“区域战争犯”；意外标记<&引用；启动angular 2应用程序后

我在启动angular 2应用程序后出错。导致错误的原因是什么？如何修复？当我在main.ts中需要@angular/core时，它看起来会发生

"SyntaxError: Unexpected token <
    at eval (<anonymous>)
    at SystemJSLoader.__exec (http://localhost:5555/node_modules/systemjs/dist/system.src.js?1501265527981:1506:18)
    at entry.execute (http://localhost:5555/node_modules/systemjs/dist/system.src.js?1501265527981:3647:16)
    at linkDynamicModule (http://localhost:5555/node_modules/systemjs/dist/system.src.js?1501265527981:3247:32)
    at linkDynamicModule (http://localhost:5555/node_modules/systemjs/dist/system.src.js?1501265527981:3241:11)
    at getModule (http://localhost:5555/node_modules/systemjs/dist/system.src.js?1501265527981:3215:9)
    at http://localhost:5555/node_modules/systemjs/dist/system.src.js?1501265527981:3251:16
    at require (http://localhost:5555/node_modules/systemjs/dist/system.src.js?1501265527981:3888:29)
    at Object.eval (http://localhost:5555/app/main.js:2:14)
    at eval (http://localhost:5555/app/main.js:13:4)
    at eval (http://localhost:5555/app/main.js:14:3)
    at eval (<anonymous>)
    at SystemJSLoader.__exec (http://localhost:5555/node_modules/systemjs/dist/system.src.js?1501265527981:1506:18)
    at entry.execute (http://localhost:5555/node_modules/systemjs/dist/system.src.js?1501265527981:3921:18)
    at linkDynamicModule (http://localhost:5555/node_modules/systemjs/dist/system.src.js?1501265527981:3247:32)"

package.json

...
"dependencies": {
    "@angular/common": "^2.4.10",
    "@angular/compiler": "^2.4.10",
    "@angular/core": "^2.4.10",
    "@angular/forms": "^2.4.10",
    "@angular/http": "^2.4.10",
    "@angular/platform-browser": "^2.4.10",
    "@angular/platform-browser-dynamic": "^2.4.10",
    "@angular/router": "^3.4.10",
...

---

是的，我已经检查了网络选项卡，所有内容都返回js。我会再次检查。我同意@Jake，无论何时我遇到这个问题，它都是在网络方面，或者至少是从外部来源收到的。是的，我已经检查了网络选项卡，所有内容都返回js。我会再次检查。我同意@Jake，每当我遇到这个问题时，它都是在网络方面，或者至少是我从外部来源收到的。

...
"dependencies": {
    "@angular/common": "^2.4.10",
    "@angular/compiler": "^2.4.10",
    "@angular/core": "^2.4.10",
    "@angular/forms": "^2.4.10",
    "@angular/http": "^2.4.10",
    "@angular/platform-browser": "^2.4.10",
    "@angular/platform-browser-dynamic": "^2.4.10",
    "@angular/router": "^3.4.10",
...