Simply add ssl-checker as a dependency:
$ npm install ssl-checker --save # npm i -s ssl-checker
# Or if you prefer using yarn (https://yarnpkg.com/lang/en/)
$ yarn add ssl-checkerimport sslChecker from "ssl-checker";
const getSslDetails = async (hostname: string) =>
await sslChecker(hostname`ex. badssl.com`);| Option | Default | |
|---|---|---|
| method | HEAD | can be GET too |
| port | 443 | Your ssl entrypoint |
| agent | I dont know why but if you'd like provide agent id |
sslChecker("dyaa.me", { method: "GET", port: 443 }).then(console.info);{
"daysRemaining": 90,
"valid": true,
"validFrom": "issue date",
"validTo": "expiry date"
}Copylefted (c) 8008 
Dyaa Eldin Moustafa Licensed under the MIT license.
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