Can't update reader hints instance during scanning

[Hieu Nguyen]

Hi zxingJS team. I'm very appreciated your work to port it and I'm enjoyed you guys work very handy for my projects. But seem like I faced to this bug or using it wrong.

Describe the bug

• I tried to update reader hints using code reader instance of hints setter but seem like it's not updated for new hints for reading.

To Reproduce
Steps to reproduce the behavior:

1. Init reader using const codeReader = new BrowserMultiFormatReader(qrcodeHints, 1000)
2. Scanning using codeReader.decodeFromStream() with QR code.
3. Updated hints to ean 1D hints

const hints = new Map()
hints.set(DecodeHintType.POSSIBLE_FORMATS, eanHints)
codeReader.hints = hints

Expected behavior

• The reader hints should updated correspondingly and it able to read eanHints only

Thanks you in advance!

[Hieu Nguyen]

I'm using below work around in order to achieve it

• Reset the reader using codeReader.reset() and reinit it but's cause flashing on video view feed

[github-actions]

Stale issue message