Support Import Attributes (#14863)

* Print import attributes

* Update visitor keys for import attributes

* Update snapshots for visitor-keys

* Update `babel-plugins` tests

* Update import attributes tests

* Update misc tests

* Add changelog

* Enable `importAttributes` and `importAssertions`

* Print ImportAssertion syntax

* Add `babel-plugins` tests

* Add import assertions tests

* Add misc tests for import assertions

* Update changelog

* Fix words

* Use `deprecatedAssertSyntax`

* Update `@babel/parser`

* Use deprecatedAssertSyntax

* Remove needless tests

* Update `@babel/types`

* Update visitor-keys

* Run `yarn dedupe`

* Update src/language-js/print/module.js

Co-authored-by: Nicolò Ribaudo <hello@nicr.dev>

* Address review

---------

Co-authored-by: Nicolò Ribaudo <hello@nicr.dev>

changelog_unreleased/javascript/14863.md

@@ -0,0 +1,9 @@
+#### Support Import Attributes (#14861, #14863 by @sosukesuzuki)
+
+Support [Import Attributes](https://github.com/tc39/proposal-import-attributes) proposal.
+
+<!-- prettier-ignore -->
+```jsx
+import json from "./foo.json" with { type: "json" };
+import("./foo.json", { with: { type: "json" } });
+```

package.json

@@ -32,8 +32,8 @@
   "dependencies": {
     "@angular/compiler": "16.0.3",
     "@babel/code-frame": "7.21.4",
-    "@babel/parser": "7.22.3",
+    "@babel/parser": "7.22.4",
-    "@babel/types": "7.22.3",
+    "@babel/types": "7.22.4",
     "@glimmer/syntax": "0.84.3",
     "@iarna/toml": "2.2.5",
     "@prettier/is-es5-identifier-name": "0.1.0",

src/language-js/parse/babel.js

@@ -36,7 +36,6 @@ const parseOptions = {
     "throwExpressions",
     "partialApplication",
     "decorators",
-    "importAssertions",
     "decimal",
     "moduleBlocks",
     "asyncDoExpressions",
@@ -45,6 +44,7 @@ const parseOptions = {
     "decoratorAutoAccessors",
     "importReflection",
     "explicitResourceManagement",
+    ["importAttributes", { deprecatedAssertSyntax: true }],
   ],
   tokens: true,
   ranges: true,
@@ -62,6 +62,7 @@ const pipelineOperatorPlugins = [
   ["pipelineOperator", { proposal: "minimal" }],
   ["pipelineOperator", { proposal: "fsharp" }],
 ];
+
 const appendPlugins = (plugins, options = parseOptions) => ({
   ...options,
   plugins: [...options.plugins, ...plugins],

src/language-js/print/module.js

@@ -37,7 +37,7 @@ function printImportDeclaration(path, options, print) {
     printImportKind(node),
     printModuleSpecifiers(path, options, print),
     printModuleSource(path, options, print),
-    printImportAssertions(path, options, print),
+    printImportAttributes(path, options, print),
     options.semi ? ";" : "",
   ];
 }
@@ -93,7 +93,7 @@ function printExportDeclaration(path, options, print) {
 
     parts.push(
       printModuleSource(path, options, print),
-      printImportAssertions(path, options, print)
+      printImportAttributes(path, options, print)
     );
   }
 
@@ -246,16 +246,31 @@ function shouldNotPrintSpecifiers(node, options) {
   );
 }
 
-function printImportAssertions(path, options, print) {
+/**
+ * Print Import Attributes syntax.
+ * If old ImportAssertions syntax is used, print them here.
+ */
+function printImportAttributes(path, options, print) {
   const { node } = path;
-  if (!isNonEmptyArray(node.assertions)) {
+
+  const property = isNonEmptyArray(node.attributes)
+    ? "attributes"
+    : isNonEmptyArray(node.assertions)
+    ? "assertions"
+    : undefined;
+
+  if (!property) {
     return "";
   }
 
