@shopify/shopify-api/lib/auth/oauth/nonce.ts

Shopify API Library for Node - accelerate development with support for authentication, graphql proxy, webhooks

export type Nonce = () => string;

export function nonce(): string {
  const length = 15;

  const bytes = crypto.getRandomValues(new Uint8Array(length));

  const nonce = bytes
    .map((byte: number) => {
      return byte % 10;
    })
    .join('');

  return nonce;
}