Try searching for existing issues. You can tell ESLint to ignore specific files and directories by creating an .eslintignore file in your project's root directory. ESLint supports adding shared settings into configuration file. This includes sub-dotfiles and sub-dotfolders that are buried deeper in the directory structure. The set of core rules can change at any minor or major version of ESLint. The eslint-plugin- prefix can be omitted for non-scoped packages. Relative paths and shareable config names in an extends property are resolved from the location of the config file where they appear. read more: JetBrains - ESLint (opens new window). The implicit rules are as follows: There are also some exceptions to these rules: If the path to lint is a glob pattern or directory path and contains a Dotfolder, all Dotfiles and Dotfolders will be linted. Due to this error eslint stops working in VSCode. Selecting a language will take you to the ESLint website in that language. This allows your configuration files to be more human-friendly. If Prettier conflicts with a rule you have set, turn off that rule (opens new window). The top-level ecmaFeatures option has been invalid since ESLint v2.0.0 (released in February 2016). Plugins are resolved relative to the config file. The same rule does apply to scoped packages: When using rules, environments or configs defined by plugins, they must be referenced following the convention: ESLint comes with a large number of rules. Require using Error objects as Promise rejection reasons, Disallow use of the `RegExp` constructor in favor of regular expression literals, Require rest parameters instead of `arguments`, Require spread operators instead of `.apply()`, Require template literals instead of string concatenation, Require quotes around object literal property names, Enforce the consistent use of the radix argument when using `parseInt()`, Disallow async functions which have no `await` expression, Require generator functions to contain `yield`, Enforce sorted import declarations within modules, Require variables within the same declaration block to be sorted, Enforce consistent spacing after the `//` or `/*` in a comment, Require or disallow strict mode directives, Require `var` declarations be placed at the top of their containing scope, These rules care about how the code looks rather than how it executes: Modeling a special case of conservation of flow. Globs are matched using node-ignore, so a number of features are available: Of particular note is that like .gitignore files, all paths used as patterns for both .eslintignore and --ignore-pattern must use forward slashes as their path separators. Multiple glob patterns can be provided within a single override block. How to remove eslint plugin eslint-plugin-jsx-a11y? For example, in an environment where most ES2015 globals are available but Promise is unavailable, you might use this config: For historical reasons, the boolean value false and the string value "readable" are equivalent to "readonly". So, this pattern would match app/lib/fooSpec.js and app/components/barSpec.js but NOT server/serverSpec.js. (Not my answer BTW). The issue is that you have a top-level ecmaFeatures property in your config file. // override/add rules settings here, such as: , "text.html.vue, source.js - meta.attribute-with-value". ESLint uses only the unprefixed name internally to locate rules. Would anyone be able to create a small reproduction for this issue? You can define global variables either using comments inside of a file or in the configuration file. If you use the Vetur plugin, set "vetur.validation.template": false to avoid default Vetur template validation. Environments can be specified inside of a file, in configuration files or using the --env command line flag. This plugin uses vue-eslint-parser (opens new window). Similarly, the boolean value true and the string value "writeable" are equivalent to "writable". Why is the US residential model untouchable and unquestionable? Not being snarky, I appreciate your help. Extends For example, if --config configs/.eslintrc.json is present, the glob patterns in the config are relative to . Enforce "for" loop update clause moving the counter in the right direction. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Please note that it doesn't load global-installed packages. You can override that setting to enable support for other ECMAScript versions as well as JSX by using parser options. * and package.json files for configuration, you can take advantage of configuration cascading. This would avoid needing to keep eslint version matching root, and potentially we could just have npm run lint:eslint call mach lint -l eslint browser/components/newtab ? The .eslintignore file is a plain text file where each line is a glob pattern indicating which paths should be omitted from linting. callback-return In case anyone has this issue and needs a step-by-step, there is a simple couple of actions (replacing the problematic ecmaFeatures entry in the airbnb rules) on Stackoverflow ESLint Module build failed error with eslint-config-airbnb . Fix * file at your project's root level. section. Suggestions, Enforce linebreaks after opening and before closing array brackets, Enforce consistent spacing inside array brackets, Enforce line breaks after each array element, Require parentheses around arrow function arguments, Enforce consistent spacing before and after the arrow in arrow functions, Disallow or enforce spaces inside of blocks after opening block and before closing block, Enforce consistent brace style for blocks, Enforce consistent spacing before and after commas, Enforce consistent spacing inside computed property brackets, Enforce consistent newlines before and after dots, Require or disallow newline at the end of files, Require or disallow spacing between function identifiers and their invocations, Enforce line breaks between arguments of a function call, Enforce consistent line breaks inside function parentheses, Enforce consistent spacing around `*` operators in generator functions, Enforce the location of arrow function bodies, Enforce the consistent use of either double or single quotes in JSX attributes, Enforce consistent spacing between keys and values in object literal properties, Enforce consistent spacing before and after keywords, Require or disallow an empty line between class members, Enforce a maximum number of statements allowed per line, Enforce newlines between operands of ternary expressions, Enforce or disallow parentheses when invoking a constructor with no arguments, Require a newline after each call in a method chain, Disallow mixed spaces and tabs for indentation, Disallow trailing whitespace at the end of lines, Enforce the location of single-line statements, Enforce