Re: [web-nfc] Throw TypeError if mediaType for non mime records (#419)

I think* the goal is to make sure we get the same NDEFMessage content between what's pushed and what's read.

```js
const writer = new NDEFWriter();
await writer.push({
  records: [{
    'recordType': 'text',
    'mediaType': 'text/foo'
  }]
});

const reader = new NDEFReader();
reader.scan();
reader.onreading = ({ message }) => {
  const record = message.records[0];
  console.log(record.mediaType == 'text/foo'); //  <- false if TypeError is not thrown
});

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GitHub Notification of comment by beaufortfrancois
Please view or discuss this issue at https://github.com/w3c/web-nfc/pull/419#issuecomment-546966613 using your GitHub account

Received on Monday, 28 October 2019 14:16:59 UTC