I am deploying a react app that uses some Solana packages and the app is breaking with the following type error:

Uncaught TypeError: Cannot convert a BigInt value to a number
    at Math.pow (<anonymous>)
    at 8953 (main.78866a30.js:2:547022)
    at __webpack_require__ (main.78866a30.js:2:1792446)
    at main.78866a30.js:2:2149776
    at main.78866a30.js:2:2514541
    at main.78866a30.js:2:2514545

I spent a little bit of time looking at the compiled javascript and found some instances of Math.pow that could cause this error, like here for example:

  C = BigInt(Math.pow(2, 32) - 1),
          P = BigInt(32);
        function T(e) {
          var t =
            arguments.length > 1 && void 0 !== arguments[1] && arguments[1];
          return t
            ? { h: Number(e & C), l: Number((e >> P) & C) }
            : { h: 0 | Number((e >> P) & C), l: 0 | Number(e & C) };

I'm assuming it's a Solana package because the surrounding code is hashing and digest functions. Is there any way to figure out which package this code is coming from? Or any other quick fixes?

2 Answers 2


add a


in your src folder. There add


That worked for me.


This sounds like you are either using too big of a bigint value or you are passing a bigint where you meant to pass a number. This is not common so check your types and convert to typescript if possible to catch these kind of errors.

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