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FormData undefined is not a function #329

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cesar-medina-25 opened this issue Aug 2, 2021 · 0 comments
Open

FormData undefined is not a function #329

cesar-medina-25 opened this issue Aug 2, 2021 · 0 comments

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@cesar-medina-25
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cesar-medina-25 commented Aug 2, 2021

Hello!! I'm doing some testing with MirageJS and React Native, but it is crashing using FormData in requests.
Specifically in the next block of code (pretender.js line 1569) added in this PR #320

if (body instanceof FormData) {
  body.forEach(function (value) {
    if (value instanceof File) {
          totalSize += value.size;
    }
    else {
          totalSize += value.length;
    }
  });
}

Using console log with body returns these values:

{"_parts": [["grant_type", "password"], ["username", "[email protected]"], ["password", "123456"]]}

Then the app returns an error because body doesn't have a forEach function but it is an instanceof FormData:

TypeError: undefined is not a function (near '...body.forEach...')
scheduleProgressEvent@http://localhost:8081/index.bundle?platform=ios&dev=true&minify=false:131702:25

Versions:

Pretender: 3.4.6
Axios: 0.21.1
MirageJS: 0.1.41
React Native: 0.63.4
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