本文将指导您在 Angular 项目中集成 ESLint,并在 Visual Studio Code (VS Code) 中配置和使用 ESLint。
- 安装必要的依赖项
首先,确保您已在项目中安装 Angular CLI。如果还没有,请运行以下命令:
npm install -g @angular/cli
然后,进入您的项目目录并安装以下必要的 ESLint 相关依赖项:
npm install @angular-eslint/builder @angular-eslint/eslint-plugin @typescript-eslint/parser @typescript-eslint/eslint-plugin eslint --save-dev
- 配置 ESLint
创建或修改项目根目录下的 eslint.config.mjs 文件,内容如下:
import typescriptEslintPlugin from '@typescript-eslint/eslint-plugin';
import typescriptEslintParser from '@typescript-eslint/parser';
/** @type {import('eslint').Linter.FlatConfig[]} */
const config = [
{
files: ['**/*.ts'], // 仅针对 TypeScript 文件
languageOptions: {
ecmaVersion: 2020,
sourceType: 'module',
parser: typescriptEslintParser,
},
plugins: {
'@typescript-eslint': typescriptEslintPlugin,
},
rules: {
'semi': ['error', 'always'], // 确保使用分号
// 在此添加其他 ESLint 规则
},
},
];
export default config;
- 更新 Angular 项目配置
编辑 angular.json 文件,将 TSLint 配置替换为 ESLint:
{
"version": 1,
"newProjectRoot": "projects",
"projects": {
"tamalelibs": {
"root": "",
"sourceRoot": "src",
"projectType": "application",
"prefix": "app",
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist/tamalelibs",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "src/tsconfig.app.json",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [],
"scripts": []
},
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"aot": true,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true
}
}
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"options": {
"browserTarget": "tamalelibs:build"
},
"configurations": {
"production": {
"browserTarget": "tamalelibs:build:production"
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "tamalelibs:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"main": "src/test.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "src/tsconfig.spec.json",
"karmaConfig": "src/ut.dev.conf.js",
"styles": [],
"scripts": [],
"assets": [
"src/favicon.ico",
"src/assets"
]
}
},
"lint": {
"builder": "@angular-devkit/build-angular:eslint",
"options": {
"lintFilePatterns": [
"src/**/*.ts",
"src/**/*.html"
]
}
}
}
},
"tamalelibs-e2e": {
"root": "e2e/",
"projectType": "application",
"architect": {
"e2e": {
"builder": "@angular-devkit/build-angular:protractor",
"options": {
"protractorConfig": "e2e/protractor.conf.js",
"devServerTarget": "tamalelibs:serve"
},
"configurations": {
"production": {
"devServerTarget": "tamalelibs:serve:production"
}
}
},
"lint": {
"builder": "@angular-devkit/build-angular:eslint",
"options": {
"lintFilePatterns": [
"e2e/**/*.ts"
]
}
}
}
}
},
"defaultProject": "tamalelibs"
}
- 更新 VSCode 设置
打开 VSCode 设置 (settings.json),确保 ESLint 插件已启用,并配置保存时自动修复代码:
{
"window.zoomLevel": 0,
"editor.detectIndentation": false,
"editor.wordWrap": "on",
"editor.renderWhitespace": "boundary",
"editor.formatOnSave": false,
"typescript.preferences.quoteStyle": "single",
"typescript.preferences.importModuleSpecifier": "relative",
"editor.codeActionsOnSave": {
"source.fixAll.eslint": true
},
"files.trimTrailingWhitespace": true,
"editor.guides.indentation": true
}
确保已安装 ESLint VSCode 扩展程序。在 VSCode 中打开扩展视图,搜索 “ESLint” 并安装。
- 运行 ESLint
在终端中运行以下命令以 lint TypeScript 文件并自动修复问题:
npx eslint "src/**/*.ts" --fix
您还可以通过在 package.json 中添加脚本来简化这个过程:
"scripts": {
// 其他脚本
"lint": "eslint \"src/**/*.ts\" --fix"
}
然后,您可以使用以下命令来运行 ESLint:
npm run lint
通过以上步骤,您已经在您的 Angular 项目中成功集成并配置了 ESLint,并在 VSCode 中设置了保存时自动修复代码。这将有助于确保您的代码风格一致,并减少代码中的潜在错误。