":46,"end":52,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":52,"index":52}},
+              "start":50,"end":56,"loc":{"start":{"line":1,"column":50,"index":50},"end":{"line":1,"column":56,"index":56}},
               "extra": {
                 "rawValue": "json",
                 "raw": "\"json\""
@@ -57,15 +57,15 @@
           },
           {
             "type": "ImportAttribute",
-            "start":54,"end":76,"loc":{"start":{"line":1,"column":54,"index":54},"end":{"line":1,"column":76,"index":76}},
+            "start":58,"end":80,"loc":{"start":{"line":1,"column":58,"index":58},"end":{"line":1,"column":80,"index":80}},
             "key": {
               "type": "Identifier",
-              "start":54,"end":68,"loc":{"start":{"line":1,"column":54,"index":54},"end":{"line":1,"column":68,"index":68},"identifierName":"hasOwnProperty"},
+              "start":58,"end":72,"loc":{"start":{"line":1,"column":58,"index":58},"end":{"line":1,"column":72,"index":72},"identifierName":"hasOwnProperty"},
               "name": "hasOwnProperty"
             },
             "value": {
               "type": "StringLiteral",
-              "start":70,"end":76,"loc":{"start":{"line":1,"column":70,"index":70},"end":{"line":1,"column":76,"index":76}},
+              "start":74,"end":80,"loc":{"start":{"line":1,"column":74,"index":74},"end":{"line":1,"column":80,"index":80}},
               "extra": {
                 "rawValue": "true",
                 "raw": "\"true\""
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-repeated-type/input.js b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-repeated-type/input.js
deleted file mode 100644
index 26c046c2e8a1..000000000000
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-repeated-type/input.js
+++ /dev/null
@@ -1 +0,0 @@
-export { foo } from "foo.json" assert { type: "json", type: "html" };
diff --git a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-repeated-type/output.json b/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-repeated-type/output.json
deleted file mode 100644
index 193329253554..000000000000
--- a/packages/babel-parser/test/fixtures/experimental/import-assertions/valid-syntax-export-with-repeated-type/output.json
+++ /dev/null
@@ -1,84 +0,0 @@
-{
-  "type": "File",
-  "start":0,"end":69,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":69,"index":69}},
-  "errors": [
-    "SyntaxError: Duplicate key \"type\" is not allowed in module attributes. (1:54)"
-  ],
-  "program": {
-    "type": "Program",
-    "start":0,"end":69,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":69,"index":69}},
-    "sourceType": "module",
-    "interpreter": null,
-    "body": [
-      {
-        "type": "ExportNamedDeclaration",
-        "start":0,"end":69,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":69,"index":69}},
-        "specifiers": [
-          {
-            "type": "ExportSpecifier",
-            "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12}},
-            "local": {
-              "type": "Identifier",
-              "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12},"identifierName":"foo"},
-              "name": "foo"
-            },
-            "exported": {
-              "type": "Identifier",
-              "start":9,"end":12,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":12,"index":12},"identifierName":"foo"},
-              "name": "foo"
-            }
-          }
-        ],
-        "source": {
-          "type": "StringLiteral",
-          "start":20,"end":30,"loc":{"start":{"line":1,"column":20,"index":20},"end":{"line":1,"column":30,"index":30}},
-          "extra": {
-            "rawValue": "foo.json",
-            "raw": "\"foo.json\""
-          },
-          "value": "foo.json"
-        },
-        "declaration": null,
-        "assertions": [
-          {
-            "type": "ImportAttribute",
-            "start":40,"end":52,"loc":{"start":{"line":1,"column":40,"index":40},"end":{"line":1,"column":52,"index":52}},
-            "key": {
-              "type": "Identifier",
-              "start":40,"end":44,"loc":{"start":{"line":1,"column":40,"index":40},"end":{"line":1,"column":44,"index":44},"identifierName":"type"},
-              "name": "type"
-            },
-            "value": {
-              "type": "StringLiteral",
-              "start":46,"end":52,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":52,"index":52}},
-              "extra": {
-                "rawValue": "json",
-                "raw": "\"json\""
-              },
-              "value": "json"
-            }
-          },
-          {
-            "type": "ImportAttribute",
-            "start":54,"end":66,"loc":{"start":{"line":1,"column":54,"index":54},"end":{"line":1,"column":66,"index":66}},
-            "key": {
-              "type": "Identifier",
