@polkadot/util-crypto/key/fromPath.js

// Copyright 2017-2022 @polkadot/util-crypto authors & contributors
// SPDX-License-Identifier: Apache-2.0
import { keyHdkdEcdsa } from "./hdkdEcdsa.js";
import { keyHdkdEd25519 } from "./hdkdEd25519.js";
import { keyHdkdSr25519 } from "./hdkdSr25519.js";
const generators = {
  ecdsa: keyHdkdEcdsa,
  ed25519: keyHdkdEd25519,
  // FIXME This is Substrate-compatible, not Ethereum-compatible
  ethereum: keyHdkdEcdsa,
  sr25519: keyHdkdSr25519
};
export function keyFromPath(pair, path, type) {
  const keyHdkd = generators[type];
  let result = pair;

  for (const junction of path) {
    result = keyHdkd(result, junction);
  }

  return result;
}