ethers.js/packages/providers/src.ts/infura-provider.ts

"use strict";

import { Network } from "@ethersproject/networks";

import { Logger } from "@ethersproject/logger";
import { version } from "./_version";
const logger = new Logger(version);

import { UrlJsonRpcProvider } from "./url-json-rpc-provider";


const defaultProjectId = "84842078b09946638c03157f83405213"

export class InfuraProvider extends UrlJsonRpcProvider {
    get projectId(): string { return this.apiKey; }

    static getApiKey(apiKey: string): string {
        if (apiKey == null) { return defaultProjectId; }
        return apiKey;
    }

    static getUrl(network: Network, apiKey: string): string {
        let host = null;
        switch(network.name) {
            case "homestead":
                host = "mainnet.infura.io";
                break;
            case "ropsten":
                host = "ropsten.infura.io";
                break;
            case "rinkeby":
                host = "rinkeby.infura.io";
                break;
            case "kovan":
                host = "kovan.infura.io";
                break;
            case "goerli":
                host = "goerli.infura.io";
                break;
            default:
                logger.throwError("unsupported network", Logger.errors.INVALID_ARGUMENT, {
                    argument: "network",
                    value: network
                });
        }

        return "https:/" + "/" + host + "/v3/" + apiKey;
    }
}