87 lines
2.5 KiB
JavaScript
87 lines
2.5 KiB
JavaScript
/**
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* @fileoverview Require use of static imports where possible.
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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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const helpers = require("../helpers");
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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/use-static-import.html",
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},
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fixable: "code",
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messages: {
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useStaticImport:
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"Please use static import instead of ChromeUtils.importESModule",
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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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VariableDeclarator(node) {
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if (
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node.init?.type != "CallExpression" ||
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node.init?.callee?.type != "MemberExpression" ||
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!context.filename.endsWith(".sys.mjs") ||
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!helpers.isTopLevel(context.sourceCode.getAncestors(node))
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) {
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return;
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}
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let callee = node.init.callee;
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if (
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isIdentifier(callee.object, "ChromeUtils") &&
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isIdentifier(callee.property, "importESModule") &&
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callee.parent.arguments.length == 1
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) {
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let sourceCode = context.sourceCode;
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let importItemSource;
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if (node.id.type != "ObjectPattern") {
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importItemSource = sourceCode.getText(node.id);
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} else {
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importItemSource = "{ ";
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let initial = true;
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for (let property of node.id.properties) {
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if (!initial) {
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importItemSource += ", ";
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}
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initial = false;
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if (property.key.name == property.value.name) {
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importItemSource += property.key.name;
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} else {
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importItemSource += `${property.key.name} as ${property.value.name}`;
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}
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}
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importItemSource += " }";
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}
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context.report({
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node: node.parent,
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messageId: "useStaticImport",
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fix(fixer) {
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return fixer.replaceText(
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node.parent,
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`import ${importItemSource} from ${sourceCode.getText(
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callee.parent.arguments[0]
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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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};
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},
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};
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