我正在尝试在Windows机器上以cmd在localhost：4200上运行'ng serve'或'npm start'来运行我的angular 8服务器。我收到架构错误，我想知道问题出在哪里，但不知道如何解决。
要注意的另一点是，在Windows重新启动计算机以进行更新之前，此方法运行良好。
我也在通过Webpack运行。
错误的主要部分是：数据路径“”应具有必需的属性“ browserTarget”
"serve": {
"builder": "@angular-builders/custom-webpack:dev-server",
"options": {
"customWebpackConfig": {
"path": "./webpack.config.js"
}
}
},
我认为我需要在此处的选项中添加browserTarget，当我这样做时，我收到一条错误消息，说我也需要main。
我走对了吗？ 如果是，应归因于这些属性的值是什么？
任何帮助将不胜感激。
我尝试过：
升级我的软件包。
升级Angular
删除节点模块文件夹并进行npm安装
angular.json：
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"bjjcastle": {
"projectType": "application",
"schematics": {
"@schematics/angular:component": {
"style": "scss"
}
},
"root": "",
"sourceRoot": "src",
"prefix": "app",
"architect": {
"build": {
"builder": "@angular-builders/custom-webpack:browser",
"options": {
"customWebpackConfig": {
"path": "./webpack.config.js"
}
}
},
"serve": {
"builder": "@angular-builders/custom-webpack:dev-server",
"options": {
"customWebpackConfig": {
"path": "./webpack.config.js"
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "bjjcastle: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",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.scss",
"node_modules/font-awesome/scss/font-awesome.scss"
],
"scripts": []
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": [
"tsconfig.app.json",
"tsconfig.spec.json",
"e2e/tsconfig.json"
],
"exclude": [
"**/node_modules/**"
]
}
},
"e2e": {
"builder": "@angular-devkit/build-angular:protractor",
"options": {
"protractorConfig": "e2e/protractor.conf.js",
"devServerTarget": "bjjcastle:serve"
},
"configurations": {
"production": {
"devServerTarget": "bjjcastle:serve:production"
}
}
}
}
}},
"defaultProject": "bjjcastle"
}
package.json：
{
"name": "bjjcastle",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/animations": "~8.2.2",
"@angular/common": "~8.2.2",
"@angular/compiler": "~8.2.2",
"@angular/core": "~8.2.2",
"@angular/forms": "~8.2.2",
"@angular/platform-browser": "~8.2.2",
"@angular/platform-browser-dynamic": "~8.2.2",
"@angular/router": "~8.2.2",
"@fortawesome/angular-fontawesome": "^0.5.0",
"@fortawesome/fontawesome-svg-core": "^1.2.21",
"@fortawesome/free-brands-svg-icons": "^5.10.1",
"@fortawesome/free-solid-svg-icons": "^5.10.1",
"rxjs": "~6.5.2",
"tslib": "^1.10.0",
"zone.js": "~0.9.1"
},
"devDependencies": {
"@angular-builders/custom-webpack": "^8.1.0",
"@angular-devkit/build-angular": "~0.802.2",
"@angular/cli": "~8.2.2",
"@angular/compiler-cli": "~8.2.2",
"@angular/language-service": "~8.2.2",
"@types/jasmine": "~3.3.8",
"@types/jasminewd2": "~2.0.3",
"@types/node": "~8.9.4",
"codelyzer": "^5.0.0",
"jasmine-core": "~3.4.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~4.1.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~2.0.1",
"karma-jasmine-html-reporter": "^1.4.0",
"postcss-import": "^12.0.1",
"postcss-loader": "^3.0.0",
"postcss-scss": "^2.0.0",
"protractor": "~5.4.0",
"tailwindcss": "^1.1.1",
"ts-node": "~7.0.0",
"tslint": "~5.15.0",
"typescript": "~3.5.3"
}
}
webpack.config.js：
module.exports = {
module : {
rules: [
{
test : /\.scss$/,
loader : 'postcss-loader',
options: {
ident : 'postcss',
syntax: 'postcss-scss',
plugins: () => [
require('postcss-import'),
require('tailwindcss'),
require('autoprefixer'),
]
}
}
]
}
};
我收到的错误：
Schema validation failed with the following errors:
Data path "" should have required property 'browserTarget'.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! bjjcastle@0.0.0 start: `ng serve`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the bjjcastle@0.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional
logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\MyRoute\AppData\Roaming\npm-cache\_logs\2019-08-16T05_27_51_621Z-debug.log
答案 0 :(得分：0)
在选项对象中添加browserTarget属性
"builder": "@angular-builders/custom-webpack:dev-server",
"options": {
"browserTarget": "bjjcastle:build",
"customWebpackConfig": {
"path": "./webpack.config.js"
}
}
},```
答案 1 :(得分：0)
我遇到了同样的问题，将 angular/cli 更新到最新版本对我有帮助。
在命令行中输入：
ng 更新@angular/cli
答案 2 :(得分：0)
我遇到了完全相同的问题，并意识到我在错误的目录中执行了 npm i。发生这种情况是因为我使用的是在线 IDE，因此 angular CLI 位于根目录中，而我的项目的 package.json 位于子目录中。
我忘记执行子目录中的 npm i