Hello! I discovered two bugs, causing crash of WCartesianChart.
Here I attach patches for these bugs: 1. x and y were passed to stream as raw double's. They were wrappered by Utils::round_str. 2. generic_double_to_str used to produce nan instead of NaN. After this, WCartesianChart works. Another crash, which I can't reproduced, was caused by this JS: ctx.lineTo(39.500,-0.00>); When I tried to reproduce it, it turned into ctx.lineTo(39.500,-nan); I thought that "-0.00>" is a result of error in "fast float->string converter". But I can't find error in it. And it should not be called for NaN. So there can be another bug related.
fillText.diff
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generic_double_to_str.diff
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