Cast undefined value to empty string - #417
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An undefined value in append will cause a confusing error:
`TypeError: Cannot read property 'name' of undefined`
Typically it's no problem to encode a form with undefined values into
a querystring. Using this package to send binary data, one must be
careful that all form values are defined.
Simple fix here is casting to empty string
To repro:
```js
var data = {};
var FormData = require('form-data');
var form = new FormData();
form.on('error', console.log);
form.append('woops', data.woops);
```
fijimunkii
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Jan 25, 2019
One must be careful that all formData values are not undefined
An undefined value in form-data append will cause a confusing error:
`TypeError: Cannot read property 'name' of undefined`
Simple fix here is casting to empty string
To repro:
```js
var formData = { woops: undefined };
var request = require('request');
request('https://github.com', { formData }, console.log)
```
Related PR to fix form-data form-data/form-data#417
This was referenced Jan 25, 2019
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An undefined value in append will cause a confusing error:
TypeError: Cannot read property 'name' of undefinedTypically it's no problem to encode a form with undefined values into a querystring. Using this package to send binary data, one must be careful that all form values are defined.
Simple fix here is casting to empty string
To repro: