Angular 9 - Istanbul 尔测试覆盖率报告生成为空

Question

我收到一份空报告，它列出了文件，但没有填写百分比......
知道是什么原因造成的吗？

错误信息:

Handlebars:访问已被拒绝解析属性“声明”，因为它不是其父级的“自己的属性(property)”。

我的 package.json 文件:

"dependencies": {
    "@angular/animations": "^9.0.4",
    "@angular/cdk": "^9.1.0",
    "@angular/common": "^9.0.4",
    "@angular/compiler": "^9.0.4",
    "@angular/core": "^9.0.4",
    "@angular/forms": "^9.0.4",
    "@angular/platform-browser": "^9.0.4",
    "@angular/platform-browser-dynamic": "^9.0.4",
    "@angular/router": "^9.0.4",
    "@fullcalendar/core": "^4.4.0",
    "chart.js": "^2.9.2",
    "classlist.js": "^1.1.20150312",
    "core-js": "^2.5.7",
    "font-awesome": "^4.7.0",
    "karma-coverage": "^1.1.1",
    "karma-phantomjs-launcher": "^1.0.4",
    "moment-timezone": "^0.5.17",
    "ngx-clipboard": "^12.2.1",
    "primeicons": "^2.0.0",
    "primeng": "^9.0.0",
    "quill": "^1.3.7",
    "rxjs": "^6.5.3",
    "tslib": "^1.10.0",
    "web-animations-js": "^2.3.2",
    "xlsx": "^0.15.1",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.900.4",
    "@angular/cli": "^9.0.4",
    "@angular/compiler-cli": "^9.0.4",
    "@angular/language-service": "^9.0.4",
    "@types/jasmine": "~2.8.3",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "^12.11.1",
    "jasmine-core": "~2.8.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "^4.4.1",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "^1.4.3",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.4.1",
    "ts-node": "~7.0.1",
    "tslint": "~5.11.0",
    "typescript": "~3.7.5"

这是coverage/index.html文件中的结果

Answer 1

“karma-coverage-istanbul-reporter”包已经过时了。
在我执行以下 npm update 语句“ npm i -D karma-coverage-istanbul-reporter@2.1.1 ”后，它又开始工作了。