-              "start":54,"end":58,"loc":{"start":{"line":1,"column":54,"index":54},"end":{"line":1,"column":58,"index":58},"identifierName":"type"},
-              "name": "type"
-            },
-            "value": {
-              "type": "StringLiteral",
-              "start":60,"end":66,"loc":{"start":{"line":1,"column":60,"index":60},"end":{"line":1,"column":66,"index":66}},
-              "extra": {
-                "rawValue": "html",
-                "raw": "\"html\""
-              },
-              "value": "html"
-            }
-          }
-        ]
-      }
-    ],
-    "directives": []
-  }
-}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-exports/input.mjs b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-exports/input.mjs
new file mode 100644
index 000000000000..212c63290c2f
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-exports/input.mjs
@@ -0,0 +1 @@
+export fixture, { named } from "./fixture.json" assert { type: "json" }
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-exports/options.json b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-exports/options.json
new file mode 100644
index 000000000000..44ff060e42a7
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-exports/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["importAssertions", "exportDefaultFrom"],
+  "sourceType": "module"
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-exports/output.json b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-exports/output.json
new file mode 100644
index 000000000000..db2af548e9f8
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-exports/output.json
@@ -0,0 +1,75 @@
+{
+  "type": "File",
+  "start":0,"end":71,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":71,"index":71}},
+  "errors": [
+    "SyntaxError: A JSON module can only be imported with `default`. (1:18)"
+  ],
+  "program": {
+    "type": "Program",
+    "start":0,"end":71,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":71,"index":71}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ExportNamedDeclaration",
+        "start":0,"end":71,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":71,"index":71}},
+        "specifiers": [
+          {
+            "type": "ExportDefaultSpecifier",
+            "start":7,"end":14,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":14,"index":14}},
+            "exported": {
+              "type": "Identifier",
+              "start":7,"end":14,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":14,"index":14},"identifierName":"fixture"},
+              "name": "fixture"
+            }
+          },
+          {
+            "type": "ExportSpecifier",
+            "start":18,"end":23,"loc":{"start":{"line":1,"column":18,"index":18},"end":{"line":1,"column":23,"index":23}},
+            "local": {
+              "type": "Identifier",
+              "start":18,"end":23,"loc":{"start":{"line":1,"column":18,"index":18},"end":{"line":1,"column":23,"index":23},"identifierName":"named"},
+              "name": "named"
+            },
+            "exported": {
+              "type": "Identifier",
+              "start":18,"end":23,"loc":{"start":{"line":1,"column":18,"index":18},"end":{"line":1,"column":23,"index":23},"identifierName":"named"},
+              "name": "named"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":31,"end":47,"loc":{"start":{"line":1,"column":31,"index":31},"end":{"line":1,"column":47,"index":47}},
+          "extra": {
+            "rawValue": "./fixture.json",
+            "raw": "\"./fixture.json\""
+          },
+          "value": "./fixture.json"
+        },
+        "declaration": null,
+        "assertions": [
+          {
+            "type": "ImportAttribute",
+            "start":57,"end":69,"loc":{"start":{"line":1,"column":57,"index":57},"end":{"line":1,"column":69,"index":69}},
+            "key": {
+              "type": "Identifier",
+              "start":57,"end":61,"loc":{"start":{"line":1,"column":57,"index":57},"end":{"line":1,"column":61,"index":61},"identifierName":"type"},
+              "name": "type"
+            },
+            "value": {
+              "type": "StringLiteral",
+              "start":63,"end":69,"loc":{"start":{"line":1,"column":63,"index":63},"end":{"line":1,"column":69,"index":69}},
+              "extra": {
+                "rawValue": "json",
+                "raw": "\"json\""
+              },
+              "value": "json"
+            }
+          }
+        ]
+      }
+    ],
+    "directives": []
+  }
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-imports/input.mjs b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-imports/input.mjs
new file mode 100644
index 000000000000..223108f2b18c
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-imports/input.mjs
@@ -0,0 +1 @@
+import fixture, { named } from "./fixture.json" assert { type: "json" }
