.slice is not a function about ndef-js HOT 3 CLOSED

decodeMessage is expecting an array of bytes, which should have a slice function. If you're passing in a Uint8Array or Buffer it'll probably fail.

from ndef-js.

I tried to run readTag example from this library as is. But it failed.

var spawn = require('child_process').spawn,
    ndef = require('../index'),
    fs = require('fs'),
    mifareClassic = require('../lib/mifare-classic'),
    fileName = 'foo.mfd';
        
function printNdefInfo() {
    buffer = fs.readFileSync(fileName);
    ndefBuffer = mifareClassic.getNdefData(buffer);
    console.log(ndefBuffer);

    message = ndef.decodeMessage(ndefBuffer.toJSON());
    console.log(message);

(...)

When I have modified this example and I passed data to decoding, it worked.
message = ndef.decodeMessage(ndefBuffer.toJSON().data);

But I think there is some problem with library and/or Node.JS version because in raw version of examples were errors.

from ndef-js.

@greggyPL message = ndef.decodeMessage(ndefBuffer.toJSON().data); works because the original code was written for Node v0.8. Node v0.10 changed the JSON for Buffer. I modified ndef.decodeMessage to take a Buffer so this is unnecessary.

from ndef-js.