BUG: v0.19.5 Breaks headless editor.setComponents(): "Uncaught (in promise) ReferenceError: window is not defined"

I'm unable to reproduce this on JSFiddle, but that sort of makes sense.
#4373 has introduced a bug in editor.setComponents():
"Uncaught (in promise) ReferenceError: window is not defined"

This is when converting an svg to base64. Quick fix in src/utils/mixins:

    export const buildBase64UrlFromSvg = (svg: string) => {
      if (svg && svg.substr(0, 4) === '<svg') {
        // remove window.btoa
        return `data:image/svg+xml;base64,${Buffer.from(svg, 'utf8').toString('base64')}`;
      }
      return svg;
    };

Replaces the window.btoa with Buffer.from().

I am unable to create a PR on work machine, will do later but putting this up for any others searching.

All the best!




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