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-rw-r--r--tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-top-level-await.js45
1 files changed, 45 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-top-level-await.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-top-level-await.js
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index 0000000000..023a62b9fc
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+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/reject-top-level-await.js
@@ -0,0 +1,45 @@
+/**
+ * @fileoverview Don't allow only() in tests
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+"use strict";
+
+var helpers = require("../helpers");
+
+module.exports = {
+ meta: {
+ docs: {
+ url: "https://firefox-source-docs.mozilla.org/code-quality/lint/linters/eslint-plugin-mozilla/reject-top-level-await.html",
+ },
+ messages: {
+ rejectTopLevelAwait:
+ "Top-level await is not currently supported in component files.",
+ },
+ schema: [],
+ type: "problem",
+ },
+
+ create(context) {
+ return {
+ AwaitExpression(node) {
+ if (!helpers.getIsTopLevelScript(context.getAncestors())) {
+ return;
+ }
+ context.report({ node, messageId: "rejectTopLevelAwait" });
+ },
+ ForOfStatement(node) {
+ if (
+ !node.await ||
+ !helpers.getIsTopLevelScript(context.getAncestors())
+ ) {
+ return;
+ }
+ context.report({ node, messageId: "rejectTopLevelAwait" });
+ },
+ };
+ },
+};