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-imports/output.json b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-imports/output.json
new file mode 100644
index 000000000000..c249ab738bcf
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-default-and-named-imports/output.json
@@ -0,0 +1,74 @@
+{
+  "type": "File",
+  "start":0,"end":71,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":71,"index":71}},
+  "errors": [
+    "SyntaxError: A JSON module can only be imported with `default`. (1:18)"
+  ],
+  "program": {
+    "type": "Program",
+    "start":0,"end":71,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":71,"index":71}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":71,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":71,"index":71}},
+        "specifiers": [
+          {
+            "type": "ImportDefaultSpecifier",
+            "start":7,"end":14,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":14,"index":14}},
+            "local": {
+              "type": "Identifier",
+              "start":7,"end":14,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":14,"index":14},"identifierName":"fixture"},
+              "name": "fixture"
+            }
+          },
+          {
+            "type": "ImportSpecifier",
+            "start":18,"end":23,"loc":{"start":{"line":1,"column":18,"index":18},"end":{"line":1,"column":23,"index":23}},
+            "imported": {
+              "type": "Identifier",
+              "start":18,"end":23,"loc":{"start":{"line":1,"column":18,"index":18},"end":{"line":1,"column":23,"index":23},"identifierName":"named"},
+              "name": "named"
+            },
+            "local": {
+              "type": "Identifier",
+              "start":18,"end":23,"loc":{"start":{"line":1,"column":18,"index":18},"end":{"line":1,"column":23,"index":23},"identifierName":"named"},
+              "name": "named"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":31,"end":47,"loc":{"start":{"line":1,"column":31,"index":31},"end":{"line":1,"column":47,"index":47}},
+          "extra": {
+            "rawValue": "./fixture.json",
+            "raw": "\"./fixture.json\""
+          },
+          "value": "./fixture.json"
+        },
+        "assertions": [
+          {
+            "type": "ImportAttribute",
+            "start":57,"end":69,"loc":{"start":{"line":1,"column":57,"index":57},"end":{"line":1,"column":69,"index":69}},
+            "key": {
+              "type": "Identifier",
+              "start":57,"end":61,"loc":{"start":{"line":1,"column":57,"index":57},"end":{"line":1,"column":61,"index":61},"identifierName":"type"},
+              "name": "type"
+            },
+            "value": {
+              "type": "StringLiteral",
+              "start":63,"end":69,"loc":{"start":{"line":1,"column":63,"index":63},"end":{"line":1,"column":69,"index":69}},
+              "extra": {
+                "rawValue": "json",
+                "raw": "\"json\""
+              },
+              "value": "json"
+            }
+          }
+        ]
+      }
+    ],
+    "directives": []
+  }
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-exports/input.mjs b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-exports/input.mjs
new file mode 100644
index 000000000000..ef0a80587deb
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-exports/input.mjs
@@ -0,0 +1 @@
+export { named } from "./fixture.json" assert { type: "json" }
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-exports/output.json b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-exports/output.json
new file mode 100644
index 000000000000..0967435867ab
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-exports/output.json
@@ -0,0 +1,66 @@
+{
+  "type": "File",
+  "start":0,"end":62,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":62,"index":62}},
+  "errors": [
+    "SyntaxError: A JSON module can only be imported with `default`. (1:9)"
+  ],
+  "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": "ExportNamedDeclaration",
+        "start":0,"end":62,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":62,"index":62}},
+        "specifiers": [
+          {
+            "type": "ExportSpecifier",
+            "start":9,"end":14,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":14,"index":14}},
+            "local": {
+              "type": "Identifier",
+              "start":9,"end":14,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":14,"index":14},"identifierName":"named"},
+              "name": "named"
+            },
+            "exported": {
+              "type": "Identifier",
+              "start":9,"end":14,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":14,"index":14},"identifierName":"named"},
+              "name": "named"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":22,"end":38,"loc":{"start":{"line":1,"column":22,"index":22},"end":{"line":1,"column":38,"index":38}},
