How to add new plugins, such as 'karma-ie-launcher' ?

[changhe-fu]

When I use ‘vue-cli-plugin-unit-karma’, how do I add a new plugin, such as ‘karma-ie-launcher’？

This is the configuration I added in vue.config.js:
"pluginOptions": {
"karma": {
"browsers": [
"Chrome",
"Firefox",
"IE"
]
}
}