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/**
* @fileoverview Reject calls to ChromeUtils.import(..., null). This allows to
* retrieve the global object for the JSM, instead we should rely on explicitly
* exported symbols.
*
* 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
// -----------------------------------------------------------------------------
function isIdentifier(node, id) {
return node && node.type === "Identifier" && node.name === id;
}
module.exports = function(context) {
// ---------------------------------------------------------------------------
// Public
// --------------------------------------------------------------------------
return {
CallExpression(node) {
let { callee } = node;
if (
isIdentifier(callee.object, "ChromeUtils") &&
isIdentifier(callee.property, "import") &&
node.arguments.length >= 2 &&
node.arguments[1].type == "Literal" &&
node.arguments[1].raw == "null"
) {
context.report(
node,
"ChromeUtils.import should not be called with (..., null) to " +
"retrieve the JSM global object. Rely on explicit exports instead."
);
}
},
};
};
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