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import 'isomorphic-fetch';
import * as truffleConf from '../truffle.js';
export class RPC {
private host: string;
private port: number;
private id: number;
constructor() {
this.host = truffleConf.networks.development.host;
this.port = truffleConf.networks.development.port;
this.id = 0;
}
public async increaseTimeAsync(time: number) {
const method = 'evm_increaseTime';
const params = [time];
const payload = this.toPayload(method, params);
return this.sendAsync(payload);
}
public async mineBlockAsync() {
const method = 'evm_mine';
const payload = this.toPayload(method);
return this.sendAsync(payload);
}
private toPayload(method: string, params: any[] = []) {
const payload = JSON.stringify({
id: this.id,
method,
params,
});
this.id++;
return payload;
}
private async sendAsync(payload: string): Promise<any> {
const opts = {
method: 'POST',
body: payload,
};
const response = await fetch(`http://${this.host}:${this.port}`, opts);
const responsePayload = await response.json();
return responsePayload;
}
}
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