before html file generated by htmlwebpackplugin, insert a custom inline script into the html file's header tag, useful in dev environment where mock data is required.
usage:
npm i -D config_injection_plugin
const ConfigInject = require('config_injection_plugin');
plugins: [
...
new ConfigInject({
$config:"your js script file's relative path"
}),
...
]this will inject the specified file's evaled result into the generated html's header tag