Function keyExpressionBIP32

keyExpressionBIP32(
    params: {
        masterNode: BIP32InterfaceLike | ScureHDKeyLike;
        originPath: string;
        change?: number;
        index?: number | "*";
        keyPath?: string;
        isPublic?: boolean;
    },
): string
Constructs a BIP32 key expression string from its constituent components.

This function essentially performs the reverse operation of KeyExpressionParser. For detailed explanations and examples of the terms used here, refer to KeyExpressionParser.
Parameters
- params: {
      masterNode: BIP32InterfaceLike | ScureHDKeyLike;
      originPath: string;
      change?: number;
      index?: number | "*";
      keyPath?: string;
      isPublic?: boolean;
  }
  The parameters object.
  - masterNode: BIP32InterfaceLike | ScureHDKeyLike
    Root HD node. Pass either:
    
    a bitcoinjs BIP32 node, or
    
    a scure HDKey.
  - originPath: string
    Origin path from master, e.g. "/84'/0'/0'".
  - Optionalchange?: number
    Branch index (0 receive, 1 change).
  - Optionalindex?: number | "*"
    Address index or * for ranged descriptors.
  - OptionalkeyPath?: string
    Full suffix path (/change/index) alternative to change + index.
  - OptionalisPublic?: boolean
    Compute an xpub or xprv
    
    Default
    true
Returns string
Descriptor key expression (e.g. [f23f9fd2/84'/0'/0']xpub.../0/5).
Example
```
import * as ecc from '@bitcoinerlab/secp256k1';
import { BIP32Factory } from 'bip32';
import { keyExpressionBIP32 } from '@bitcoinerlab/descriptors';

const BIP32 = BIP32Factory(ecc);
const masterNode = BIP32.fromSeed(seedBytes);
const keyExp = keyExpressionBIP32({
  masterNode,
  originPath: "/84'/0'/0'",
  change: 0,
  index: 5
});
```
Example
```
import { HDKey } from '@scure/bip32';
import { keyExpressionBIP32 } from '@bitcoinerlab/descriptors';

const masterNode = HDKey.fromMasterSeed(seedBytes);
const keyExp = keyExpressionBIP32({
  masterNode,
  originPath: "/84'/0'/0'",
  keyPath: '/0/*'
});
```
- Defined in keyExpressions.ts:307