Numbers without text don't render when using tex2svg

[alcastaneda]

Running node -r esm tex2svg 408 and node -r esm tex2svg -30 generates:

<svg style="vertical-align: 0;" xmlns="http://www.w3.org/2000/svg" width="0.036ex" height="0.036ex" role="img" focusable="false" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><style>svg a{fill:blue;stroke:blue}[data-mml-node="merror"]>g{fill:red;stroke:red}[data-mml-node="merror"]>rect[data-background]{fill:yellow;stroke:none}[data-frame],[data-line]{stroke-width:70px;fill:none}.mjx-dashed{stroke-dasharray:140}.mjx-dotted{stroke-linecap:round;stroke-dasharray:0,140}use[data-c]{stroke-width:3px}</style></defs><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="scale(1,-1)"><g data-mml-node="math"></g></g></svg>

Which appears to be an empty svg

[dpvc]

Most peculiar. I will have to look into it further.

[dpvc]

OK, it turns out that the yargs command argument parsing turns arguments that are numbers into javascript numbers rather than strings, since MathJax.tex2svgPromise() expects a string, then it is passed a number it doesn't parse properly. So one solution would be to change argv._[0] to String(argv._[0]) in the tex2svg command file. I'm not sure which tex2svg you are using (there is one in most of the directories), but you should be able to fix the one you are using with that change.

[alcastaneda]

@dpvc that worked! thank you!