+  const keyword =
+    property === "assertions" || node.extra?.deprecatedAssertSyntax
+      ? "assert"
+      : "with";
   return [
-    " assert {",
+    ` ${keyword} {`,
     options.bracketSpacing ? " " : "",
-    join(", ", path.map(print, "assertions")),
+    join(", ", path.map(print, property)),
     options.bracketSpacing ? " " : "",
     "}",
   ];

tests/format/js/babel-plugins/__snapshots__/jsfmt.spec.js.snap

@@ -1239,6 +1239,76 @@ import json from "./foo.json" assert { type: "json" };
 ================================================================================
 `;
 
+exports[`import-attributes-dynamic.js [acorn] format 1`] = `
+"Unexpected token (1:20)
+> 1 | import("./foo.json", { with: { type: "json" } });
+    |                    ^
+  2 |"
+`;
+
+exports[`import-attributes-dynamic.js [espree] format 1`] = `
+"Unexpected token , (1:20)
+> 1 | import("./foo.json", { with: { type: "json" } });
+    |                    ^
+  2 |"
+`;
+
+exports[`import-attributes-dynamic.js [meriyah] format 1`] = `
+"Expected ')' (1:20)
+> 1 | import("./foo.json", { with: { type: "json" } });
+    |                    ^
+  2 |"
+`;
+
+exports[`import-attributes-dynamic.js format 1`] = `
+====================================options=====================================
+parsers: ["babel", "babel-ts", "babel-flow"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+import("./foo.json", { with: { type: "json" } });
+
+=====================================output=====================================
+import("./foo.json", { with: { type: "json" } });
+
+================================================================================
+`;
+
+exports[`import-attributes-static.js [acorn] format 1`] = `
+"Unexpected token (1:31)
+> 1 | import json from "./foo.json" with { type: "json" };
+    |                               ^
+  2 |"
+`;
+
+exports[`import-attributes-static.js [espree] format 1`] = `
+"Unexpected token with (1:31)
+> 1 | import json from "./foo.json" with { type: "json" };
+    |                               ^
+  2 |"
+`;
+
+exports[`import-attributes-static.js [meriyah] format 1`] = `
+"Unexpected token: 'with' (1:34)
+> 1 | import json from "./foo.json" with { type: "json" };
+    |                                  ^
+  2 |"
+`;
+
+exports[`import-attributes-static.js format 1`] = `
+====================================options=====================================
+parsers: ["babel", "babel-ts", "babel-flow"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+import json from "./foo.json" with { type: "json" };
+
+=====================================output=====================================
+import json from "./foo.json" with { type: "json" };
+
+================================================================================
+`;
+
 exports[`import-meta.js format 1`] = `
 ====================================options=====================================
 parsers: ["babel", "babel-ts", "babel-flow"]

tests/format/js/babel-plugins/import-attributes-dynamic.js

@@ -0,0 +1 @@
+import("./foo.json", { with: { type: "json" } });

tests/format/js/babel-plugins/import-attributes-static.js

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

tests/format/js/babel-plugins/jsfmt.spec.js

@@ -14,6 +14,8 @@ run_spec(import.meta, ["babel", "babel-ts", "babel-flow"], {
       "function-sent.js",
       "import-assertions-dynamic.js",
       "import-assertions-static.js",
+      "import-attributes-dynamic.js",
+      "import-attributes-static.js",
       "partial-application.js",
       "pipeline-operator-fsharp.js",
       "pipeline-operator-minimal.js",
@@ -42,6 +44,8 @@ run_spec(import.meta, ["babel", "babel-ts", "babel-flow"], {
       "function-sent.js",
       "import-assertions-dynamic.js",
       "import-assertions-static.js",
+      "import-attributes-dynamic.js",
+      "import-attributes-static.js",
       "partial-application.js",
       "pipeline-operator-fsharp.js",
       "pipeline-operator-minimal.js",
@@ -80,6 +84,8 @@ run_spec(import.meta, ["babel", "babel-ts", "babel-flow"], {
       "v8intrinsic.js",
       "import-assertions-dynamic.js",
       "import-assertions-static.js",
+      "import-attributes-dynamic.js",
+      "import-attributes-static.js",
       "module-string-names.js",
       "module-blocks.js",
       "async-do-expressions.js",