+          "extra": {
+            "rawValue": "./fixture.json",
+            "raw": "\"./fixture.json\""
+          },
+          "value": "./fixture.json"
+        },
+        "declaration": null,
+        "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": []
+  }
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-imports/input.mjs b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-imports/input.mjs
new file mode 100644
index 000000000000..3ad06d5ed81f
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-imports/input.mjs
@@ -0,0 +1 @@
+import { named } from "./fixture.json" assert { type: "json" }
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-imports/output.json b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-imports/output.json
new file mode 100644
index 000000000000..51eb315165af
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/invalid-named-imports/output.json
@@ -0,0 +1,65 @@
+{
+  "type": "File",
+  "start":0,"end":62,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":62,"index":62}},
+  "errors": [
+    "SyntaxError: A JSON module can only be imported with `default`. (1:9)"
+  ],
+  "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": "ImportSpecifier",
+            "start":9,"end":14,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":14,"index":14}},
+            "imported": {
+              "type": "Identifier",
+              "start":9,"end":14,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":14,"index":14},"identifierName":"named"},
+              "name": "named"
+            },
+            "local": {
+              "type": "Identifier",
+              "start":9,"end":14,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":14,"index":14},"identifierName":"named"},
+              "name": "named"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":22,"end":38,"loc":{"start":{"line":1,"column":22,"index":22},"end":{"line":1,"column":38,"index":38}},
+          "extra": {
+            "rawValue": "./fixture.json",
+            "raw": "\"./fixture.json\""
+          },
+          "value": "./fixture.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": []
+  }
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/options.json b/packages/babel-parser/test/fixtures/experimental/json-modules/options.json
new file mode 100644
index 000000000000..51a9e56a5cbd
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["importAssertions"],
+  "sourceType": "module"
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-all-exports/input.mjs b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-all-exports/input.mjs
new file mode 100644
index 000000000000..5ea10bff219d
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-all-exports/input.mjs
@@ -0,0 +1 @@
+export * from "./fixture.json" assert { type: "json" }
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-all-exports/output.json b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-all-exports/output.json
new file mode 100644
index 000000000000..ef41ee07b33c
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-all-exports/output.json
@@ -0,0 +1,46 @@
+{
+  "type": "File",
+  "start":0,"end":54,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":54,"index":54}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":54,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":54,"index":54}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ExportAllDeclaration",
+        "start":0,"end":54,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":54,"index":54}},
+        "source": {
+          "type": "StringLiteral",
+          "start":14,"end":30,"loc":{"start":{"line":1,"column":14,"index":14},"end":{"line":1,"column":30,"index":30}},
+          "extra": {
+            "rawValue": "./fixture.json",
+            "raw": "\"./fixture.json\""
+          },
+          "value": "./fixture.json"
+        },
+        "assertions": [
+          {
+            "type": "ImportAttribute",
+            "start":40,"end":52,"loc":{"start":{"line":1,"column":40,"index":40},"end":{"line":1,"column":52,"index":52}},
+            "key": {
+              "type": "Identifier",
+              "start":40,"end":44,"loc":{"start":{"line":1,"column":40,"index":40},"end":{"line":1,"column":44,"index":44},"identifierName":"type"},
+              "name": "type"
+            },
+            "value": {
+              "type": "StringLiteral",
+              "start":46,"end":52,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":52,"index":52}},
+              "extra": {
+                "rawValue": "json",
+                "raw": "\"json\""
+              },
+              "value": "json"
+            }
+          }
+        ]
+      }
+    ],
+    "directives": []
+  }
