function secp256k1Expandimport { secp256k1Expand } from "https://dotland.deno.dev/x/polkadot@0.2.23/util-crypto/bundle.ts"; secp256k1Expand(publicKey: Uint8Array, onlyJs?: boolean): Uint8ArrayParameterspublicKey: Uint8ArrayoptionalonlyJs: booleanReturnsUint8Array