99 lines
2.6 KiB
JavaScript
99 lines
2.6 KiB
JavaScript
/**
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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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const helpers = require("../helpers");
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function findStatement(node) {
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while (node && node.type !== "ExpressionStatement") {
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node = node.parent;
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}
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return node;
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}
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function isIdentifier(node, id) {
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return node && node.type === "Identifier" && node.name === id;
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}
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module.exports = {
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meta: {
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docs: {
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url: "https://firefox-source-docs.mozilla.org/code-quality/lint/linters/eslint-plugin-mozilla/rules/reject-multiple-getters-calls.html",
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},
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messages: {
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rejectMultipleCalls:
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"ChromeUtils.defineESModuleGetters is already called for {{target}} in the same context. Please merge those calls",
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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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const parentToTargets = new Map();
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return {
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CallExpression(node) {
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let callee = node.callee;
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if (
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callee.type === "MemberExpression" &&
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isIdentifier(callee.object, "ChromeUtils") &&
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isIdentifier(callee.property, "defineESModuleGetters")
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) {
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const stmt = findStatement(node);
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if (!stmt) {
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return;
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}
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let target;
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try {
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target = helpers.getASTSource(node.arguments[0]);
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} catch (e) {
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return;
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}
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if (node.arguments.length >= 3) {
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const options = node.arguments[2];
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let globalOption = null;
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if (options.type == "ObjectExpression") {
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for (const prop of options.properties) {
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if (
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prop.type == "Property" &&
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isIdentifier(prop.key, "global")
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) {
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globalOption = helpers.getASTSource(prop.value);
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}
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}
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}
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if (globalOption) {
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target += "+" + globalOption;
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}
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}
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const parent = stmt.parent;
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let targets;
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if (parentToTargets.has(parent)) {
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targets = parentToTargets.get(parent);
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} else {
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targets = new Set();
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parentToTargets.set(parent, targets);
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}
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if (targets.has(target)) {
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context.report({
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node,
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messageId: "rejectMultipleCalls",
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data: { target },
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});
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}
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targets.add(target);
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}
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},
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};
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},
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};
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