pem2jks.ts
import Jks from 'pem2jks.ts';
// Jks password (Not pem key's)
const password = '12345678';
// Now, `jks` is the buffer of JavaKeyStore
const jks = await Jks.fromPEM(cert, key).getJKS(0x02, passsword);
Anquanssl opensource family's first member, Convert between PEM(.key + .crt/.pem) and JavaKeyStore(.jks) with pure typescript(without keytool cli)
TypeScript