我将我的 Angular 4 项目升级到 Angular 6。
我在运行项目时遇到一个错误。
我搜索过类似的问题，但没有得到满意的答案。
OpaqueToken is not a constructor.
这里我附上我的package.json。
{
"dependencies": {
"@angular/animations": "6.1.9",
"@angular/common": "6.1.9",
"@angular/compiler": "6.1.9",
"@angular/compiler-cli": "6.1.9",
"@angular/core": "6.1.9",
"@angular/forms": "6.1.9",
"@angular/http": "6.1.9",
"@angular/platform-browser": "6.1.9",
"@angular/platform-browser-dynamic": "6.1.9",
"@angular/platform-server": "6.1.9",
"@angular/router": "6.1.9",
"@angular/upgrade": "6.1.9",
"@nguniversal/express-engine": "^6.1.0",
"@nguniversal/module-map-ngfactory-loader": "^6.1.0",
"angular-in-memory-web-api": "^0.3.1",
"angular-pipes": "^6.5.3",
"angular-sweetalert": "^1.1.2",
"core-js": "^2.4.1",
"ie-shim": "^0.1.0",
"lodash": "^4.17.5",
"ng2-file-upload": "^1.3.0",
"ng2-meta": "^2.0.3",
"ng2-select": "^2.0.0",
"ng2-slugify": "^0.1.0",
"ng2-vs-checklist": "0.0.1",
"ngx-bootstrap": "^3.0.1",
"ngx-owl-carousel": "^2.0.7",
"ngx-sweetalert2": "^0.2.5",
"reflect-metadata": "^0.1.9",
"rxjs": "^6.3.3",
"rxjs-compat": "^6.3.3",
"script-loader": …我正在以变量形式获取数据""Value""。因此，我想删除引号，但只删除内部引号。我尝试了一下，但是没有用。
var value = "fetchedValue";
value = value.replace(/\"/g, "");
有人可以举例说明吗？
expected = "Value"