tests/format/js/import-attributes/__snapshots__/jsfmt.spec.js.snap

@@ -0,0 +1,324 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`dynamic-import.js [acorn] format 1`] = `
+"Unexpected token (1:20)
+> 1 | import("./foo.json", { with: { type: "json" } });
+    |                    ^
+  2 |"
+`;
+
+exports[`dynamic-import.js [espree] format 1`] = `
+"Unexpected token , (1:20)
+> 1 | import("./foo.json", { with: { type: "json" } });
+    |                    ^
+  2 |"
+`;
+
+exports[`dynamic-import.js [meriyah] format 1`] = `
+"Expected ')' (1:20)
+> 1 | import("./foo.json", { with: { type: "json" } });
+    |                    ^
+  2 |"
+`;
+
+exports[`dynamic-import.js format 1`] = `
+====================================options=====================================
+parsers: ["babel", "typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+import("./foo.json", { with: { type: "json" } });
+
+=====================================output=====================================
+import("./foo.json", { with: { type: "json" } });
+
+================================================================================
+`;
+
+exports[`empty.js [acorn] format 1`] = `
+"Unexpected token (2:33)
+  1 | export * as foo from "foo.json"
+> 2 | export * as bar from "bar.json" with { }
+    |                                 ^
+  3 | export * as baz from "baz.json" with { /* comment */ }
+  4 |
+  5 | import * as foo from "foo.json""
+`;
+
+exports[`empty.js [espree] format 1`] = `
+"Unexpected token with (2:33)
+  1 | export * as foo from "foo.json"
+> 2 | export * as bar from "bar.json" with { }
+    |                                 ^
+  3 | export * as baz from "baz.json" with { /* comment */ }
+  4 |
+  5 | import * as foo from "foo.json""
+`;
+
+exports[`empty.js [meriyah] format 1`] = `
+"Unexpected token: 'with' (2:36)
+  1 | export * as foo from "foo.json"
+> 2 | export * as bar from "bar.json" with { }
+    |                                    ^
+  3 | export * as baz from "baz.json" with { /* comment */ }
+  4 |
+  5 | import * as foo from "foo.json""
+`;
+
+exports[`empty.js [typescript] format 1`] = `
+"';' expected. (2:33)
+  1 | export * as foo from "foo.json"
+> 2 | export * as bar from "bar.json" with { }
+    |                                 ^
+  3 | export * as baz from "baz.json" with { /* comment */ }
+  4 |
+  5 | import * as foo from "foo.json""
+`;
+
+exports[`empty.js format 1`] = `
+====================================options=====================================
+parsers: ["babel", "typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+export * as foo from "foo.json"
+export * as bar from "bar.json" with { }
+export * as baz from "baz.json" with { /* comment */ }
+
+import * as foo from "foo.json"
+import * as bar from "bar.json" with { }
+import * as baz from "baz.json" with { /* comment */ }
+
+=====================================output=====================================
+export * as foo from "foo.json";
+export * as bar from "bar.json";
+export * as baz from "baz.json" /* comment */;
+
+import * as foo from "foo.json";
+import * as bar from "bar.json";
+import * as baz from "baz.json" /* comment */;
+
+================================================================================
+`;
+
+exports[`multi-types.js [acorn] format 1`] = `
+"Unexpected token (1:31)
+> 1 | import json from "./foo.json" with { type: "json", type: "bar" };
+    |                               ^
+  2 |"
+`;
+
+exports[`multi-types.js [espree] format 1`] = `
+"Unexpected token with (1:31)
+> 1 | import json from "./foo.json" with { type: "json", type: "bar" };
+    |                               ^
+  2 |"
+`;
+
+exports[`multi-types.js [meriyah] format 1`] = `
+"Unexpected token: 'with' (1:34)
+> 1 | import json from "./foo.json" with { type: "json", type: "bar" };
+    |                                  ^
+  2 |"
+`;
+
+exports[`multi-types.js [typescript] format 1`] = `
+"';' expected. (1:31)
+> 1 | import json from "./foo.json" with { type: "json", type: "bar" };
+    |                               ^
+  2 |"
+`;
+
+exports[`multi-types.js format 1`] = `
+====================================options=====================================
+parsers: ["babel", "typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+import json from "./foo.json" with { type: "json", type: "bar" };
+
+=====================================output=====================================
+import json from "./foo.json" with { type: "json", type: "bar" };
+
+================================================================================
+`;
+
+exports[`non-type.js [acorn] format 1`] = `
+"Unexpected token (1:28)
+> 1 | import foo from "foo.json" with { lazy: "true" };
+    |                            ^
+  2 |"
+`;
+
+exports[`non-type.js [espree] format 1`] = `
+"Unexpected token with (1:28)
+> 1 | import foo from "foo.json" with { lazy: "true" };
+    |                            ^
+  2 |"
+`;
+
+exports[`non-type.js [meriyah] format 1`] = `
+"Unexpected token: 'with' (1:31)
+> 1 | import foo from "foo.json" with { lazy: "true" };
