就我而言，我仅将版本从 “ @ agm / core”：“ ^ 1.0.0-beta.5” 更改为 “ @ agm / core”：“ 1.0.0” 。

对于有角度的7、8，新版本 “ @ agm / core”：“ 1.1.0” 不起作用， “ @ agm / core“：都不是” ^ 1.0.0-beta.5“ 。

尝试删除您的import Player from './player.js'; import InputHandler from './input.js'; import { buildLevel,map1 } from './levels.js'; export default class Game { constructor(gameWidth,gameHeight) { this.gameWidth = gameWidth; this.gameHeight = gameHeight; this.player = new Player(this); this.gameObjects = []; this.walls = []; this.levels = [map1]; this.currentLevel = 0; new InputHandler(this.player,this); } start() { this.walls = buildLevel(this,this.levels[this.currentLevel]); console.log('yes'); this.gameObjects = [this.player]; } update(deltaTime) { console.log('update'); } draw(ctx) { console.log('draw'); [...this.gameObjects,...this.walls].forEach(object => object.draw(ctx)); } } 文件夹和node_modules文件，然后重新运行package-lock.json

或者，运行npm install，即使磁盘上存在本地副本，force标志也会强制npm获取远程资源。

最后，您可以尝试重新安装npm i --force：

npm

Yash，

我通过在新文件夹中克隆项目的方式解决了该问题，然后升级了NPM版本并再次安装了node_modules。

我通过打开 node_modules/ 并从 ɵɵinject 包中删除所有出现的 ɵɵdefineInjectable 和 @agm/core 解决了这个问题。

这是我的package.json

{
"name": "eterna-posta-web","version": "0.0.0","scripts": {
"ng": "ng","start": "ng serve","build": "ng build","test": "ng test","lint": "ng lint","e2e": "ng e2e"
},"private": true,"dependencies": {
  "@agm/core": "^1.0.0-beta.7","@agm/js-marker-clusterer": "^1.0.0","@angular/animations": "~7.1.0","@angular/common": "~7.1.0","@angular/compiler": "~7.1.0","@angular/core": "~7.1.0","@angular/forms": "~7.1.0","@angular/http": "^7.1.3","@angular/platform-browser": "~7.1.0","@angular/platform-browser-dynamic": "~7.1.0","@angular/router": "~7.1.0","@microsoft/signalr": "^5.0.3","@techiediaries/ngx-qrcode": "^9.1.0","core-js": "^2.5.4","js-marker-clusterer": "^1.0.0","rxjs": "~6.3.3","tslib": "^1.9.0","zone.js": "~0.8.26"
},"devDependencies": {
"@angular-devkit/build-angular": "^0.13.8","@angular/cli": "~7.1.2","@angular/compiler-cli": "~7.1.0","@angular/language-service": "~7.1.0","@types/jasmine": "~2.8.8","@types/jasminewd2": "~2.0.3","@types/node": "~8.9.4","codelyzer": "~4.5.0","jasmine-core": "~2.99.1","jasmine-spec-reporter": "~4.2.1","karma": "~3.1.1","karma-chrome-launcher": "~2.2.0","karma-coverage-istanbul-reporter": "~2.0.1","karma-jasmine": "~1.1.2","karma-jasmine-html-reporter": "^0.2.2","protractor": "~5.4.0","ts-node": "~7.0.0","tslint": "~5.11.0","typescript": "~3.1.6"
 }
}

这是原始答案：answer

只需将@ agm / core设置为@ agm / core”：“ 1.0.0” 和 打“ npm我” 经过我的研究