20 lines
743 B
TypeScript
20 lines
743 B
TypeScript
import { sign, XRPL_Account } from "xrpl-accountlib"
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import state from "../state"
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// Mutate tx object with network estimated fee value
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const estimateFee = async (tx: Record<string, unknown>, keypair: XRPL_Account): Promise<null | { base_fee: string, median_fee: string; minimum_fee: string; open_ledger_fee: string; }> => {
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const copyTx = JSON.parse(JSON.stringify(tx))
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delete copyTx['SigningPubKey']
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const { signedTransaction } = sign(copyTx, keypair);
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try {
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const res = await state.client?.send({ command: 'fee', tx_blob: signedTransaction })
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if (res && res.drops) {
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return tx['Fee'] = res.drops.base_fee;
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}
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return null
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} catch (err) {
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throw Error('Cannot estimate fee')
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}
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}
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export default estimateFee |