+    |                               ^
+  2 |"
+`;
+
+exports[`non-type.js [typescript] format 1`] = `
+"';' expected. (1:28)
+> 1 | import foo from "foo.json" with { lazy: "true" };
+    |                            ^
+  2 |"
+`;
+
+exports[`non-type.js format 1`] = `
+====================================options=====================================
+parsers: ["babel", "typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+import foo from "foo.json" with { lazy: "true" };
+
+=====================================output=====================================
+import foo from "foo.json" with { lazy: "true" };
+
+================================================================================
+`;
+
+exports[`re-export.js [acorn] format 1`] = `
+"Unexpected token (1:44)
+> 1 | export { default as foo2 } from "foo.json" with { type: "json" };
+    |                                            ^
+  2 | export * from "foo.json" with { type: "json" };
+  3 | export * as foo3 from "foo.json" with { type: "json" };
+  4 |"
+`;
+
+exports[`re-export.js [espree] format 1`] = `
+"Unexpected token with (1:44)
+> 1 | export { default as foo2 } from "foo.json" with { type: "json" };
+    |                                            ^
+  2 | export * from "foo.json" with { type: "json" };
+  3 | export * as foo3 from "foo.json" with { type: "json" };
+  4 |"
+`;
+
+exports[`re-export.js [meriyah] format 1`] = `
+"Unexpected token: 'with' (1:47)
+> 1 | export { default as foo2 } from "foo.json" with { type: "json" };
+    |                                               ^
+  2 | export * from "foo.json" with { type: "json" };
+  3 | export * as foo3 from "foo.json" with { type: "json" };
+  4 |"
+`;
+
+exports[`re-export.js [typescript] format 1`] = `
+"';' expected. (1:44)
+> 1 | export { default as foo2 } from "foo.json" with { type: "json" };
+    |                                            ^
+  2 | export * from "foo.json" with { type: "json" };
+  3 | export * as foo3 from "foo.json" with { type: "json" };
+  4 |"
+`;
+
+exports[`re-export.js format 1`] = `
+====================================options=====================================
+parsers: ["babel", "typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+export { default as foo2 } from "foo.json" with { type: "json" };
+export * from "foo.json" with { type: "json" };
+export * as foo3 from "foo.json" with { type: "json" };
+
+=====================================output=====================================
+export { default as foo2 } from "foo.json" with { type: "json" };
+export * from "foo.json" with { type: "json" };
+export * as foo3 from "foo.json" with { type: "json" };
+
+================================================================================
+`;
+
+exports[`static-import.js [acorn] format 1`] = `
+"Unexpected token (1:31)
+> 1 | import json from "./foo.json" with { type: "json" };
+    |                               ^
+  2 |"
+`;
+
+exports[`static-import.js [espree] format 1`] = `
+"Unexpected token with (1:31)
+> 1 | import json from "./foo.json" with { type: "json" };
+    |                               ^
+  2 |"
+`;
+
+exports[`static-import.js [meriyah] format 1`] = `
+"Unexpected token: 'with' (1:34)
+> 1 | import json from "./foo.json" with { type: "json" };
+    |                                  ^
+  2 |"
+`;
+
+exports[`static-import.js [typescript] format 1`] = `
+"';' expected. (1:31)
+> 1 | import json from "./foo.json" with { type: "json" };
+    |                               ^
+  2 |"
+`;
+
+exports[`static-import.js format 1`] = `
+====================================options=====================================
+parsers: ["babel", "typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+import json from "./foo.json" with { type: "json" };
+
+=====================================output=====================================
+import json from "./foo.json" with { type: "json" };
+
+================================================================================
+`;
+
+exports[`without-from.js [acorn] format 1`] = `
+"Unexpected token (1:14)
+> 1 | import "foo" with { type: "json" }
+    |              ^
+  2 |"
+`;
+
+exports[`without-from.js [espree] format 1`] = `
+"Unexpected token with (1:14)
+> 1 | import "foo" with { type: "json" }
+    |              ^
+  2 |"
+`;
+
+exports[`without-from.js [meriyah] format 1`] = `
+"Unexpected token: 'with' (1:17)
+> 1 | import "foo" with { type: "json" }
+    |                 ^
+  2 |"
+`;
+
+exports[`without-from.js [typescript] format 1`] = `
+"';' expected. (1:14)
+> 1 | import "foo" with { type: "json" }
+    |              ^
+  2 |"
+`;
+
+exports[`without-from.js format 1`] = `
+====================================options=====================================
+parsers: ["babel", "typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+import "foo" with { type: "json" }
+
+=====================================output=====================================
+import "foo" with { type: "json" };
+
+================================================================================
+`;

