Error when generating graph about viz-js

[LBierkandt]

I encountered the same error; perhaps another example helps pinning down the problem:

I get the error when trying to generate the following graph with dot:

digraph G{
    type="digraph";
    rankdir="TB";
    3->5[label="e1",color="#00cc00",constraint="false",fontcolor="#00cc00"]
    5->4[label="e2",color="#00cc00",constraint="false",fontcolor="#00cc00"]
    10->5[label="e3",color="#00cc00",constraint="false",fontcolor="#00cc00"]
    10->8[label="e6",color="#00cc00",constraint="false",fontcolor="#00cc00"]
    3->4[style="invis"]
    4->5[style="invis"]
    5->6[style="invis"]
    6->7[style="invis"]
    7->8[style="invis"]
    8->9[style="invis"]
    9->10[style="invis"]
    10->11[style="invis"]
    subgraph tokens{
        rank="same";
        3[label="t1",shape="box"]
        4[label="t2",shape="box"]
        5[label="t3",shape="box"]
        6[label="t4",shape="box"]
        7[label="t5",shape="box"]
        8[label="t6",shape="box"]
        9[label="t7",shape="box"]
        10[label="t8",shape="box"]
        11[label="t9",shape="box"]
    }
}

The stacktrace:
InternalError: uncaught exception: abort() at jsStackTrace@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:5:20800 stackTrace@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:5:20983 abort@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:28:5424 _abort@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:5:603385 O4@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:21:14501 zf@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:11:124669 sf@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:11:120869 gF@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:9:172924 ec@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:11:882 ccallFunc@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:5:8075 render@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:62:25 Viz@http://mdaines.github.io/viz.js/bower_components/viz.js/viz.js:44:14 onmessage@http://mdaines.github.io/viz.js/worker.js:4:16 If this abort() is unexpected, build with -s ASSERTIONS=1 which can give more information.

Graph generation works as soon as you remove one of the visible edges.

[LBierkandt]

This is actually an instance of the bug reported in #65.

[mdaines]

Addressed in 2257a40.