function typesKnown.getSpecHasherimport { typesKnown } from "https://dotland.deno.dev/x/polkadot@0.2.45/mod.ts"; const { getSpecHasher } = typesKnown; getSpecHasher(unnamed 0: Registry,chainName: Text | string,specName: Text | string,): CodecHasher | nullParametersunnamed 0: RegistrychainName: Text | stringspecName: Text | stringReturnsCodecHasher | null