tests/format/js/import-attributes/bracket-spacing/__snapshots__/jsfmt.spec.js.snap

@@ -0,0 +1,141 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`dynamic-import.js - {"bracketSpacing":false} [acorn] format 1`] = `
+"Unexpected token (1:20)
+> 1 | import("./foo.json", { with: { type: "json" } });
+    |                    ^
+  2 |"
+`;
+
+exports[`dynamic-import.js - {"bracketSpacing":false} [espree] format 1`] = `
+"Unexpected token , (1:20)
+> 1 | import("./foo.json", { with: { type: "json" } });
+    |                    ^
+  2 |"
+`;
+
+exports[`dynamic-import.js - {"bracketSpacing":false} [meriyah] format 1`] = `
+"Expected ')' (1:20)
+> 1 | import("./foo.json", { with: { type: "json" } });
+    |                    ^
+  2 |"
+`;
+
+exports[`dynamic-import.js - {"bracketSpacing":false} format 1`] = `
+====================================options=====================================
+bracketSpacing: false
+parsers: ["babel"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+import("./foo.json", { with: { type: "json" } });
+
+=====================================output=====================================
+import("./foo.json", {with: {type: "json"}});
+
+================================================================================
+`;
+
+exports[`empty.js - {"bracketSpacing":false} [acorn] format 1`] = `
+"Unexpected token (1:33)
+> 1 | export * as bar from "bar.json" with { }
+    |                                 ^"
+`;
+
+exports[`empty.js - {"bracketSpacing":false} [espree] format 1`] = `
+"Unexpected token with (1:33)
+> 1 | export * as bar from "bar.json" with { }
+    |                                 ^"
+`;
+
+exports[`empty.js - {"bracketSpacing":false} [meriyah] format 1`] = `
+"Unexpected token: 'with' (1:36)
+> 1 | export * as bar from "bar.json" with { }
+    |                                    ^"
+`;
+
+exports[`empty.js - {"bracketSpacing":false} format 1`] = `
+====================================options=====================================
+bracketSpacing: false
+parsers: ["babel"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+export * as bar from "bar.json" with { }
+=====================================output=====================================
+export * as bar from "bar.json";
+
+================================================================================
+`;
+
+exports[`re-export.js - {"bracketSpacing":false} [acorn] format 1`] = `
+"Unexpected token (1:44)
+> 1 | export { default as foo2 } from "foo.json" with { type: "json" };
+    |                                            ^
+  2 |"
+`;
+
+exports[`re-export.js - {"bracketSpacing":false} [espree] format 1`] = `
+"Unexpected token with (1:44)
+> 1 | export { default as foo2 } from "foo.json" with { type: "json" };
+    |                                            ^
+  2 |"
+`;
+
+exports[`re-export.js - {"bracketSpacing":false} [meriyah] format 1`] = `
+"Unexpected token: 'with' (1:47)
+> 1 | export { default as foo2 } from "foo.json" with { type: "json" };
+    |                                               ^
+  2 |"
+`;
+
+exports[`re-export.js - {"bracketSpacing":false} format 1`] = `
