ethers.js/lib.commonjs/providers/subscriber-connection.js
2022-11-30 15:44:23 -05:00

46 lines
1.3 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.BlockConnectionSubscriber = void 0;
const index_js_1 = require("../utils/index.js");
/**
* @TODO
*
* @_docloc: api/providers/abstract-provider
*/
class BlockConnectionSubscriber {
#provider;
#blockNumber;
#filterId;
constructor(provider) {
this.#provider = provider;
this.#blockNumber = -2;
this.#filterId = null;
}
start() {
this.#filterId = this.#provider._subscribe(["newHeads"], (result) => {
const blockNumber = (0, index_js_1.getNumber)(result.number);
const initial = (this.#blockNumber === -2) ? blockNumber : (this.#blockNumber + 1);
for (let b = initial; b <= blockNumber; b++) {
this.#provider.emit("block", b);
}
this.#blockNumber = blockNumber;
});
}
stop() {
if (this.#filterId != null) {
this.#provider._unsubscribe(this.#filterId);
this.#filterId = null;
}
}
pause(dropWhilePaused) {
if (dropWhilePaused) {
this.#blockNumber = -2;
}
this.stop();
}
resume() {
this.start();
}
}
exports.BlockConnectionSubscriber = BlockConnectionSubscriber;
//# sourceMappingURL=subscriber-connection.js.map