Angular 编译警告 : "export ' ɵɵdefineInjectable' was not found in '@angular/core'

Question

我正在尝试为一个 Angular 应用程序提供服务，但是我从“ngx-mqtt”:“^6.6.0”中得到了这个依赖错误。我的本地 CLI 是 6.2.9 版本。我正在尝试更改此依赖项的版本，但我仍然收到此错误。我只是不明白为什么会这样。

WARNING in ./node_modules/ngx-mqtt/src/mqtt.service.js 390:34-55 "export 'ɵɵdefineInjectable' (imported as 'i0') was not found in '@angular/core'

WARNING in ./node_modules/ngx-mqtt/src/mqtt.service.js 390:126-137 "export 'ɵɵinject' (imported as 'i0') was not found in '@angular/core'

WARNING in ./node_modules/ngx-mqtt/src/mqtt.service.js 390:161-172 "export 'ɵɵinject' (imported as 'i0') was not found in '@angular/core'

这些是我从 package.json 中的主要依赖项

 "dependencies": {
        "@angular/animations": "^6.1.7",
        "@angular/cdk": "^6.4.7",
        "@angular/cli": "~6.2.1",
        "@angular/common": "^6.1.0",
        "@angular/compiler": "^6.1.0",
        "@angular/compiler-cli": "^6.1.0",
        "@angular/core": "^6.1.0",
        "@angular/flex-layout": "^6.0.0-beta.18",
        "@angular/forms": "^6.1.0",
        "@angular/http": "^6.1.0",
        "@angular/material": "^6.4.7",
        "@angular/material-moment-adapter": "^6.4.7",
        "@angular/platform-browser": "^6.1.0",
        "@angular/platform-browser-dynamic": "^6.1.0",
        "@angular/router": "^6.1.0",
        "@fortawesome/angular-fontawesome": "^0.3.0",
        "@fortawesome/fontawesome-svg-core": "^1.2.21",
        "@fortawesome/free-regular-svg-icons": "^5.10.1",
        "@fortawesome/free-solid-svg-icons": "^5.10.1",
...

"devDependencies": {
        "@angular-devkit/build-angular": "~0.8.0",
        "@angular/language-service": "^6.1.0",
        "@types/core-js": "^2.5.0",
        "@types/node": "~8.9.4",
        "codelyzer": "~4.3.0",
        "ts-node": "^7.0.1",
        "tslint": "^5.11.0",
        "typescript": "^2.9.2"
}

Answer 1

删除字符 ^来自 "ngx-mqtt": "^6.6.0"解决了问题。