+====================================options=====================================
+bracketSpacing: false
+parsers: ["babel"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+export { default as foo2 } from "foo.json" with { type: "json" };
+
+=====================================output=====================================
+export {default as foo2} from "foo.json" with {type: "json"};
+
+================================================================================
+`;
+
+exports[`static-import.js - {"bracketSpacing":false} [acorn] format 1`] = `
+"Unexpected token (1:31)
+> 1 | import json from "./foo.json" with { type: "json" };
+    |                               ^
+  2 |"
+`;
+
+exports[`static-import.js - {"bracketSpacing":false} [espree] format 1`] = `
+"Unexpected token with (1:31)
+> 1 | import json from "./foo.json" with { type: "json" };
+    |                               ^
+  2 |"
+`;
+
+exports[`static-import.js - {"bracketSpacing":false} [meriyah] format 1`] = `
+"Unexpected token: 'with' (1:34)
+> 1 | import json from "./foo.json" with { type: "json" };
+    |                                  ^
+  2 |"
+`;
+
+exports[`static-import.js - {"bracketSpacing":false} format 1`] = `
+====================================options=====================================
+bracketSpacing: false
+parsers: ["babel"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+import json from "./foo.json" with { type: "json" };
+
+=====================================output=====================================
+import json from "./foo.json" with {type: "json"};
+
+================================================================================
+`;

tests/format/js/import-attributes/bracket-spacing/dynamic-import.js

@@ -0,0 +1 @@
+import("./foo.json", { with: { type: "json" } });

tests/format/js/import-attributes/bracket-spacing/empty.js

@@ -0,0 +1 @@
+export * as bar from "bar.json" with { }

tests/format/js/import-attributes/bracket-spacing/jsfmt.spec.js

@@ -0,0 +1,23 @@
+run_spec(import.meta, ["babel"], {
+  bracketSpacing: false,
+  errors: {
+    acorn: [
+      "dynamic-import.js",
+      "static-import.js",
+      "re-export.js",
+      "empty.js",
+    ],
+    espree: [
+      "dynamic-import.js",
+      "static-import.js",
+      "re-export.js",
+      "empty.js",
+    ],
+    meriyah: [
+      "dynamic-import.js",
+      "static-import.js",
+      "re-export.js",
+      "empty.js",
+    ],
+  },
+});

tests/format/js/import-attributes/bracket-spacing/re-export.js

@@ -0,0 +1 @@
+export { default as foo2 } from "foo.json" with { type: "json" };

tests/format/js/import-attributes/bracket-spacing/static-import.js

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

tests/format/js/import-attributes/dynamic-import.js

@@ -0,0 +1 @@
+import("./foo.json", { with: { type: "json" } });

tests/format/js/import-attributes/empty.js

@@ -0,0 +1,7 @@
+export * as foo from "foo.json"
+export * as bar from "bar.json" with { }
+export * as baz from "baz.json" with { /* comment */ }
+
+import * as foo from "foo.json"
+import * as bar from "bar.json" with { }
+import * as baz from "baz.json" with { /* comment */ }

