import hots-environment to frameworks met an error

[wenytang-ms]

Hi, thanks for your effort.
but when I add the host environment to frameworks, I got an error
28 04 2021 11:13:55.774:ERROR [karma-server]: Server start failed on port 9876: Error: No provider for "framework:host-environment"! (Resolving: framework:host-environment)

and my karma.config.js file is as follow

// https://github.com/karma-runner/karma-chrome-launcher
process.env.CHROME_BIN = require("puppeteer").executablePath();
require("dotenv").config();

module.exports = function(config) {
config.set({
// base path that will be used to resolve all patterns (eg. files, exclude)
basePath: "./",

// frameworks to use
// available frameworks: https://npmjs.org/browse/keyword/karma-adapter
frameworks: ["mocha", "host-environment"],

plugins: [
  "karma-mocha",
  "karma-mocha-reporter",
  "karma-chrome-launcher",
  "karma-edge-launcher",
  "karma-firefox-launcher",
  "karma-ie-launcher",
  "karma-env-preprocessor",
  "karma-coverage",
  "karma-remap-istanbul",
  "karma-junit-reporter"
],