karma-polyfill
Loads polyfills from https://polyfill.io/ before running tests.
Use
Install the plugin with npm
:
npm install karma-polyfill --save-dev
Configure Karma to load the plugin as a framework and specify the features you need polyfilled:
module { config;};
The above configuration will load the https://cdn.polyfill.io/v2/polyfill.min.js?features=Promise,fetch script before your tests run.
Note that if you've included a plugins
section in your Karma config, you will need to add a karma-polyfill
entry to your plugins array.