tests/format/js/import-attributes/jsfmt.spec.js

@@ -0,0 +1,39 @@
+run_spec(import.meta, ["babel", "typescript"], {
+  errors: {
+    acorn: [
+      "dynamic-import.js",
+      "empty.js",
+      "multi-types.js",
+      "static-import.js",
+      "re-export.js",
+      "without-from.js",
+      "non-type.js",
+    ],
+    espree: [
+      "dynamic-import.js",
+      "empty.js",
+      "multi-types.js",
+      "static-import.js",
+      "re-export.js",
+      "without-from.js",
+      "non-type.js",
+    ],
+    meriyah: [
+      "dynamic-import.js",
+      "empty.js",
+      "multi-types.js",
+      "static-import.js",
+      "re-export.js",
+      "without-from.js",
+      "non-type.js",
+    ],
+    typescript: [
+      "empty.js",
+      "multi-types.js",
+      "static-import.js",
+      "re-export.js",
+      "without-from.js",
+      "non-type.js",
+    ],
+  },
+});

tests/format/js/import-attributes/multi-types.js

@@ -0,0 +1 @@
+import json from "./foo.json" with { type: "json", type: "bar" };

tests/format/js/import-attributes/non-type.js

@@ -0,0 +1 @@
+import foo from "foo.json" with { lazy: "true" };

tests/format/js/import-attributes/re-export.js

@@ -0,0 +1,3 @@
+export { default as foo2 } from "foo.json" with { type: "json" };
+export * from "foo.json" with { type: "json" };
+export * as foo3 from "foo.json" with { type: "json" };

tests/format/js/import-attributes/static-import.js

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

tests/format/js/import-attributes/without-from.js

@@ -0,0 +1 @@
+import "foo" with { type: "json" }

tests/format/misc/errors/js/__snapshots__/jsfmt.spec.js.snap

@@ -25,6 +25,20 @@ exports[`import-assertions-with-parens.js [babel] format 1`] = `
   2 |"
 `;
 
+exports[`import-attributes-for-export-without-from.js [babel] format 1`] = `
+"Unexpected token, expected "(" (1:32)
+> 1 | export { default as foo } with { type: "json" };
+    |                                ^
+  2 |"
+`;
+
+exports[`import-attributes-with-parens.js [babel] format 1`] = `
+"Unexpected token, expected "{" (1:17)
+> 1 | import "x" with ({type: 'json'});
+    |                 ^
+  2 |"
+`;
+
 exports[`invalid-escape-in-identifier.js [babel] format 1`] = `
 "Invalid Unicode escape. (1:7)
 > 1 | const \\u{20} = 1

tests/format/misc/errors/js/import-assertions/__snapshots__/jsfmt.spec.js.snap

@@ -1,12 +1,5 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`invalid-assertions.mjs [babel] format 1`] = `
-"\`import module x\` cannot have assertions. (1:15)
-> 1 | import module foo from "./module.json" assert { type: "json" }
-    |               ^
-  2 |"
-`;
-
 exports[`invalid-default-named-import.mjs [babel] format 1`] = `
 "Only \`import module x from "./module"\` is valid. (1:15)
 > 1 | import module foo, {bar} from "./module.wasm";

tests/format/misc/errors/js/import-assertions/invalid-assertions.mjs

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

tests/format/misc/errors/js/import-attributes-for-export-without-from.js

@@ -0,0 +1 @@
+export { default as foo } with { type: "json" };

tests/format/misc/errors/js/import-attributes-with-parens.js

@@ -0,0 +1 @@
+import "x" with ({type: 'json'});

tests/unit/__snapshots__/visitor-keys.js.snap

@@ -263,8 +263,9 @@ exports[`visitor keys estree 1`] = `
   ],
   "ExportAllDeclaration": [
     "source",
-    "exported",
+    "attributes",
     "assertions",
+    "exported",
   ],
   "ExportDefaultDeclaration": [
     "declaration",
@@ -276,6 +277,7 @@ exports[`visitor keys estree 1`] = `
     "declaration",
     "specifiers",
     "source",
+    "attributes",
     "assertions",
   ],
   "ExportNamespaceSpecifier": [
@@ -354,6 +356,7 @@ exports[`visitor keys estree 1`] = `
   "ImportDeclaration": [
     "specifiers",
     "source",
+    "attributes",
     "assertions",
   ],
   "ImportDefaultSpecifier": [

