Error when parsing Inline SVG

[bencripps]

I believe PurifyCSS is having an issue parsing CSS, where we use an data:image/svg as the background URL. I've run it through the CSS validator, and it looks like the CSS is valid, however, I receive the following error when using this webpack plugin. When I remove the SVG from our code, the plugin works as expected.

If I add

 styleExtensions: ['.scss'],

The problem goes away, but the CSS file isn't reduced at all.

Here is my implementation, in my webpack.config:

config.plugins.push(
    new PurifyCSSPlugin({
        paths: glob.sync(path.join(__dirname, '*.html')),
    })
);

Here is the raw CSS being built:

.b-Logo{box-sizing:border-box;display:inline-block}[dir] .b-Logo{background-repeat:no-repeat}.b-Logo--wordmark--lg{width:160px;height:40px}.b-Logo--wordmark--md{width:120px;height:30px}.b-Logo--wordmark--sm{width:80px;height:20px}.b-Logo--lettermark--lg{width:40px;height:40px}.b-Logo--lettermark--md{width:30px;height:30px}.b-Logo--lettermark--sm{width:20px;height:20px}[dir] .b-Logo--wordmark{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' viewBox='0 0 320 80'%3E%3Cpath d='M287.31 13.4a5.24 5.24 0 0 0-4.22-1.76 5 5 0 0 0-4.22 1.92 9 9 0 0 0-1.49 5.59V37a24.49 24.49 0 0 0-7-5.52 16.88 16.88 0 0 0-5.2-1.56 25.92 25.92 0 0 0-3.6-.24A18.43 18.43 0 0 0 247.06 36c-3.67 4.23-5.51 10.09-5.51 17.65A33.74 33.74 0 0 0 243 63.6a24 24 0 0 0 4.06 8 19.15 19.15 0 0 0 6.41 5.24 17.87 17.87 0 0 0 8 1.84 19.14 19.14 0 0 0 3.75-.35 14.73 14.73 0 0 0 2.27-.55 19.32 19.32 0 0 0 5.12-2.66 30.13 30.13 0 0 0 4.81-4.54v1.17a7.52 7.52 0 0 0 1.6 5.13 5.66 5.66 0 0 0 8.21.08 7.48 7.48 0 0 0 1.8-5.17V18.48a7.76 7.76 0 0 0-1.72-5.08zm-12.15 49.22a11.56 11.56 0 0 1-4.18 5 10.7 10.7 0 0 1-5.78 1.64 10.45 10.45 0 0 1-5.78-1.72 11.84 11.84 0 0 1-4.18-5.16 20.67 20.67 0 0 1-1.52-8.37 20.86 20.86 0 0 1 1.45-8.14 12 12 0 0 1 4-5.4 9.68 9.68 0 0 1 5.94-1.88h.12a9.93 9.93 0 0 1 5.74 1.84 12.56 12.56 0 0 1 4.22 5.28 19.89 19.89 0 0 1 1.56 8.29 20.36 20.36 0 0 1-1.59 8.62zm-37.9.51a4.38 4.38 0 0 0-3-1 4 4 0 0 0-2.62.78c-1.52 1.41-2.74 2.54-3.67 3.36a33.69 33.69 0 0 1-3.13 2.31 12.3 12.3 0 0 1-3.44 1.57 14 14 0 0 1-3.95.51 6.6 6.6 0 0 1-.9 0 10.72 10.72 0 0 1-5-1.57 11.55 11.55 0 0 1-4.3-4.66A17.22 17.22 0 0 