@mocanvas/mocanvas · function
declare function sanitizeSvg(svgText: string): string | nullSanitize an SVG document, returning the cleaned markup — or null when the
input was not SVG at all, or when nothing survived.
null rather than an empty string on purpose: a caller has to be able to
tell "there was nothing to draw" from "here is an empty drawing", and the
former should not create a shape.
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