yarn.lock

@@ -230,12 +230,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@babel/parser@npm:7.22.3, @babel/parser@npm:^7.1.0, @babel/parser@npm:^7.14.7, @babel/parser@npm:^7.20.7, @babel/parser@npm:^7.21.5, @babel/parser@npm:^7.21.8":
+"@babel/parser@npm:7.22.4, @babel/parser@npm:^7.1.0, @babel/parser@npm:^7.14.7, @babel/parser@npm:^7.20.7, @babel/parser@npm:^7.21.5, @babel/parser@npm:^7.21.8":
-  version: 7.22.3
+  version: 7.22.4
-  resolution: "@babel/parser@npm:7.22.3"
+  resolution: "@babel/parser@npm:7.22.4"
   bin:
     parser: ./bin/babel-parser.js
-  checksum: 016f2960212fd86817e15d90b9b3450d2b51af189b1c17a20ade5735d9ec69e76e29def317e09188ecd5fa6eab4f9ab72d88b8b829c1b2994400a6a2c2dc1958
+  checksum: 0ca6d3a2d9aae2504ba1bc494704b64a83140884f7379f609de69bd39b60adb58a4f8ec692fe53fef8657dd82705d01b7e6efb65e18296326bdd66f71d52d9a9
   languageName: node
   linkType: hard
 
@@ -422,14 +422,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@babel/types@npm:7.22.3, @babel/types@npm:^7.0.0, @babel/types@npm:^7.18.6, @babel/types@npm:^7.20.7, @babel/types@npm:^7.21.0, @babel/types@npm:^7.21.4, @babel/types@npm:^7.21.5, @babel/types@npm:^7.22.3, @babel/types@npm:^7.3.0, @babel/types@npm:^7.3.3, @babel/types@npm:^7.8.3":
+"@babel/types@npm:7.22.4, @babel/types@npm:^7.0.0, @babel/types@npm:^7.18.6, @babel/types@npm:^7.20.7, @babel/types@npm:^7.21.0, @babel/types@npm:^7.21.4, @babel/types@npm:^7.21.5, @babel/types@npm:^7.22.3, @babel/types@npm:^7.3.0, @babel/types@npm:^7.3.3, @babel/types@npm:^7.8.3":
-  version: 7.22.3
+  version: 7.22.4
-  resolution: "@babel/types@npm:7.22.3"
+  resolution: "@babel/types@npm:7.22.4"
   dependencies:
     "@babel/helper-string-parser": ^7.21.5
     "@babel/helper-validator-identifier": ^7.19.1
     to-fast-properties: ^2.0.0
-  checksum: 6111fa5990635dfba8812a84bb4889429feb41a2c03c89de2654724e88a85b5740d4795c64a480d188d2f7109e7b47f3f0ba3d56da1b697cd31c65922f4decf7
+  checksum: ffe36bb4f4a99ad13c426a98c3b508d70736036cae4e471d9c862e3a579847ed4f480686af0fce2633f6f7c0f0d3bf02da73da36e7edd3fde0b2061951dcba9a
   languageName: node
   linkType: hard
 
@@ -6784,8 +6784,8 @@ __metadata:
     "@angular/compiler": 16.0.3
     "@babel/code-frame": 7.21.4
     "@babel/generator": 7.22.3
-    "@babel/parser": 7.22.3
+    "@babel/parser": 7.22.4
-    "@babel/types": 7.22.3
+    "@babel/types": 7.22.4
     "@esbuild-plugins/node-modules-polyfill": 0.2.2
     "@glimmer/reference": 0.84.3
     "@glimmer/syntax": 0.84.3