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-exports/input.mjs b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-exports/input.mjs
new file mode 100644
index 000000000000..ccd28c9af5c7
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-exports/input.mjs
@@ -0,0 +1 @@
+export fixture, * as ns from "./fixture.json" assert { type: "json" }
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-exports/options.json b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-exports/options.json
new file mode 100644
index 000000000000..44ff060e42a7
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-exports/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["importAssertions", "exportDefaultFrom"],
+  "sourceType": "module"
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-exports/output.json b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-exports/output.json
new file mode 100644
index 000000000000..f62519cc3122
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-exports/output.json
@@ -0,0 +1,66 @@
+{
+  "type": "File",
+  "start":0,"end":69,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":69,"index":69}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":69,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":69,"index":69}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ExportNamedDeclaration",
+        "start":0,"end":69,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":69,"index":69}},
+        "specifiers": [
+          {
+            "type": "ExportDefaultSpecifier",
+            "start":7,"end":14,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":14,"index":14}},
+            "exported": {
+              "type": "Identifier",
+              "start":7,"end":14,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":14,"index":14},"identifierName":"fixture"},
+              "name": "fixture"
+            }
+          },
+          {
+            "type": "ExportNamespaceSpecifier",
+            "start":16,"end":23,"loc":{"start":{"line":1,"column":16,"index":16},"end":{"line":1,"column":23,"index":23}},
+            "exported": {
+              "type": "Identifier",
+              "start":21,"end":23,"loc":{"start":{"line":1,"column":21,"index":21},"end":{"line":1,"column":23,"index":23},"identifierName":"ns"},
+              "name": "ns"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":29,"end":45,"loc":{"start":{"line":1,"column":29,"index":29},"end":{"line":1,"column":45,"index":45}},
+          "extra": {
+            "rawValue": "./fixture.json",
+            "raw": "\"./fixture.json\""
+          },
+          "value": "./fixture.json"
+        },
+        "assertions": [
+          {
+            "type": "ImportAttribute",
+            "start":55,"end":67,"loc":{"start":{"line":1,"column":55,"index":55},"end":{"line":1,"column":67,"index":67}},
+            "key": {
+              "type": "Identifier",
+              "start":55,"end":59,"loc":{"start":{"line":1,"column":55,"index":55},"end":{"line":1,"column":59,"index":59},"identifierName":"type"},
+              "name": "type"
+            },
+            "value": {
+              "type": "StringLiteral",
+              "start":61,"end":67,"loc":{"start":{"line":1,"column":61,"index":61},"end":{"line":1,"column":67,"index":67}},
+              "extra": {
+                "rawValue": "json",
+                "raw": "\"json\""
+              },
+              "value": "json"
+            }
+          }
+        ]
+      }
+    ],
+    "directives": []
+  }
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-imports/input.mjs b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-imports/input.mjs
new file mode 100644
index 000000000000..59eb81f48a18
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-imports/input.mjs
@@ -0,0 +1 @@
+import fixture, * as ns from "./fixture.json" assert { type: "json" }
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-imports/output.json b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-imports/output.json
new file mode 100644
index 000000000000..c3b74bde7926
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-default-and-namespace-imports/output.json
@@ -0,0 +1,66 @@
+{
+  "type": "File",
+  "start":0,"end":69,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":69,"index":69}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":69,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":69,"index":69}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":69,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":69,"index":69}},
+        "specifiers": [
+          {
+            "type": "ImportDefaultSpecifier",
+            "start":7,"end":14,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":14,"index":14}},
+            "local": {
+              "type": "Identifier",
+              "start":7,"end":14,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":14,"index":14},"identifierName":"fixture"},
