Not drawing out an SVG path

Walkway looks amazing, is it supposed to work on any SVG path or shape?

When I call draw on a path I exported from Illustrator, the SVG does not draw but just appears immediately. The callback to draw() is still successfully called however.

I added the below path to example/index.html. All other shapes do the “walkway” correctly, but this path just appears immediately.

<svg version="1.1" id="branch" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
   width="576px" height="720px" viewBox="0 0 576 720" enable-background="new 0 0 576 720" xml:space="preserve">
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  </svg>

and the code I added to the JS:

var svg4 = new Walkway({
          selector: '#branch',
          duration: 500,
          easing: 'linear'
        });

        svg4.draw(function(){
          console.log('finished branch!');
        });

[ConnorAtherton]

Great answer @jzjzjzj, thanks for getting here before I did. @donpinkus, here is the sass styles for the demo on my website.

  svg {
    path, line {
      stroke: #fff;
      stroke-width: 2px;
    }

    path {
      fill: transparent;
    }
  }

I think exporting from illustrator and thinking this is a bug may become common enough that I should add some information in the README about it. I’ll do it later today.

[ConnorAtherton]

Again, thanks @jzjzjzj, the link to the doc is fantastic. I’ll close this in the next few hours.