I have a very strange issue with Eslint and Angular. Every time I run ng lint I get errors such as:
An unhandled exception occurred: Cannot read config file: [COMPLETELY_DIFFERENT_PROJECT_PATH]\node_modules\eslint-config-prettier@typescript-eslint.js Error: "prettier/@typescript-eslint" has been merged into "prettier" in eslint-config-prettier 8.0.0. See: https://github.com/prettier/eslint-config-prettier/blob/main/CHANGELOG.md#version-800-2021-02-21
Referenced from: [COMPLETELY_DIFFERENT_PROJECT_PATH]\node_modules@nestjs\axios.eslintrc.js See "[USER]\AppData\Local\Temp\ng-H0X9RR\angular-errors.log" for further details.
Note that these errors occur in a completely different project and a completely different folder than the project I'm running the ng lint command from.
To verify this issue I created a completely new and fresh Angular project using
ng new
And then add eslint schematics using
ng add @angular-eslint/schematics
This generates the following project files:
.eslintrc.json
{
"root": true,
"ignorePatterns": [
"projects/**/*"
],
"overrides": [
{
"files": [
"*.ts"
],
"parserOptions": {
"project": [
"tsconfig.json"
],
"createDefaultProgram": true
},
"extends": [
"plugin:@angular-eslint/recommended",
"plugin:@angular-eslint/template/process-inline-templates"
],
"rules": {
"@angular-eslint/directive-selector": [
"error",
{
"type": "attribute",
"prefix": "app",
"style": "camelCase"
}
],
"@angular-eslint/component-selector": [
"error",
{
"type": "element",
"prefix": "app",
"style": "kebab-case"
}
]
}
},
{
"files": [
"*.html"
],
"extends": [
"plugin:@angular-eslint/template/recommended"
],
"rules": {}
}
]
}
package.json
{
"name": "new-angular-project",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"watch": "ng build --watch --configuration development",
"test": "ng test",
"lint": "ng lint"
},
"private": true,
"dependencies": {
"@angular/animations": "~13.3.0",
"@angular/common": "~13.3.0",
"@angular/compiler": "~13.3.0",
"@angular/core": "~13.3.0",
"@angular/forms": "~13.3.0",
"@angular/platform-browser": "~13.3.0",
"@angular/platform-browser-dynamic": "~13.3.0",
"@angular/router": "~13.3.0",
"rxjs": "~7.5.0",
"tslib": "^2.3.0",
"zone.js": "~0.11.4"
},
"devDependencies": {
"@angular-devkit/build-angular": "~13.3.5",
"@angular-eslint/builder": "13.2.1",
"@angular-eslint/eslint-plugin": "13.2.1",
"@angular-eslint/eslint-plugin-template": "13.2.1",
"@angular-eslint/schematics": "13.2.1",
"@angular-eslint/template-parser": "13.2.1",
"@angular/cli": "~13.3.5",
"@angular/compiler-cli": "~13.3.0",
"@types/jasmine": "~3.10.0",
"@types/node": "^12.11.1",
"@typescript-eslint/eslint-plugin": "5.17.0",
"@typescript-eslint/parser": "5.17.0",
"eslint": "^8.12.0",
"jasmine-core": "~4.0.0",
"karma": "~6.3.0",
"karma-chrome-launcher": "~3.1.0",
"karma-coverage": "~2.1.0",
"karma-jasmine": "~4.0.0",
"karma-jasmine-html-reporter": "~1.7.0",
"typescript": "~4.6.2"
}
}
angular.json
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"newAngularProject": {
"projectType": "application",
"schematics": {
"@schematics/angular:component": {
"style": "scss"
},
"@schematics/angular:application": {
"strict": true
}
},
"root": "",
"sourceRoot": "src",
"prefix": "app",
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist/new-angular-project",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.app.json",
"inlineStyleLanguage": "scss",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.scss"
],
"scripts": []
},
"configurations": {
"production": {
"budgets": [
{
"type": "initial",
"maximumWarning": "500kb",
"maximumError": "1mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "2kb",
"maximumError": "4kb"
}
],
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"outputHashing": "all"
},
"development": {
"buildOptimizer": false,
"optimization": false,
"vendorChunk": true,
"extractLicenses": false,
"sourceMap": true,
"namedChunks": true
}
},
"defaultConfiguration": "production"
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"configurations": {
"production": {
"browserTarget": "newAngularProject:build:production"
},
"development": {
"browserTarget": "newAngularProject:build:development"
}
},
"defaultConfiguration": "development"
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "newAngularProject:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"main": "src/test.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.spec.json",
"karmaConfig": "karma.conf.js",
"inlineStyleLanguage": "scss",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.scss"
],
"scripts": []
}
},
"lint": {
"builder": "@angular-eslint/builder:lint",
"options": {
"lintFilePatterns": [
"src/**/*.ts",
"src/**/*.html"
]
}
}
}
}
},
"defaultProject": "newAngularProject",
"cli": {
"defaultCollection": "@angular-eslint/schematics"
}
}
But even for a completely clean project running ng lint still gives me errors about files that are in a completely different folder than the project I'm running it from. I already searched high and low for a solution but I can't seem to find any solution to this.
What I also find strange is that the eslint extension in VSCode for detecting linting issues while you're programming does work: https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint
I'm completely stumped by this. Is there anyone who can help me?
Try to specify the working directory eslint --ext .js,.ts .
the .
or, ng lint --files=src/**/*.ts
. You can add this to package.json
as: lint:eslint --ext .js,.ts .
and run npm run lint
Found the complete solution based on Idan Rokach's answer. I ended up adding "lint": "eslint --ext .js,.ts src"
to package.json
to only perform linting on the src
folder. Still not sure what the underlying root cause was, but at least this works.
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