1 205.6 57h23.54c3.17 0 5.65-.34 7.37-1.2s2.62-2.9 2.62-5.91a20.41 20.41 0 0 0-2.54-9.66 19.64 19.64 0 0 0-7.59-7.74 23.28 23.28 0 0 0-12.12-3h-.35a27.4 27.4 0 0 0-9.53 1.75 21.07 21.07 0 0 0-7.54 5 22.48 22.48 0 0 0-4.61 7.86 30.26 30.26 0 0 0-1.6 9.94c0 7.59 2.15 13.54 6.45 18 4.06 4.19 9.69 6.38 16.84 6.61h1.25a27.65 27.65 0 0 0 9-1.33 22.39 22.39 0 0 0 6.48-3.32 16 16 0 0 0 3.87-4.23 7.8 7.8 0 0 0 1.29-3.8 3.58 3.58 0 0 0-1.17-2.84zm-28.14-22.4a9.58 9.58 0 0 1 7.39-3.09 9.94 9.94 0 0 1 7.58 3.05c1.91 2 3 5.25 3.32 9.4H205.6c.4-4.09 1.57-7.29 3.52-9.36zM189 63.13a4.38 4.38 0 0 0-3-1 4 4 0 0 0-2.62.78c-1.52 1.41-2.74 2.54-3.67 3.36a33.69 33.69 0 0 1-3.13 2.31 12.3 12.3 0 0 1-3.44 1.57 14 14 0 0 1-3.95.51 6.6 6.6 0 0 1-.9 0 10.72 10.72 0 0 1-5-1.57 11.55 11.55 0 0 1-4.3-4.66 17.22 17.22 0 0 1-1.64-7.43h23.54c3.17 0 5.65-.34 7.37-1.2s2.62-2.9 2.62-5.91a20.41 20.41 0 0 0-2.54-9.66 19.64 19.64 0 0 0-7.58-7.71 23.28 23.28 0 0 0-12.12-3h-.35a27.4 27.4 0 0 0-9.54 1.72 21.07 21.07 0 0 0-7.54 5 22.48 22.48 0 0 0-4.61 7.86 30.26 30.26 0 0 0-1.6 9.94c0 7.59 2.15 13.54 6.45 18 4.06 4.19 9.69 6.38 16.84 6.61h1.25a27.65 27.65 0 0 0 9-1.33A22.39 22.39 0 0 0 185 74a16 16 0 0 0 3.87-4.23 7.8 7.8 0 0 0 1.29-3.8 3.58 3.58 0 0 0-1.16-2.84zm-28.14-22.4a9.58 9.58 0 0 1 7.39-3.09 9.94 9.94 0 0 1 7.58 3.05c1.91 2 3 5.25 3.32 9.4h-21.8c.39-4.09 1.56-7.29 3.52-9.36zm-21.65-27.17A5.26 5.26 0 0 0 135 11.8a5 5 0 0 0-4.22 1.92c-1.31 1.52-1.65 3.24-1.65 5.7V37.2a23.57 23.57 0 0 0-6.62-5.57 17.21 17.21 0 0 0-5.2-1.56 25.92 25.92 0 0 0-3.6-.24 18.38 18.38 0 0 0-14.54 6.34c-3.63 4.23-5.47 10.1-5.47 17.65a35.11 35.11 0 0 0 1.37 9.94 24.13 24.13 0 0 0 4.1 8 19.15 19.15 0 0 0 6.41 5.24 17.87 17.87 0 0 0 8 1.84 19.72 19.72 0 0 0 3.75-.35 14.67 14.67 0 0 0 2.27-.55 19.32 19.32 0 0 0 5.12-2.66 31.93 31.93 0 0 0 4.81-4.54v1.17a7.52 7.52 0 0 0 1.6 5.13 5.62 5.62 0 0 0 8.17.08 7.53 7.53 0 0 0 1.56-5.2V18.68a7.87 7.87 0 0 0-1.65-5.12zm-11.9 49.22a11.37 11.37 0 0 1-4.22 5 10.57 10.57 0 0 1-5.74 1.64 10.44 10.44 0 0 1-5.78-1.72 11.58 11.58 0 0 1-4.18-5.16 20.68 20.68 0 0 1-1.52-8.37 21.64 21.64 0 0 1 1.41-8.14 12.08 12.08 0 0 1 4.06-5.4 9.57 9.57 0 0 1 5.9-1.88h.16a9.72 9.72 0 0 1 5.6 1.88 12.35 12.35 0 0 1 4.26 5.28 20.52 20.52 0 0 1 1.56 8.29 21 21 0 0 1-1.51 8.58zM26 