bytebuffer.js in Android WebView throws TypeError

[pawelrychlik]

Hi,

I'm using the browser flavor of bytebuffer.js (the one based on ArrayBuffers) in an app built on top of Apache Cordova (irrelevant, I believe), which uses Android WebView - basically a Chromium-based embedded browser.

I'm getting a TypeError: Cannot read property 'length' of null in:

var b = new ByteBuffer(0, ByteBuffer.LITTLE_ENDIAN);
b.ensureCapacity(100); // this throws

My WebView does have support for ArrayBuffers and Uint8Arrays. Are there any other requirements? Any ideas?

---

I'm using:

• bytebuffer 5.0.1 (bytebuffer.js or bytebuffer.min.js as described by https://github.com/dcodeIO/bytebuffer.js/blob/master/dist/README.md)
• Android 5.1.1, Android System WebView 54.0.x

If I try with bytebuffer-dataview.js, all is fine. The point is that I have limited CPU/RAM resources and tons of binary data to process, so I'm looking into ways how to shave off some seconds in the processing.

/Pawel

[dcodeIO]

When using https://github.com/dcodeIO/bytebuffer.js/blob/master/dist/bytebuffer.js , do you have a line reference for me? There are a couple of accesses to length.

[pawelrychlik]

Yep.

ByteBufferPrototype.resize  @   bytebuffer.js:2848
ByteBufferPrototype.ensureCapacity  @   bytebuffer.js:2609

[dcodeIO]

Hmm, no access to a length property there.

[pawelrychlik]

I just figured out that if I hack around dist/bytebuffer.js:77 and :2507 and let this.view = new Uint8Array(this.buffer); then it works fine for me (see the dirty pawelrychlik@262ee4c and don't pay attention to line endings). Now I guess I need to find my way through MetaScript to fix this properly.