42 lines
1,021 B
JavaScript
42 lines
1,021 B
JavaScript
/**
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* @fileoverview Marks all var declarations that are not at the top level
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* invalid.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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"use strict";
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var helpers = require("../helpers");
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module.exports = {
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meta: {
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docs: {
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url: "https://icecat-source-docs.mozilla.org/code-quality/lint/linters/eslint-plugin-mozilla/rules/var-only-at-top-level.html",
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},
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messages: {
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unexpectedVar: "Unexpected var, use let or const instead.",
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},
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schema: [],
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type: "suggestion",
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},
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create(context) {
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return {
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VariableDeclaration(node) {
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if (node.kind === "var") {
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if (helpers.getIsTopLevelScript(context.getAncestors())) {
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return;
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}
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context.report({
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node,
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messageId: "unexpectedVar",
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});
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}
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},
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};
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},
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};
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