Include this one trick to speed up event tracking

[fulldecent]

One trick that I use in production is not shown here.

Current code:

    const outputs = await this.contract.getPastEvents("Transfer", {
      fromBlock: 0,
      toBlock: "latest",
      topics: [
        sha3("Transfer(address,address,uint256)"),
        padLeft(owner, 64),
        null
      ]
    });

    const inputs = await this.contract.getPastEvents("Transfer", {
      fromBlock: 0,
      toBlock: "latest",
      topics: [
        sha3("Transfer(address,address,uint256)"),
        null,
        padLeft(owner, 64)
      ]
    });

If you change fromBlock to the contract deployment block then events come 2x–10x faster.