61 lines
1.4 KiB
JavaScript
61 lines
1.4 KiB
JavaScript
/**
|
|
* @fileoverview Disallow using Date for timing in performance sensitive code
|
|
*
|
|
* 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";
|
|
|
|
module.exports = {
|
|
meta: {
|
|
docs: {
|
|
url: "https://icecat-source-docs.mozilla.org/code-quality/lint/linters/eslint-plugin-mozilla/rules/avoid-Date-timing.html",
|
|
},
|
|
messages: {
|
|
usePerfNow:
|
|
"use performance.now() instead of Date.now() for timing measurements",
|
|
},
|
|
schema: [],
|
|
type: "problem",
|
|
},
|
|
|
|
create(context) {
|
|
return {
|
|
CallExpression(node) {
|
|
let callee = node.callee;
|
|
if (
|
|
callee.type !== "MemberExpression" ||
|
|
callee.object.type !== "Identifier" ||
|
|
callee.object.name !== "Date" ||
|
|
callee.property.type !== "Identifier" ||
|
|
callee.property.name !== "now"
|
|
) {
|
|
return;
|
|
}
|
|
|
|
context.report({
|
|
node,
|
|
messageId: "usePerfNow",
|
|
});
|
|
},
|
|
|
|
NewExpression(node) {
|
|
let callee = node.callee;
|
|
if (
|
|
callee.type !== "Identifier" ||
|
|
callee.name !== "Date" ||
|
|
node.arguments.length
|
|
) {
|
|
return;
|
|
}
|
|
|
|
context.report({
|
|
node,
|
|
messageId: "usePerfNow",
|
|
});
|
|
},
|
|
};
|
|
},
|
|
};
|