71.27v-28.8c.82.08 1.6.12 2.42.12A20.27 20.27 0 0 0 39 39.65v31.62c0 2.7-.49 4.7-1.71 6a6.16 6.16 0 0 1-4.77 2 6 6 0 0 1-4.69-2c-1.21-1.33-1.84-3.33-1.84-6zm-.12-69C34-.69 43.28-.53 50.23 5.5a11.79 11.79 0 0 1 3.36 4.5c.7 2.27-2.46-.23-2.89-.55a30.92 30.92 0 0 0-7.07-3.6C29.95 1.66 17 9.29 9 21.15A64.11 64.11 0 0 0 1.61 38a9.59 9.59 0 0 1-.7 2.11c-.35.67-.16-1.8-.16-1.88a52 52 0 0 1 1.41-7.36C5.87 17.94 14.08 7.18 25.88 2.25zm10.59 32A9.92 9.92 0 1 1 40.81 21a9.88 9.88 0 0 1-4.34 13.29zm20.87 2.53v1.5a21.48 21.48 0 0 1 6.9-6.13 18.79 18.79 0 0 1 8.65-1.94 17.35 17.35 0 0 1 8.45 2.06 13 13 0 0 1 5.55 5.82 13.56 13.56 0 0 1 1.55 4.78 48.84 48.84 0 0 1 .35 6.48v22.24A7.92 7.92 0 0 1 87.13 77a5.41 5.41 0 0 1-4.27 1.86A5.48 5.48 0 0 1 78.52 77a7.81 7.81 0 0 1-1.62-5.4V51.7c0-4-.59-7-1.68-9.09s-3.3-3.14-6.55-3.14a9.84 9.84 0 0 0-5.82 1.9A11 11 0 0 0 59 46.65c-.58 1.79-.91 5.09-.91 10v14.96c0 2.45-.52 4.23-1.65 5.47a5.68 5.68 0 0 1-4.34 1.82 5.38 5.38 0 0 1-4.29-1.9 7.82 7.82 0 0 1-1.67-5.4V37c0-2.29.5-4 1.51-5.09a5.1 5.1 0 0 1 4.07-1.71 5.41 5.41 0 0 1 2.83.74 5.29 5.29 0 0 1 2.06 2.25 8 8 0 0 1 .74 3.64z' fill='%232164f3' fill-rule='evenodd'/%3E%3C/svg%3E")}[dir] .b-Logo--lettermark{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' viewBox='0 0 120 120'%3E%3Cdefs%3E%3Cpath id='icl-Logo-SVGID_1_' d='M52.2 9c11-4 23.6-3.8 33.1 4.4 1.8 1.7 3.8 3.7 4.6 6.2 1 3.1-3.3-.3-3.9-.7-3.1-2-6.2-3.7-9.6-4.9-18.6-5.8-36.2 4.6-47.1 20.8-4.6 7.1-7.5 14.7-10 22.9-.3.9-.5 2.1-1 2.9-.5.9-.2-2.5-.2-2.6.4-3.4 1.1-6.7 1.9-10 5-17.6 16.2-32.3 32.2-39zm14.1 42c-6.9 3.5-15.3.8-18.8-6.1-3.5-7-.7-15.4 6.2-18.9 6.9-3.5 15.3-.8 18.8 6.1 3.5 7 .7 15.4-6.2 18.9zM50 103.2V62.5c1.2.1 2.4.2 3.7.2 6 0 11.5-1.5 16.3-4.1v44.7c0 3.8-1 6.6-2.8 8.5-1.8 1.9-4.3 2.8-7.3 2.8-2.9 0-5.2-.9-7.1-2.9-1.8-2-2.8-4.8-2.8-8.5z' /%3E%3C/defs%3E%3CclipPath id='icl-Logo-SVGID_2_'%3E%3Cuse xlink:href='%23icl-Logo-SVGID_1_' overflow='visible' /%3E%3C/clipPath%3E%3Cpath style='clip-path: url(%23icl-Logo-SVGID_2_); fill: %232164F3;' d='M-2-13.5h112v148H-2z' /%3E%3C/svg%3E")}[dir] .b-Logo--wordmark--inverted{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' viewBox='0 0 320 80'%3E%3Cpath d='M287.31 13.4a5.24 5.24 0 0 0-4.22-1.76 5 5 0 0 0-4.22 1.92 9 9 0 0 0-1.49 5.59V37a24.49 24.49 