wordpress-PurgeCSS-whitelist.js

const WordpressPurgeCSS = {
    whitelist: [
        "rtl",
        "home",
        "blog",
        "archive",
        "date",
        "error404",
        "logged-in",
        "admin-bar",
        "no-customize-support",
        "custom-background",
        "wp-custom-logo"
    ],
    whitelistPatterns: [
        /^search(-.*)?$/,
        /^(.*)-template(-.*)?$/,
        /^(.*)?-?single(-.*)?$/,
        /^postid-(.*)?$/,
        /^attachmentid-(.*)?$/,
        /^attachment(-.*)?$/,
        /^page(-.*)?$/,
        /^(post-type-)?archive(-.*)?$/,
        /^author(-.*)?$/,
        /^category(-.*)?$/,
        /^tag(-.*)?$/,
        /^tax-(.*)?$/,
        /^term-(.*)?$/,
        /^(.*)?-?paged(-.*)?$/
    ]
};

Thanks @bfiessinger, I will try it out. I ended up hunting through the code for a lot of the elements.

Please give me some link from where i get the information where i add this file in theme file or in root file
please tell me where i add this code {
import Purgecss from 'purgecss'
import purgecssWordpress from 'purgecss-with-wordpress'
const purgeCss = new Purgecss({
content: ['/*.html'],
css: ['/*.css'],
whitelist: purgecssWordpress.whitelist,
whitelistPatterns: purgecssWordpress.whitelistPatterns
})
const result = purgecss.purge()
}
how i run this code
please help me?
thanks in advance