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Error thrown from EtherscanProvider.call via FallbackProvider not catchable

See original GitHub issue

When the FallbackProvider.call invokes EtherscanProvider.call, the error thrown (https://github.com/ethers-io/ethers.js/blob/master/providers/etherscan-provider.js#L209) isn’t catchable because the setTimeout has the error thrown on a different async stack: https://github.com/ethers-io/ethers.js/blob/master/providers/fallback-provider.js#L103.

If EtherscanProvider.call instead returns Promise.reject(...), it works as expected.

Issue Analytics

State:
Created 4 years ago
Comments:11 (8 by maintainers)

Top GitHub Comments

1reaction

ricmoocommented, Mar 17, 2020

This has been published to 4.0.46. Try it out and let me know if you have any problems. 😃

1reaction

ricmoocommented, Mar 13, 2020

Yeah, exactly what I was trying… It has to fail in a weird way and not on the first run (otherwise it fails in that async loop). It’s ok, I just hacked in some things directly to force it to fail. 😃

The fixes are in, but I’m looking through for other low-hanging fruit, since it takes about an hour for the tests to run and do all the admin tasks to cut a release. I’ll update this ticket when it is published to npm.

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