0 0 0-7-5.52 16.88 16.88 0 0 0-5.2-1.56 25.92 25.92 0 0 0-3.6-.24A18.43 18.43 0 0 0 247.06 36c-3.67 4.23-5.51 10.09-5.51 17.65A33.74 33.74 0 0 0 243 63.6a24 24 0 0 0 4.06 8 19.15 19.15 0 0 0 6.41 5.24 17.87 17.87 0 0 0 8 1.84 19.14 19.14 0 0 0 3.75-.35 14.73 14.73 0 0 0 2.27-.55 19.32 19.32 0 0 0 5.12-2.66 30.13 30.13 0 0 0 4.81-4.54v1.17a7.52 7.52 0 0 0 1.6 5.13 5.66 5.66 0 0 0 8.21.08 7.48 7.48 0 0 0 1.8-5.17V18.48a7.76 7.76 0 0 0-1.72-5.08zm-12.15 49.22a11.56 11.56 0 0 1-4.18 5 10.7 10.7 0 0 1-5.78 1.64 10.45 10.45 0 0 1-5.78-1.72 11.84 11.84 0 0 1-4.18-5.16 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1.57-7.29 3.52-9.36zM189 63.13a4.38 4.38 0 0 0-3-1 4 4 0 0 0-2.62.78c-1.52 1.41-2.74 2.54-3.67 3.36a33.69 33.69 0 0 1-3.13 2.31 12.3 12.3 0 0 1-3.44 1.57 14 14 0 0 1-3.95.51 6.6 6.6 0 0 1-.9 0 10.72 10.72 0 0 1-5-1.57 11.55 11.55 0 0 1-4.3-4.66 17.22 17.22 0 0 1-1.64-7.43h23.54c3.17 0 5.65-.34 7.37-1.2s2.62-2.9 2.62-5.91a20.41 20.41 0 0 0-2.54-9.66 19.64 19.64 0 0 0-7.58-7.71 23.28 23.28 0 0 0-12.12-3h-.35a27.4 27.4 0 0 0-9.54 1.72 21.07 21.07 0 0 0-7.54 5 22.48 22.48 0 0 0-4.61 7.86 30.26 30.26 0 0 0-1.6 9.94c0 7.59 2.15 13.54 6.45 18 4.06 4.19 9.69 6.38 16.84 6.61h1.25a27.65 27.65 0 0 0 9-1.33A22.39 22.39 0 0 0 185 74a16 16 0 0 0 3.87-4.23 7.8 7.8 0 0 0 1.29-3.8 3.58 3.58 0 0 0-1.16-2.84zm-28.14-22.4a9.58 9.58 0 0 1 7.39-3.09 9.94 9.94 0 0 1 7.58 3.05c1.91 2 3 5.25 3.32 9.4h-21.8c.39-4.09 1.56-7.29 3.52-9.36zm-21.65-27.17A5.26 5.26 0 0 0 135 11.8a5 5 0 0 0-4.22 1.92c-1.31 1.52-1.65 3.24-1.65 5.7V37.2a23.57 23.57 0 0 0-6.62-5.57 17.21 17.21 0 0 0-5.2-1.56 25.92 25.92 0 0 0-3.6-.24 18.38 18.38 0 0 0-14.54 6.34c-3.63 4.23-5.47 10.1-5.47 17.65a35.11 35.11 0 0 0 1.37 9.94 24.13 24.13 0 0 0 4.1 8 19.15 19.15 0 0 0 6.41 5.24 17.87 17.87 0 0 0 8 1.84 19.72 19.72 0 0 0 3.75-.35 14.67 14.67 0 0 0 2.27-.55 19.32 19.32 0 0 0 5.12-2.66 31.93 31.93 0 0 0 4.81-4.54v1.17a7.52 7.52 0 0 0 1.6 5.13 5.62 5.62 0 0 0 8.17.08 7.53 7.53 0 0 0 1.56-5.2V18.68a7.87 7.87 0 0 0-1.65-5.12zm-11.9 49.22a11.37 11.37 0 0 1-4.22 5 10.57 10.57 0 0 1-5.74 1.64 10.44 10.44 0 0 1-5.78-1.72 11.58 11.58 0 0 1-4.18-5.16 20.68 20.68 0 0 1-1.52-8.37 21.64 21.64 0 0 1 1.41-8.14 12.08 12.08 0 0 1 4.06-5.4 9.57 9.57 0 0 1 5.9-1.88h.16a9.72 9.72 0 0 1 5.6 1.88 