WebSocketProvider balance changed event never fires

[safead]

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Describe the bug
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When using ethers.providers.WebSocketProvider as a provider, and setting up listener to catch a address balance change, the callback never fires

Reproduction steps
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create any wallet, setup an event listener

  wallet.provider.on(wallet.address, newBalance => {
    // this code never fires after balance is changed
  });

Environment:
Please include anything that may be useful in diagnosing the issue. Node vs Browser? Geth vs Parity vs Ganache? Third Party tools, like Hardhat? Mobile vs. Desktop?

Chrome, Geth (with WebSocket support)

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[ricmoo]

This is not a valid event type in v5. In v4 this was possible, but the method was not reliable, as it simply polled for balance changes on each block, but if an equal amount was sent and received within the same block, this would not trigger.

If you need this functionality, you can do the same; set up a handler for on("block", …) and store the previous balance. If it changes, trigger you custom logic.

Does that make sense?

[safead]

I did exaclty the same logic, as you advised before the issue ;)