Create @babel/plugin-proposal-import-attributes-to-assertions

packages/babel-plugin-proposal-import-attributes-to-assertions/.npmignore

@@ -0,0 +1,3 @@
+src
+test
+*.log

packages/babel-plugin-proposal-import-attributes-to-assertions/README.md

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+# @babel/plugin-proposal-import-attributes-to-assertions
+
+> Transform optional chaining operators to workaround https://crbug.com/v8/11558
+
+See our website [@babel/plugin-proposal-import-attributes-to-assertions](https://babeljs.io/docs/en/babel-plugin-proposal-import-attributes-to-assertions) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/plugin-proposal-import-attributes-to-assertions
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/plugin-proposal-import-attributes-to-assertions --dev
+```

packages/babel-plugin-proposal-import-attributes-to-assertions/package.json

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+{
+  "name": "@babel/plugin-proposal-import-attributes-to-assertions",
+  "version": "7.21.8",
+  "description": "Transform the Import Attributes proposal (`import ... from '...' with { ... }`) to the previous version known as Import Assertions (`import ... from '...' assert { ... }`).",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/babel/babel.git",
+    "directory": "packages/babel-plugin-proposal-import-attributes-to-assertions"
+  },
+  "homepage": "https://babel.dev/docs/en/next/babel-plugin-proposal-import-attributes-to-assertions",
+  "license": "MIT",
+  "publishConfig": {
+    "access": "public"
+  },
+  "main": "./lib/index.js",
+  "exports": {
+    ".": "./lib/index.js",
+    "./package.json": "./package.json"
+  },
+  "keywords": [
+    "babel-plugin",
+    "import",
+    "attributes",
+    "assertions",
+    "proposal",
+    "stage-3"
+  ],
+  "dependencies": {
+    "@babel/helper-plugin-utils": "workspace:^",
+    "@babel/plugin-syntax-import-attributes": "workspace:^"
+  },
+  "peerDependencies": {
+    "@babel/core": "^7.22.0"
+  },
+  "devDependencies": {
+    "@babel/core": "workspace:^",
+    "@babel/helper-plugin-test-runner": "workspace:^"
+  },
+  "engines": {
+    "node": ">=6.9.0"
+  },
+  "author": "The Babel Team (https://babel.dev/team)",
+  "type": "commonjs",
+  "conditions": {
+    "USE_ESM": [
+      {
+        "type": "module"
+      },
+      null
+    ]
+  }
+}

packages/babel-plugin-proposal-import-attributes-to-assertions/src/index.ts

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+import { declare } from "@babel/helper-plugin-utils";
+import type { NodePath } from "@babel/traverse";
+import type * as t from "@babel/types";
+import syntaxImportAttributes from "@babel/plugin-syntax-import-attributes";
+
+export default declare(api => {
+  api.assertVersion(7);
+
+  return {
+    name: "proposal-import-attributes-to-assertions",
+
+    inherits: syntaxImportAttributes,
+
+    manipulateOptions({ generatorOpts }) {
+      generatorOpts.importAttributesKeyword = "assert";
+    },
+
+    visitor: {
+      "ImportDeclaration|ExportNamedDeclaration|ExportAllDeclaration"(
+        path: NodePath<
+          | t.ImportDeclaration
+          | t.ExportNamedDeclaration
+          | t.ExportAllDeclaration
+        >,
+      ) {
+        const { node } = path;
+        if (!node.attributes) return;
+        node.assertions = node.attributes;
+        node.attributes = null;
+      },
+    },
+  };
+});

packages/babel-plugin-proposal-import-attributes-to-assertions/test/fixtures/basic/exports/input.js

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+export { a } from "a" with { type: "json" };
+export * as ns from "c" with { type: "json" };

packages/babel-plugin-proposal-import-attributes-to-assertions/test/fixtures/basic/exports/output.mjs

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+export { a } from "a" assert { type: "json" };
+export * as ns from "c" assert { type: "json" };

packages/babel-plugin-proposal-import-attributes-to-assertions/test/fixtures/basic/imports/input.js

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+import { a } from "a" with { type: "json" };
+import b from "b" with { type: "json" };
+import * as ns from "c" with { type: "json" };
+import "d" with { type: "json" };

packages/babel-plugin-proposal-import-attributes-to-assertions/test/fixtures/basic/imports/output.mjs

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+import { a } from "a" assert { type: "json" };
+import b from "b" assert { type: "json" };
+import * as ns from "c" assert { type: "json" };
+import "d" assert { type: "json" };

packages/babel-plugin-proposal-import-attributes-to-assertions/test/fixtures/options.json

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+{
+  "sourceType": "module",
+  "plugins": ["proposal-import-attributes-to-assertions"]
+}

packages/babel-plugin-proposal-import-attributes-to-assertions/test/index.js

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+import runner from "@babel/helper-plugin-test-runner";
+
+runner(import.meta.url);

packages/babel-plugin-proposal-import-attributes-to-assertions/test/package.json

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+{ "type": "module" }

tsconfig.json

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     "./packages/babel-plugin-proposal-export-namespace-from/src/**/*.ts",
     "./packages/babel-plugin-proposal-function-bind/src/**/*.ts",
     "./packages/babel-plugin-proposal-function-sent/src/**/*.ts",
+    "./packages/babel-plugin-proposal-import-attributes-to-assertions/src/**/*.ts",
     "./packages/babel-plugin-proposal-json-strings/src/**/*.ts",
     "./packages/babel-plugin-proposal-logical-assignment-operators/src/**/*.ts",
     "./packages/babel-plugin-proposal-nullish-coalescing-operator/src/**/*.ts",
@@ -329,6 +330,9 @@
       "@babel/plugin-proposal-function-sent": [
         "./packages/babel-plugin-proposal-function-sent/src"
       ],
+      "@babel/plugin-proposal-import-attributes-to-assertions": [
+        "./packages/babel-plugin-proposal-import-attributes-to-assertions/src"
+      ],
       "@babel/plugin-proposal-json-strings": [
         "./packages/babel-plugin-proposal-json-strings/src"
       ],

yarn.lock

@@ -1473,6 +1473,19 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@babel/plugin-proposal-import-attributes-to-assertions@workspace:packages/babel-plugin-proposal-import-attributes-to-assertions":
+  version: 0.0.0-use.local
+  resolution: "@babel/plugin-proposal-import-attributes-to-assertions@workspace:packages/babel-plugin-proposal-import-attributes-to-assertions"
+  dependencies:
+    "@babel/core": "workspace:^"
+    "@babel/helper-plugin-test-runner": "workspace:^"
+    "@babel/helper-plugin-utils": "workspace:^"
+    "@babel/plugin-syntax-import-attributes": "workspace:^"
+  peerDependencies:
+    "@babel/core": ^7.22.0
+  languageName: unknown
+  linkType: soft
+
 "@babel/plugin-proposal-json-strings@npm:^7.18.6":
   version: 7.18.6
   resolution: "@babel/plugin-proposal-json-strings@npm:7.18.6"