ethers.js/lib.esm/providers/signer-noncemanager.js
2023-06-01 17:52:58 -04:00

74 lines
2.2 KiB
JavaScript

import { defineProperties } from "../utils/index.js";
import { AbstractSigner } from "./abstract-signer.js";
/**
* A **NonceManager** wraps another [[Signer]] and automatically manages
* the nonce, ensuring serialized and sequential nonces are used during
* transaction.
*/
export class NonceManager extends AbstractSigner {
/**
* The Signer being managed.
*/
signer;
#noncePromise;
#delta;
/**
* Creates a new **NonceManager** to manage %%signer%%.
*/
constructor(signer) {
super(signer.provider);
defineProperties(this, { signer });
this.#noncePromise = null;
this.#delta = 0;
}
async getAddress() {
return this.signer.getAddress();
}
connect(provider) {
return new NonceManager(this.signer.connect(provider));
}
async getNonce(blockTag) {
if (blockTag === "pending") {
if (this.#noncePromise == null) {
this.#noncePromise = super.getNonce("pending");
}
const delta = this.#delta;
return (await this.#noncePromise) + delta;
}
return super.getNonce(blockTag);
}
/**
* Manually increment the nonce. This may be useful when managng
* offline transactions.
*/
increment() {
this.#delta++;
}
/**
* Resets the nonce, causing the **NonceManager** to reload the current
* nonce from the blockchain on the next transaction.
*/
reset() {
this.#delta = 0;
this.#noncePromise = null;
}
async sendTransaction(tx) {
const noncePromise = this.getNonce("pending");
this.increment();
tx = await this.signer.populateTransaction(tx);
tx.nonce = await noncePromise;
// @TODO: Maybe handle interesting/recoverable errors?
// Like don't increment if the tx was certainly not sent
return await this.signer.sendTransaction(tx);
}
signTransaction(tx) {
return this.signer.signTransaction(tx);
}
signMessage(message) {
return this.signer.signMessage(message);
}
signTypedData(domain, types, value) {
return this.signer.signTypedData(domain, types, value);
}
}
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