ESLint v9.16.0 released

Highlights

ignoreComputedKeys option for sort-keys

This release adds a new boolean option ignoreComputedKeys to the sort-keys rule. ignoreComputedKeys allows a more consistent sorting of properties with non-computed names by treating computed keys as group separators rather than part of a group. The following example shows the expected sorting of properties in an object literal without the ignoreComputedKeys option.

with ignoreComputedKeys: false (default)

const obj = { a: 10, b: 20, [c]: 7.5, d: 15 };

When ignoreComputedKeys is set to true, the computed key c can appear anywhere in the literal, as long as the other groups of properties are sorted.

with ignoreComputedKeys: true

const obj = { a: 10, b: 20, [c]: 7.5, d: 15 };

or

const obj = { d: 15, [c]: 7.5, a: 10, b: 20 };

or

const obj = { a: 10, b: 20, d: 15, [c]: 7.5 };

etc.

Language-agnostic no-restricted-syntax

Another enhancement in this release is the ability to use the no-restricted-syntax rule with any language. This was already possible in previous releases, but now usage with language plugins is officially supported and documented.

When linting JSON files with the @eslint/json plugin, a config that warns about the usage of null could look like this:

import json from "@eslint/json";

export default [
    {
        files: ["**/*.json"],
        language: "json/json",
        plugins: {
            json,
        },
        rules: {
            "no-restricted-syntax": [
                "warn",
                "Null" // AST selector for `null`
            ],
        },
    },
];

If you would like to restrict syntax in your project based on AST selectors but you’re unsure what nodes represent a particular code, we recommend using Code Explorer.

Features

• 8f70eb1 feat: Add ignoreComputedKeys option in sort-keys rule (#19162) (Milos Djermanovic)

Documentation

• 9eefc8f docs: fix typos in use-isnan (#19190) (루밀LuMir)
• 0c8cea8 docs: switch the order of words in no-unreachable (#19189) (루밀LuMir)
• 0c19417 docs: add missing backtick to no-async-promise-executor (#19188) (루밀LuMir)
• 8df9276 docs: add backtick in -0 in description of no-compare-neg-zero (#19186) (루밀LuMir)
• 7e16e3f docs: fix caseSensitive option’s title of sort-keys (#19183) (Tanuj Kanti)
• 0c6b842 docs: fix typos in migration-guide.md (#19180) (루밀LuMir)
• 353266e docs: fix a typo in debug.md (#19179) (루밀LuMir)
• 5ff318a docs: delete unnecessary horizontal rule(---) in nodejs-api (#19175) (루밀LuMir)
• 576bcc5 docs: mark more rules as handled by TypeScript (#19164) (Tanuj Kanti)
• 742d054 docs: note that no-restricted-syntax can be used with any language (#19148) (Milos Djermanovic)

Chores

• feb703b chore: upgrade to @eslint/js@9.16.0 (#19195) (Francesco Trotta)
• df9bf95 chore: package.json update for @eslint/js release (Jenkins)
• f831893 chore: add type for ignoreComputedKeys option of sort-keys (#19184) (Tanuj Kanti)
• 3afb8a1 chore: update dependency @eslint/json to ^0.8.0 (#19177) (Milos Djermanovic)
• 1f77c53 chore: add repository.directory property to package.json (#19165) (루밀LuMir)
• d460594 chore: update dependency @arethetypeswrong/cli to ^0.17.0 (#19147) (renovate[bot])
• 45cd4ea refactor: update default options in rules (#19136) (Milos Djermanovic)