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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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34
tools/lint/eslint/eslint-plugin-mozilla/lib/rules/var-only-at-top-level.js Normal file
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/**
* @fileoverview Marks all var declarations that are not at the top level
* invalid.
*
* 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";
// -----------------------------------------------------------------------------
// Rule Definition
// -----------------------------------------------------------------------------
var helpers = require("../helpers");
module.exports = function(context) {
// ---------------------------------------------------------------------------
// Public
// --------------------------------------------------------------------------
return {
"VariableDeclaration": function(node) {
if (node.kind === "var") {
if (helpers.getIsGlobalScope(context.getAncestors())) {
return;
}
context.report(node, "Unexpected var, use let or const instead.");
}
}
};
};