Strange thing happens with .toNumber function. It works well for account balance, but not for rate / endTime. I can't understand why, because balance is BigNumber and rate property is BigNumber (you can see screenshot). Has anyone similar issue and how it needs to be solved? I use Truffle 4 + VS Code.

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1 Answer 1


Account balance returns BigNumber.

calls actually return a Promise.

If you do something like this, you should get the result in the console:

ico.rate.call().then(result => result.toNumber())
  • :) Thanks! I tried with this, but have made typo ico.rate.call().then(result = result.toNumber()). = instead of => :) What a relief...
    – Vanja Dev
    Feb 9, 2018 at 16:58

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