12.35 12.35 0 0 1 4.26 5.28 20.52 20.52 0 0 1 1.56 8.29 21 21 0 0 1-1.51 8.58zM26 71.27v-28.8c.82.08 1.6.12 2.42.12A20.27 20.27 0 0 0 39 39.65v31.62c0 2.7-.49 4.7-1.71 6a6.16 6.16 0 0 1-4.77 2 6 6 0 0 1-4.69-2c-1.21-1.33-1.84-3.33-1.84-6zm-.12-69C34-.69 43.28-.53 50.23 5.5a11.79 11.79 0 0 1 3.36 4.5c.7 2.27-2.46-.23-2.89-.55a30.92 30.92 0 0 0-7.07-3.6C29.95 1.66 17 9.29 9 21.15A64.11 64.11 0 0 0 1.61 38a9.59 9.59 0 0 1-.7 2.11c-.35.67-.16-1.8-.16-1.88a52 52 0 0 1 1.41-7.36C5.87 17.94 14.08 7.18 25.88 2.25zm10.59 32A9.92 9.92 0 1 1 40.81 21a9.88 9.88 0 0 1-4.34 13.29zm20.87 2.53v1.5a21.48 21.48 0 0 1 6.9-6.13 18.79 18.79 0 0 1 8.65-1.94 17.35 17.35 0 0 1 8.45 2.06 13 13 0 0 1 5.55 5.82 13.56 13.56 0 0 1 1.55 4.78 48.84 48.84 0 0 1 .35 6.48v22.24A7.92 7.92 0 0 1 87.13 77a5.41 5.41 0 0 1-4.27 1.86A5.48 5.48 0 0 1 78.52 77a7.81 7.81 0 0 1-1.62-5.4V51.7c0-4-.59-7-1.68-9.09s-3.3-3.14-6.55-3.14a9.84 9.84 0 0 0-5.82 1.9A11 11 0 0 0 59 46.65c-.58 1.79-.91 5.09-.91 10v14.96c0 2.45-.52 4.23-1.65 5.47a5.68 5.68 0 0 1-4.34 1.82 5.38 5.38 0 0 1-4.29-1.9 7.82 7.82 0 0 1-1.67-5.4V37c0-2.29.5-4 1.51-5.09a5.1 5.1 0 0 1 4.07-1.71 5.41 5.41 0 0 1 2.83.74 5.29 5.29 0 0 1 2.06 2.25 8 8 0 0 1 .74 3.64z' fill='%23FFFFFF' fill-rule='evenodd'/%3E%3C/svg%3E")}[dir] .b-Logo--lettermark--inverted{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' viewBox='0 0 120 120'%3E%3Cdefs%3E%3Cpath id='icl-Logo-SVGID_1_' d='M52.2 9c11-4 23.6-3.8 33.1 4.4 1.8 1.7 3.8 3.7 4.6 6.2 1 3.1-3.3-.3-3.9-.7-3.1-2-6.2-3.7-9.6-4.9-18.6-5.8-36.2 4.6-47.1 20.8-4.6 7.1-7.5 14.7-10 22.9-.3.9-.5 2.1-1 2.9-.5.9-.2-2.5-.2-2.6.4-3.4 1.1-6.7 1.9-10 5-17.6 16.2-32.3 32.2-39zm14.1 42c-6.9 3.5-15.3.8-18.8-6.1-3.5-7-.7-15.4 6.2-18.9 6.9-3.5 15.3-.8 18.8 6.1 3.5 7 .7 15.4-6.2 18.9zM50 103.2V62.5c1.2.1 2.4.2 3.7.2 6 0 11.5-1.5 16.3-4.1v44.7c0 3.8-1 6.6-2.8 8.5-1.8 1.9-4.3 2.8-7.3 2.8-2.9 0-5.2-.9-7.1-2.9-1.8-2-2.8-4.8-2.8-8.5z' /%3E%3C/defs%3E%3CclipPath id='icl-Logo-SVGID_2_'%3E%3Cuse xlink:href='%23icl-Logo-SVGID_1_' overflow='visible' /%3E%3C/clipPath%3E%3Cpath style='clip-path: url(%23icl-Logo-SVGID_2_); fill: %23FFFFFF;' d='M-2-13.5h112v148H-2z' /%3E%3C/svg%3E")}

Here is the validation message:

And lastly, here is the stacktrace:

[aaronhuisinga]

Can confirm this is a valid issue.