+              "name": "fixture"
+            }
+          },
+          {
+            "type": "ImportNamespaceSpecifier",
+            "start":16,"end":23,"loc":{"start":{"line":1,"column":16,"index":16},"end":{"line":1,"column":23,"index":23}},
+            "local": {
+              "type": "Identifier",
+              "start":21,"end":23,"loc":{"start":{"line":1,"column":21,"index":21},"end":{"line":1,"column":23,"index":23},"identifierName":"ns"},
+              "name": "ns"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":29,"end":45,"loc":{"start":{"line":1,"column":29,"index":29},"end":{"line":1,"column":45,"index":45}},
+          "extra": {
+            "rawValue": "./fixture.json",
+            "raw": "\"./fixture.json\""
+          },
+          "value": "./fixture.json"
+        },
+        "assertions": [
+          {
+            "type": "ImportAttribute",
+            "start":55,"end":67,"loc":{"start":{"line":1,"column":55,"index":55},"end":{"line":1,"column":67,"index":67}},
+            "key": {
+              "type": "Identifier",
+              "start":55,"end":59,"loc":{"start":{"line":1,"column":55,"index":55},"end":{"line":1,"column":59,"index":59},"identifierName":"type"},
+              "name": "type"
+            },
+            "value": {
+              "type": "StringLiteral",
+              "start":61,"end":67,"loc":{"start":{"line":1,"column":61,"index":61},"end":{"line":1,"column":67,"index":67}},
+              "extra": {
+                "rawValue": "json",
+                "raw": "\"json\""
+              },
+              "value": "json"
+            }
+          }
+        ]
+      }
+    ],
+    "directives": []
+  }
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-exports/input.mjs b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-exports/input.mjs
new file mode 100644
index 000000000000..b687807d35b8
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-exports/input.mjs
@@ -0,0 +1 @@
+export * as ns from "./fixture.json" assert { type: "json" }
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-exports/output.json b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-exports/output.json
new file mode 100644
index 000000000000..8d6700a299cc
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-exports/output.json
@@ -0,0 +1,57 @@
+{
+  "type": "File",
+  "start":0,"end":60,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":60,"index":60}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":60,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":60,"index":60}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ExportNamedDeclaration",
+        "start":0,"end":60,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":60,"index":60}},
+        "specifiers": [
+          {
+            "type": "ExportNamespaceSpecifier",
+            "start":7,"end":14,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":14,"index":14}},
+            "exported": {
+              "type": "Identifier",
+              "start":12,"end":14,"loc":{"start":{"line":1,"column":12,"index":12},"end":{"line":1,"column":14,"index":14},"identifierName":"ns"},
+              "name": "ns"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":20,"end":36,"loc":{"start":{"line":1,"column":20,"index":20},"end":{"line":1,"column":36,"index":36}},
+          "extra": {
+            "rawValue": "./fixture.json",
+            "raw": "\"./fixture.json\""
+          },
+          "value": "./fixture.json"
+        },
+        "assertions": [
+          {
+            "type": "ImportAttribute",
+            "start":46,"end":58,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":58,"index":58}},
+            "key": {
+              "type": "Identifier",
+              "start":46,"end":50,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":50,"index":50},"identifierName":"type"},
+              "name": "type"
+            },
+            "value": {
+              "type": "StringLiteral",
+              "start":52,"end":58,"loc":{"start":{"line":1,"column":52,"index":52},"end":{"line":1,"column":58,"index":58}},
+              "extra": {
+                "rawValue": "json",
+                "raw": "\"json\""
+              },
+              "value": "json"
+            }
+          }
+        ]
+      }
+    ],
+    "directives": []
+  }
+}
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-imports/input.mjs b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-imports/input.mjs
new file mode 100644
index 000000000000..24331874b0c9
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-imports/input.mjs
@@ -0,0 +1 @@
+import * as ns from "./fixture.json" assert { type: "json" }
diff --git a/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-imports/output.json b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-imports/output.json
