nodebb-plugin-ns-embed/client/acp/util/is-rule-valid.js

Embed media and rich content in posts: youtube, vimeo, twitch etc. All embeds are based on the rules. You are encouraged to build your own rules to embed everything what is embeddable.

export function isRuleValid(...fields) {
    for (let field of fields) {
        if (field === null || field === undefined || typeof field === 'string' && field.length === 0) {
            return false;
        }
    }

    return true;
}