第一次使用firestore,我得到这个错误。根据我的研究,这似乎是艾薇的问题。我没有太多修改tsconfig.app的经验。json,这是我所指向的方向,然后是其他答案。

我唯一能从最初的项目中修改的是使用Angular Fire 6而不是5,我最初是按照教程做的。

package.json:

{
  "name": "language",
  "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": {
    "@angular/animations": "~9.0.1",
    "@angular/cdk": "^9.0.0",
    "@angular/common": "~9.0.1",
    "@angular/compiler": "~9.0.1",
    "@angular/core": "~9.0.1",
    "@angular/fire": "^6.0.0-rc.1",
    "@angular/flex-layout": "^9.0.0-beta.29",
    "@angular/forms": "~9.0.1",
    "@angular/material": "^9.0.0",
    "@angular/platform-browser": "~9.0.1",
    "@angular/platform-browser-dynamic": "~9.0.1",
    "@angular/router": "~9.0.1",
    "firebase": "^7.8.2",
    "rxjs": "~6.5.4",
    "rxjs-compat": "^6.5.4",
    "tslib": "^1.10.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.900.2",
    "@angular/cli": "~9.0.2",
    "@angular/compiler-cli": "~9.0.1",
    "@angular/language-service": "~9.0.1",
    "@types/node": "^12.11.1",
    "@types/jasmine": "~3.3.8",
    "@types/jasminewd2": "~2.0.3",
    "codelyzer": "^5.1.2",
    "jasmine-core": "~3.4.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.1.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.4.0",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.15.0",
    "typescript": "~3.7.5",
    "@angular-devkit/architect": "^0.900.0-0 || ^0.900.0",
    "firebase-tools": "^7.12.1",
    "fuzzy": "^0.1.3",
    "inquirer": "^6.2.2",
    "inquirer-autocomplete-prompt": "^1.0.1"
  }
}

angular.json

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "language": {
      "projectType": "application",
      "schematics": {
        "@schematics/angular:component": {
          "style": "scss"
        }
      },
      "root": "",
      "sourceRoot": "src",
      "prefix": "app",
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist/language",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.app.json",
            "aot": true,
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "./node_modules/@angular/material/prebuilt-themes/deeppurple-amber.css",
              "src/styles.scss"
            ],
            "scripts": []
          },
          "configurations": {
            "production": {
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ],
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "2mb",
                  "maximumError": "5mb"
                },
                {
                  "type": "anyComponentStyle",
                  "maximumWarning": "6kb",
                  "maximumError": "10kb"
                }
              ]
            }
          }
        },
        "serve": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "language:build"
          },
          "configurations": {
            "production": {
              "browserTarget": "language:build:production"
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "language:build"
          }
        },
        "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.spec.json",
            "karmaConfig": "karma.conf.js",
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "./node_modules/@angular/material/prebuilt-themes/deeppurple-amber.css",
              "src/styles.scss"
            ],
            "scripts": []
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "tsconfig.app.json",
              "tsconfig.spec.json",
              "e2e/tsconfig.json"
            ],
            "exclude": [
              "**/node_modules/**"
            ]
          }
        },
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "e2e/protractor.conf.js",
            "devServerTarget": "language:serve"
          },
          "configurations": {
            "production": {
              "devServerTarget": "language:serve:production"
            }
          }
        },
        "deploy": {
          "builder": "@angular/fire:deploy",
          "options": {}
        }
      }
    }
  },
  "defaultProject": "language"
}

tsconfig.app.json

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/app",
    "types": [],
  
  },
  "files": [
    "src/main.ts",
    "src/polyfills.ts"
  ],
  "include": [
    "src/**/*.d.ts"
  ],
  "exclude": [
    "src/test.ts",
    "src/**/*.spec.ts"
  ]
}

谢谢!


当前回答

当您导入一些在组件中没有使用的mat组件时,也会发生这种情况。

if you have all mat components imported in you app.module.ts you have imported some mat components and you have not used any of the components in imports and exports arrays in app.module.ts means no issues no errors will throw works fine. if you create feature module for that let say by ng g m material this will create material.module.ts filename. now we have to copy all mat import statements to newly created feature module before copying keep in mind is any import statements grayed out or not(some indication IDE shows this name is not used). if grayed out means you have to remove those names then copy and paste it to MaterialModule imports and exports array. that's solve.

其他回答

我已经测试了这里所有的答案,但没有一个对我有用。所以我决定改变angular.js文件。这里有一个aot选项是真的。然后我把它改成假的,错误就消失了!

"options": {
            "outputPath": "dist/DateMeUI",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.app.json",
            "aot": false, // here you have to change
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "src/styles.css"
            ],
            "scripts": []
          },

但是,我得到了'tsconfig。app。json',我在我的项目中找不到(也许你必须手动添加这个),通过这个文件,你可以设置“enableIvy”:false,因为其他人提到了它。tsconfig.app.json

我在创建共享指令时得到了这个错误。最初它进入了app模块的declarations数组(在我用cli运行命令后默认)。

我把它放到共享模块声明数组和导出数组中。现在,只要我从app.module.ts文件中删除它,问题就解决了。

问题是它是在两个模块(shared和app.module)中声明的。从app.module中移除,瞧!

这个问题将通过在package.json中添加下面的postinstall脚本来解决。

它将在npm安装后运行。

"scripts": {
   "postinstall": "ngcc"
}

添加以上代码后,运行npm install

当我升级到Angular 9+时,这是可行的

我在Ubuntu中也遇到过同样的问题,因为Angular应用目录拥有根权限。将所有权更改为本地用户为我解决了这个问题。

$ sudo -i
$ chown -R <username>:<group> <ANGULAR_APP>
$ exit 
$ cd <ANGULAR_APP>
$ ng serve

只需转到项目中的tsconfig.app.json,并从中删除所有内容

并复制下面的代码并粘贴它。它会解决你的问题:)

/* To learn more about this file see: https://angular.io/config/tsconfig. */
{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/app",
    "types": [],
  },

  "files": [
    "src/main.ts",
    "src/polyfills.ts"
  ],
  "include": [
    "src/**/*.d.ts"
  ],
  "angularCompilerOptions": {
    "enableIvy": false
  }
}