new file mode 100644
index 000000000000..ea6e41eb2c15
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/experimental/json-modules/valid-namespace-imports/output.json
@@ -0,0 +1,57 @@
+{
+  "type": "File",
+  "start":0,"end":60,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":60,"index":60}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":60,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":60,"index":60}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":60,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":60,"index":60}},
+        "specifiers": [
+          {
+            "type": "ImportNamespaceSpecifier",
+            "start":7,"end":14,"loc":{"start":{"line":1,"column":7,"index":7},"end":{"line":1,"column":14,"index":14}},
+            "local": {
+              "type": "Identifier",
+              "start":12,"end":14,"loc":{"start":{"line":1,"column":12,"index":12},"end":{"line":1,"column":14,"index":14},"identifierName":"ns"},
+              "name": "ns"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":20,"end":36,"loc":{"start":{"line":1,"column":20,"index":20},"end":{"line":1,"column":36,"index":36}},
+          "extra": {
+            "rawValue": "./fixture.json",
+            "raw": "\"./fixture.json\""
+          },
+          "value": "./fixture.json"
+        },
+        "assertions": [
+          {
+            "type": "ImportAttribute",
+            "start":46,"end":58,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":58,"index":58}},
+            "key": {
+              "type": "Identifier",
+              "start":46,"end":50,"loc":{"start":{"line":1,"column":46,"index":46},"end":{"line":1,"column":50,"index":50},"identifierName":"type"},
+              "name": "type"
+            },
+            "value": {
+              "type": "StringLiteral",
+              "start":52,"end":58,"loc":{"start":{"line":1,"column":52,"index":52},"end":{"line":1,"column":58,"index":58}},
+              "extra": {
+                "rawValue": "json",
+                "raw": "\"json\""
+              },
+              "value": "json"
+            }
+          }
+        ]
+      }
+    ],
+    "directives": []
+  }
+}
diff --git a/packages/babel-preset-env/test/fixtures/shipped-proposals/import-assertions/input.mjs b/packages/babel-preset-env/test/fixtures/shipped-proposals/import-assertions/input.mjs
index 436061f3afdb..9f63fa2fdab9 100644
--- a/packages/babel-preset-env/test/fixtures/shipped-proposals/import-assertions/input.mjs
+++ b/packages/babel-preset-env/test/fixtures/shipped-proposals/import-assertions/input.mjs
@@ -1 +1 @@
-import { version } from "./package.json" assert { type: "json" }
+import packageJson from "./package.json" assert { type: "json" }
diff --git a/packages/babel-preset-env/test/fixtures/shipped-proposals/import-assertions/output.js b/packages/babel-preset-env/test/fixtures/shipped-proposals/import-assertions/output.js
index 0a0ea4fde67c..bcee0b0e767a 100644
--- a/packages/babel-preset-env/test/fixtures/shipped-proposals/import-assertions/output.js
+++ b/packages/babel-preset-env/test/fixtures/shipped-proposals/import-assertions/output.js
@@ -1,3 +1,3 @@
 "use strict";
 
-var _package = require("./package.json");
+var _package = babelHelpers.interopRequireDefault(require("./package.json"));
diff --git a/packages/babel-template/test/index.js b/packages/babel-template/test/index.js
index 4a7f97b164c1..dcb77b38539e 100644
--- a/packages/babel-template/test/index.js
+++ b/packages/babel-template/test/index.js
@@ -231,7 +231,7 @@ describe("@babel/template", function () {
 
     it("should return assertions in ExportNamedDeclaration when using .ast", () => {
       const result = template.ast(
-        `export { foo2 } from "foo.json" assert { type: "json" };`,
+        `export { default as foo2 } from "foo.json" assert { type: "json" };`,
         {
           plugins: ["importAssertions"],
         },
diff --git a/scripts/parser-tests/test262/allowlist.txt b/scripts/parser-tests/test262/allowlist.txt
index 8d3adcaa48fa..f2ad1620f3d6 100644
--- a/scripts/parser-tests/test262/allowlist.txt
+++ b/scripts/parser-tests/test262/allowlist.txt
@@ -4,8 +4,6 @@ language/expressions/class/decorator/syntax/valid/decorator-member-expr-decorato
 language/expressions/class/decorator/syntax/valid/decorator-member-expr-decorator-member-expr.js(strict mode)
 language/import/json-invalid.js(default)
 language/import/json-invalid.js(strict mode)
-language/import/json-named-bindings.js(default)
-language/import/json-named-bindings.js(strict mode)
 language/statements/class/decorator/syntax/class-valid/decorator-member-expr-private-identifier.js(default)
 language/statements/class/decorator/syntax/class-valid/decorator-member-expr-private-identifier.js(strict mode)
 language/statements/class/decorator/syntax/valid/decorator-member-expr-decorator-member-expr.js(default)