Question

我正在尝试编译我的有角度的应用程序以进行生产。我发出了以下命令：

ng build --prod

我遇到了一些与引导程序有关的错误：

ERROR in ./node_modules/bootstrap/dist/css/bootstrap.css
Module build failed: BrowserslistError: Unknown browser major
    at error (C:\frontend\node_modules\postcss-merge-rules\node_modules\browserslist\index.js:37:11)

不确定要解决这些错误需要做什么。当我发出命令

ng serve

使用ng serve成功编译了应用程序。以下是我的Package.json文件：

{
  "name": "frontend",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build --prod",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^5.2.4",
    "@angular/cdk": "^5.2.1",
    "@angular/common": "^5.2.0",
    "@angular/compiler": "^5.2.0",
    "@angular/core": "^5.2.0",
    "@angular/flex-layout": "^5.0.0-beta.14",
    "@angular/forms": "^5.2.0",
    "@angular/http": "^5.2.0",
    "@angular/material": "^5.2.1",
    "@angular/platform-browser": "^5.2.0",
    "@angular/platform-browser-dynamic": "^5.2.0",
    "@angular/router": "^5.2.0",
    "ajv": "^6.0.0",
    "angular2-text-mask": "^9.0.0",
    "angular5-time-picker": "^1.0.8",
    "bootstrap": "^4.0.0",
    "core-js": "^2.4.1",
    "font-awesome": "^4.7.0",
    "jquery": "^1.9.1",
    "ngx-mask": "^2.9.6",
    "popper.js": "^1.12.9",
    "rxjs": "^5.5.6",
    "text-mask-addons": "^3.7.2",
    "zone.js": "^0.8.19"
  },
  "devDependencies": {
    "@angular/cli": "1.6.7",
    "@angular/compiler-cli": "^5.2.0",
    "@angular/language-service": "^5.2.0",
    "@types/jasmine": "~2.8.3",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "^4.0.1",
    "jasmine-core": "~2.8.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "^2.0.4",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "^5.3.2",
    "ts-node": "~4.1.0",
    "tslint": "~5.9.1",
    "typescript": "~2.5.3"
  }
}

任何帮助将不胜感激。

Answer 1

尝试将引导程序版本更新为“ bootstrap”：“ ^ 4.3.1”

Answer 2

从"bootstrap": "^4.0.0"删除' ^ '或将Angular CLI更新到1.7版。问题出在与更新的Bootstrap不兼容的自动前缀版本。

BrowserslistError: Unknown browser major

Answer 3

将引导程序更新到4.1.3将解决此问题。（"bootstrap": "^4.3.1"。

这在this thread中进行了讨论。

角度应用的生产编译

3 个答案: