How to use the oidc-provider.createKeyStore function in oidc-provider

const fs = require('fs');
const { createKeyStore } = require('oidc-provider');
const certificateKeystore = createKeyStore();
const integrityKeystore = createKeyStore();
const logger = require('../lib/logger');

logger.info('Generating keys. This will take a few seconds...');
Promise.all([
  certificateKeystore.generate('RSA', 2048, {
    kid: 'sig-rs-0',
    use: 'sig',
  }),
  certificateKeystore.generate('RSA', 2048, {
    kid: 'enc-rs-0',
    use: 'enc',
  }),
  certificateKeystore.generate('EC', 'P-256', {
    kid: 'sig-ec2-0',
    use: 'sig',
  }),

const generateKeys = () => {
  const keystore = createKeyStore()

  return Promise.all([['RSA', 2048], ['EC', 'P-256'], ['EC', 'P-384'], ['EC', 'P-521']]
    .map(([v0, v1]) => keystore.generate(v0, v1)))
    .then(() => promisify(fs.writeFile)(
      path.resolve(__dirname, './keystore.json'),
      JSON.stringify(keystore.toJSON(true), null, 2)
    ))
}

const keystorePromise = (async () => {
  const keystore = OIDCProvider.createKeyStore();

  await Promise.all([
    keystore.generate('RSA', 2048, { alg: 'RS256', use: 'sig' }),
    keystore.generate('EC', 'P-256', { kid: 'enc-ec2-0', use: 'sig' })
  ]);

  return keystore;
})();

const Logger = require('@basaas/node-logger');
const fs = require('fs');
const path = require('path');
const { createKeyStore } = require('oidc-provider');
const conf = require('../../conf');

const keystore = createKeyStore();

const log = Logger.getLogger(`${conf.general.loggingNameSpace}/keystore`, {
    level: 'debug',
});

const keyStorePath = conf.oidc.keystorePath || path.join(__dirname, '../../../', 'keystore/keystore.json');

const generate = async (keySize) => {

    try {

        await Promise.all([
            keystore.generate('RSA', keySize, {
                kid: 'sig-rs-0',
                use: 'sig',
            }),

const fs = require('fs');
const { createKeyStore } = require('oidc-provider');
const certificateKeystore = createKeyStore();
const integrityKeystore = createKeyStore();
const logger = require('../lib/logger');

logger.info('Generating keys. This will take a few seconds...');
Promise.all([
  certificateKeystore.generate('RSA', 2048, {
    kid: 'sig-rs-0',
    use: 'sig',
  }),
  certificateKeystore.generate('RSA', 2048, {
    kid: 'enc-rs-0',
    use: 'enc',
  }),
  certificateKeystore.generate('EC', 'P-256', {
    kid: 'sig-ec2-0',
    use: 'sig',