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eslint.config.js
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eslint.config.js
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/*
👋 Hi! This ESLint configuration contains a lot more stuff than many repos'!
You can read from it to see all sorts of linting goodness, but don't worry -
it's not something you need to exhaustively understand immediately. 💙
If you're interested in learning more, see the 'getting started' docs on:
- ESLint: https://eslint.org
- typescript-eslint: https://typescript-eslint.io
*/
import comments from "@eslint-community/eslint-plugin-eslint-comments/configs";
import eslint from "@eslint/js";
import vitest from "@vitest/eslint-plugin";
import jsdoc from "eslint-plugin-jsdoc";
import jsonc from "eslint-plugin-jsonc";
import markdown from "eslint-plugin-markdown";
import n from "eslint-plugin-n";
import packageJson from "eslint-plugin-package-json/configs/recommended";
import perfectionist from "eslint-plugin-perfectionist";
import * as regexp from "eslint-plugin-regexp";
import yml from "eslint-plugin-yml";
import tseslint from "typescript-eslint";
export default tseslint.config(
{
ignores: [
"coverage",
"lib",
"node_modules",
"pnpm-lock.yaml",
"test/cases",
"**/*.snap",
],
},
{
linterOptions: {
reportUnusedDisableDirectives: "error",
},
},
eslint.configs.recommended,
...jsonc.configs["flat/recommended-with-json"],
...markdown.configs.recommended,
...yml.configs["flat/recommended"],
...yml.configs["flat/prettier"],
comments.recommended,
jsdoc.configs["flat/contents-typescript-error"],
jsdoc.configs["flat/logical-typescript-error"],
jsdoc.configs["flat/stylistic-typescript-error"],
n.configs["flat/recommended"],
packageJson,
perfectionist.configs["recommended-natural"],
regexp.configs["flat/recommended"],
{
extends: [
...tseslint.configs.strictTypeChecked,
...tseslint.configs.stylisticTypeChecked,
],
files: ["**/*.js", "**/*.ts"],
languageOptions: {
parserOptions: {
projectService: {
allowDefaultProject: ["*.config.*s"],
},
tsconfigRootDir: import.meta.dirname,
},
},
rules: {
// These on-by-default rules work well for this repo if configured
"@typescript-eslint/no-unnecessary-condition": [
"error",
{
allowConstantLoopConditions: true,
},
],
"@typescript-eslint/prefer-nullish-coalescing": [
"error",
{ ignorePrimitives: true },
],
"@typescript-eslint/restrict-template-expressions": [
"error",
{ allowBoolean: true, allowNullish: true, allowNumber: true },
],
"n/no-unsupported-features/node-builtins": [
"error",
{ allowExperimental: true },
],
// Stylistic concerns that don't interfere with Prettier
"logical-assignment-operators": [
"error",
"always",
{ enforceForIfStatements: true },
],
"no-useless-rename": "error",
"object-shorthand": "error",
"operator-assignment": "error",
// These on-by-default rules don't work well for this repo
"jsdoc/text-escaping": "off",
},
settings: {
perfectionist: {
partitionByComment: true,
type: "natural",
},
},
},
{
extends: [tseslint.configs.disableTypeChecked],
files: ["**/*.md/*.*s"],
rules: {
"@typescript-eslint/no-unused-vars": "off",
"n/no-missing-import": "off",
},
},
{
extends: [vitest.configs.recommended],
files: ["**/*.test.*"],
rules: {
// These on-by-default rules aren't useful in test files.
"@typescript-eslint/no-unsafe-assignment": "off",
"@typescript-eslint/no-unsafe-call": "off",
},
},
{
files: ["**/*.{yml,yaml}"],
rules: {
"yml/file-extension": ["error", { extension: "yml" }],
"yml/sort-keys": [
"error",
{
order: { type: "asc" },
pathPattern: "^.*$",
},
],
"yml/sort-sequence-values": [
"error",
{
order: { type: "asc" },
pathPattern: "^.*$",
},
],
},
},
);