Spend from multiple address to the address about bitcore

[samyan]

Got it. Just added the typings of typescript for set array of keys to [sign method] as the original is obsolete:

original:

sign(privateKey: PrivateKey | string): this;

replaced:

sign(privateKey: PrivateKey | PrivateKey[] | string | string[]): this;

final code

const txHex: string = new Bitcore.Transaction()
	.from(utxos)
	.to(toAddress, spendAmount.toNumber())
	.change(toAddress)
	.fee(this.feeAmount.toNumber())
	.sign(fromSources.map((fromSources) => fromSources.privateKey))
	.serialize();