javascript - Angular 4. 意外的 token 导出

Question

然后我在控制台中通过命令 ng serve 启动应用程序，我看到错误:

VM1018:2297 Uncaught SyntaxError: Unexpected token export
            at eval (<anonymous>)
            at webpackJsonp.../../../../script-loader/addScript.js.module.exports (addScript.js:9)
            at Object.../../../../script-loader/index.js!../../../../popper.js/dist/popper.js (popper.js?6efa:1)
            at __webpack_require__ (bootstrap 88f7324…:54)
            at Object.2 (scripts.bundle.js:66)
            at __webpack_require__ (bootstrap 88f7324…:54)
            at webpackJsonpCallback (bootstrap 88f7324…:25)
            at scripts.bundle.js:1
        webpackJsonp.../../../../script-loader/addScript.js.module.exports  @   addScript.js:9
        ../../../../script-loader/index.js!../../../../popper.js/dist/popper.js @   popper.js?6efa:1
        __webpack_require__ @   bootstrap 88f7324…:54
        2   @   scripts.bundle.js:66
        __webpack_require__ @   bootstrap 88f7324…:54
        webpackJsonpCallback    @   bootstrap 88f7324…:25
        (anonymous) @   scripts.bundle.js:1

只需启动 Angular 应用程序，安装:bootstrap、jQuery、popper.js，然后将样式和脚本文件添加到 angular-cli.json/angular.json

angular-cli.json/angular.json:

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "project": {
    "name": "Web"
  },
  "apps": [
    {
      "root": "src",
      "outDir": "build",
      "assets": [
        "assets",
        "favicon.ico"
      ],
      "index": "index.html",
      "main": "main.ts",
      "polyfills": "polyfills.ts",
      "test": "test.ts",
      "tsconfig": "tsconfig.app.json",
      "testTsconfig": "tsconfig.spec.json",
      "prefix": "app",
      "styles": [
        "../node_modules/bootstrap/dist/css/bootstrap.min.css",
        "styles.css"
      ],
      "scripts": [
        "../node_modules/jquery/dist/jquery.min.js",
        "../node_modules/popper.js/dist/popper.js",
        "../node_modules/bootstrap/dist/js/bootstrap.min.js"
      ],
      "environmentSource": "environments/environment.ts",
      "environments": {
        "dev": "environments/environment.ts",
        "prod": "environments/environment.prod.ts"
      }
    }
  ],
  "e2e": {
    "protractor": {
      "config": "./protractor.conf.js"
    }
  },
  "lint": [
    {
      "project": "src/tsconfig.app.json",
      "exclude": "**/node_modules/**"
    },
    {
      "project": "src/tsconfig.spec.json",
      "exclude": "**/node_modules/**"
    },
    {
      "project": "e2e/tsconfig.e2e.json",
      "exclude": "**/node_modules/**"
    }
  ],
  "test": {
    "karma": {
      "config": "./karma.conf.js"
    }
  },
  "defaults": {
    "styleExt": "css",
    "component": {}
  }
}

我正在使用:

node 8.4.0
npm 5.3.0
jquery 3.2.1
bootstrap 4 beta

我哪里弄错了？ 一些文本或其他内容用于发布带有大部分代码的此查询(我的英语很糟糕，我知道......)

我的 package.json 有这个:

{
  "name": "web",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^4.2.4",
    "@angular/common": "^4.2.4",
    "@angular/compiler": "^4.2.4",
    "@angular/core": "^4.2.4",
    "@angular/forms": "^4.2.4",
    "@angular/http": "^4.2.4",
    "@angular/platform-browser": "^4.2.4",
    "@angular/platform-browser-dynamic": "^4.2.4",
    "@angular/router": "^4.2.4",
    "bootstrap": "^4.0.0-beta",
    "core-js": "^2.4.1",
    "jquery": "^3.2.1",
    "popper.js": "^1.12.5",
    "rxjs": "^5.4.2",
    "zone.js": "^0.8.14"
  },
  "devDependencies": {
    "@angular/cli": "1.3.2",
    "@angular/compiler-cli": "^4.2.4",
    "@angular/language-service": "^4.2.4",
    "@types/jasmine": "~2.5.53",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "~3.1.1",
    "jasmine-core": "~2.6.2",
    "jasmine-spec-reporter": "~4.1.0",
    "karma": "~1.7.0",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~3.2.0",
    "tslint": "~5.3.2",
    "typescript": "~2.3.3"
  }
}

Answer 1

我找到了答案。 在 ./.angular-cli.json 行 scripts 中更改文件夹: "../node_modules/popper.js/dist/popper.js"

to this (if you use modern version of webpack):

"../node_modules/popper.js/dist/esm/popper.js"

else this:

"../node_modules/popper.js/dist/umd/popper.js"

谢谢 fezVrasta