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/* 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
"use strict";
module.exports = function ({ resource, nestedResourceUpdates }) {
for (const { path, value } of nestedResourceUpdates) {
if (
path.length != 3 ||
path[0] != "atRules" ||
typeof path[1] != "number" ||
path[2] != "matches"
) {
// The path should be something like this:
// ["atRules", 0, "matches"]
// where 0 is the index of the object contained in 'atRules' array
// whose 'matches' attribute should be updated with the new 'value'.
throw new Error(
"Unexpected nested resource updates for stylesheet. path: " + path
);
}
const index = path[1];
if (!resource.atRules[index]) {
throw new Error(
"Missing at rule for nested ressource updates at index: " + index
);
}
resource.atRules[index].matches = value;
}
};