consistent line breaks after opening and before closing braces, Enforce placing object properties on separate lines, Enforce consistent linebreak style for operators, Require or disallow padding within blocks, Require or disallow padding lines between statements, Enforce the consistent use of either backticks, double, or single quotes, Enforce spacing between rest and spread operators and their expressions, Require or disallow semicolons instead of ASI, Enforce consistent spacing before and after semicolons, Enforce consistent spacing before `function` definition opening parenthesis, Enforce consistent spacing inside parentheses, Enforce consistent spacing before or after unary operators, Enforce spacing around colons of switch statements, Require or disallow spacing around embedded expressions of template strings, Require or disallow spacing between template tags and their literals, Require or disallow Unicode byte order mark (BOM), Require parentheses around immediate `function` invocations, Require parenthesis around regex literals, Require or disallow spacing around the `*` in `yield*` expressions, These rules have been deprecated in accordance with the deprecation policy, and replaced by newer rules: See also: "Visual Studio Code" section and Vetur - Linting (opens new window). The common factor I've seen in all failing examples so far is "extends": "eslint:recommended". removed, Replaced by object-curly-spacingarray-bracket-spacing, space-return-throw-case If you pass a specific file to ESLint, then you will see a warning indicating that the file was skipped. To temporarily disable rule warnings in your file, use block comments in the following format: You can also disable or enable warnings for specific rules: To disable rule warnings in an entire file, put a /* eslint-disable */ block comment at the top of the file: You can also disable or enable specific rules for an entire file: To disable all rules on a specific line, use a line or block comment in one of the following formats: To disable a specific rule on a specific line: To disable multiple rules on a specific line: All of the above methods also work for plugin rules. You may need to restart Atom. Maybe keep the browser/components/newtab/.eslintrc.js as it is for now, but drop the associated .eslintignore. oh, damn. If a config is provided via the --config CLI option, the ignore patterns that start with / in the config are relative to the current working directory rather than the base directory of the given config. I get this error in every js file where i've used an alias to import. Other rules - because they're not covering potential bugs in the application - report warnings. What did you do? Paths are relative to the current working directory. Disallow using an async function as a Promise executor, Disallow assignment operators in conditional expressions, Disallow expressions where the operation doesn't affect the value, Disallow constant expressions in conditions, Disallow returning value from constructor, Disallow control characters in regular expressions, Disallow duplicate arguments in `function` definitions, Disallow duplicate conditions in if-else-if chains, Disallow duplicate keys in object literals, Disallow empty character classes in regular expressions, Disallow reassigning exceptions in `catch` clauses, Disallow fallthrough of `case` statements, Disallow reassigning `function` declarations, Disallow variable or `function` declarations in nested blocks, Disallow invalid regular expression strings in `RegExp` constructors, Disallow literal numbers that lose precision, Disallow characters which are made with multiple code points in character class syntax, Disallow `new` operators with the `Symbol` object, Disallow calling global object properties as functions, Disallow returning values from Promise executor functions, Disallow calling some `Object.prototype` methods directly on objects, Disallow assignments where both sides are exactly the same, Disallow comparisons where both sides are exactly the same, Disallow template literal placeholder syntax in regular strings, Disallow `this`/`super` before calling `super()` in constructors, Disallow the use of undeclared variables unless mentioned in `/*global */` comments, Disallow unreachable code after `return`, `throw`, `continue`, and `break` statements, Disallow loops with a body that allows only one iteration, Disallow control flow statements in `finally` blocks, Disallow negating the left operand of relational operators, Disallow use of optional chaining in contexts where the `undefined` value is not allowed, Disallow the use of variables before they are defined, Disallow useless backreferences in regular expressions, Disallow assignments that can lead to race conditions due to usage of `await` or `yield`, Require calls to `isNaN()` when checking for `NaN`, Enforce comparing `typeof` expressions against valid strings, These rules suggest alternate ways of doing things: Make sure the package has been installed to a directory where ESLint can require it. Enforce getter and setter pairs in objects and classes Already on GitHub? Use at your own risk. v4.1.0+. change an inherited rule's severity without changing its options: override options for rules from base configurations: the package name (from which you can omit the prefix, for example, The patterns are applied against the file path relative to the directory of the config file. As the message indicates, you can use --no-ignore to omit using the ignore rules. default. This fails because the m-c/.eslintrc.js is loaded when running m-c/browser/components/newtab/node_modules/.bin/eslint. Connect and share knowledge within a single location that is structured and easy to search. You need to use vue-eslint-parser (opens new window) v9.0.0 or later. @stevekennaird Answer fixes it for the eslint vscode plugin. It must be a Node module loadable from the config file where it appears. // add more generic rulesets here, such as: // 'plugin:vue/recommended' // Use this if you are using Vue.js 2.x. See the parserOptions.vueFeatures documentation for vue-eslint-parser (opens new window) for more details. The config in app/.eslintrc.json defines the glob pattern **/*Spec.js. ESLint extends configurations recursively, so a base configuration can also have an extends property. Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, ESLINT: ESLINT Error: ESLint configuration in ..\..\..\..\.eslintrc is invalid: - Unexpected top-level property "import/extensions", How APIs can take the pain out of legacy system headaches (Ep. Marking my comment obsolete. Anyways, thank you for the help! ESLint will stop looking in parent folders once it finds a configuration with "root": true. Note that you cannot use angle-bracket type assertion style (var x =