devongovett / blob-stream Goto Github PK

A Node-style writable stream for HTML5 Blobs

License: MIT License

JavaScript 100.00%

blob-stream's Introduction

blob-stream

A Node-style writable stream for HTML5 Blobs, mostly useful in Browserify. Allows you to take the output of any Node stream, and turn it into a Blob or Blob URL for opening in the browser, uploading to a server, etc.

If you don't want to use Browserify, you can also download a prebuilt version of the library.

Example

var blobStream = require('blob-stream');

someStream
  .pipe(blobStream())
  .on('finish', function() {
    // get a blob
    var blob = this.toBlob();
    
    // or get a blob URL
    var url = this.toBlobURL();
    window.open(url);
  });

License

MIT

blob-stream's People

Contributors

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blob-stream's Issues

How do i use the pre-built lib?

Apparently

var blobStream = require('blob-stream');

does not work if one wants to use the pre-built lib (without browserify).

But

BlobStream()

is also not defined.

How do I use the pre-built lib?

Cheers

`URL` is undefined

This line dos not appear to work in Node v6 (have not tested other versions)

var URL = global.URL || global.webkitURL || global.mozURL;

Error: spawn Xvfb ENOENT, tests fail

I cloned, installed browserify and testling (might want that added to devdependencies?) and got this when running tests:

% npm test                                  

> [email protected] test /mnt/hdd/home/me/prj/web/blob-stream
> browserify test/index.js | testling

events.js:182
      throw er; // Unhandled 'error' event
      ^

Error: spawn Xvfb ENOENT
    at _errnoException (util.js:1041:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:192:19)
    at onErrorNT (internal/child_process.js:374:16)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)
npm ERR! Test failed.  See above for more details.

Node 8.4.0, npm 5.3.0.

Provide browser-specific version

Recently create-react-app version 5 was released, which internally switched from webpack 4 to webpack 5. Webpack 4 used to set up polyfils for the stream and the utils package. Webpack 5 stopped this automatically polyfilling. Since create-react-app v5 unfortunately does not provided an easy way set configure webpack, the easiest way forward might be to provide a browser specific version of this package.

Would there be any interest in this change? If so I'd be happy to work on it.

TypeError: Blob is not a constructor

I'm getting the following error

\blob-stream\index.js:33
    this._blob = new Blob(this._chunks, {
                 ^

TypeError: Blob is not a constructor
    at BlobStream.toBlob (H:\Work\projects\node\subzero\node_modules\blob-stream\index.js:33:18)
    at BlobStream.toBlobURL (H:\Work\projects\node\subzero\node_modules\blob-stream\index.js:48:35)
    at BlobStream.stream.on (H:\Work\projects\node\subzero\routes\cpanel\orderadmin.router.js:185:32)
    at BlobStream.emit (events.js:203:15)
    at finishMaybe (_stream_writable.js:646:14)
    at afterWrite (_stream_writable.js:486:3)
    at process._tickCallback (internal/process/next_tick.js:63:19)

This is the code

const PDFDocument = require('pdfkit');
const blobStream  = require('blob-stream');
let doc = new PDFDocument();
const stream = doc.pipe(blobStream());
doc.text("HOLA MUNDO!!");
doc.end();
stream.on('finish', ()=>{
    const url = stream.toBlobURL('application/pdf');
    res.send(url);
})

devongovett / blob-stream Goto Github PK

blob-stream's Introduction

blob-stream

Example

License

blob-stream's People

Contributors

Stargazers

Watchers

Forkers

blob-stream's Issues

How do i use the pre-built lib?

`URL` is undefined

Error: spawn Xvfb ENOENT, tests fail

Provide browser-specific version

TypeError: Blob is not a constructor

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