switch to vuepress

1 files changed, 218 insertions, 0 deletions

diff --git a/node_modules/svgo/plugins/removeHiddenElems.js b/node_modules/svgo/plugins/removeHiddenElems.js
new file mode 100644
index 00000000..231a2bdf
--- /dev/null
+++ b/node_modules/svgo/plugins/removeHiddenElems.js
@@ -0,0 +1,218 @@
+'use strict';
+
+exports.type = 'perItem';
+
+exports.active = true;
+
+exports.description = 'removes hidden elements (zero sized, with absent attributes)';
+
+exports.params = {
+    displayNone: true,
+    opacity0: true,
+    circleR0: true,
+    ellipseRX0: true,
+    ellipseRY0: true,
+    rectWidth0: true,
+    rectHeight0: true,
+    patternWidth0: true,
+    patternHeight0: true,
+    imageWidth0: true,
+    imageHeight0: true,
+    pathEmptyD: true,
+    polylineEmptyPoints: true,
+    polygonEmptyPoints: true
+};
+
+var regValidPath = /M\s*(?:[-+]?(?:\d*\.\d+|\d+(?:\.|(?!\.)))([eE][-+]?\d+)?(?!\d)\s*,?\s*){2}\D*\d/i;
+
+/**
+ * Remove hidden elements with disabled rendering:
+ * - display="none"
+ * - opacity="0"
+ * - circle with zero radius
+ * - ellipse with zero x-axis or y-axis radius
+ * - rectangle with zero width or height
+ * - pattern with zero width or height
+ * - image with zero width or height
+ * - path with empty data
+ * - polyline with empty points
+ * - polygon with empty points
+ *
+ * @param {Object} item current iteration item
+ * @param {Object} params plugin params
+ * @return {Boolean} if false, item will be filtered out
+ *
+ * @author Kir Belevich
+ */
+exports.fn = function(item, params) {
+
+    if (item.elem) {
+
+        // display="none"
+        //
+        // http://www.w3.org/TR/SVG/painting.html#DisplayProperty
+        // "A value of display: none indicates that the given element
+        // and its children shall not be rendered directly"
+        if (
+            params.displayNone &&
+            item.hasAttr('display', 'none')
+        ) return false;
+
+        // opacity="0"
+        //
+        // http://www.w3.org/TR/SVG/masking.html#ObjectAndGroupOpacityProperties
+        if (
+            params.opacity0 &&
+            item.hasAttr('opacity', '0')
+        ) return false;
+
+        // Circles with zero radius
+        //
+        // http://www.w3.org/TR/SVG/shapes.html#CircleElementRAttribute
+        // "A value of zero disables rendering of the element"
+        //
+        // <circle r="0">
+        if (
+            params.circleR0 &&
+            item.isElem('circle') &&
+            item.isEmpty() &&
+            item.hasAttr('r', '0')
+        ) return false;
+
+        // Ellipse with zero x-axis radius
+        //
+        // http://www.w3.org/TR/SVG/shapes.html#EllipseElementRXAttribute
+        // "A value of zero disables rendering of the element"
+        //
+        // <ellipse rx="0">
+        if (
+            params.ellipseRX0 &&
+            item.isElem('ellipse') &&
+            item.isEmpty() &&
+            item.hasAttr('rx', '0')
+        ) return false;
+
+        // Ellipse with zero y-axis radius
+        //
+        // http://www.w3.org/TR/SVG/shapes.html#EllipseElementRYAttribute
+        // "A value of zero disables rendering of the element"
+        //
+        // <ellipse ry="0">
+        if (
+            params.ellipseRY0 &&
+            item.isElem('ellipse') &&
+            item.isEmpty() &&
+            item.hasAttr('ry', '0')
+        ) return false;
+
+        // Rectangle with zero width
+        //
+        // http://www.w3.org/TR/SVG/shapes.html#RectElementWidthAttribute
+        // "A value of zero disables rendering of the element"
+        //
+        // <rect width="0">
+        if (
+            params.rectWidth0 &&
+            item.isElem('rect') &&
+            item.isEmpty() &&
+            item.hasAttr('width', '0')
+        ) return false;
+
+        // Rectangle with zero height
+        //
+        // http://www.w3.org/TR/SVG/shapes.html#RectElementHeightAttribute
+        // "A value of zero disables rendering of the element"
+        //
+        // <rect height="0">
+        if (
+            params.rectHeight0 &&
+            params.rectWidth0 &&
+            item.isElem('rect') &&
+            item.isEmpty() &&
+            item.hasAttr('height', '0')
+        ) return false;
+
+        // Pattern with zero width
+        //
+        // http://www.w3.org/TR/SVG/pservers.html#PatternElementWidthAttribute
+        // "A value of zero disables rendering of the element (i.e., no paint is applied)"
+        //
+        // <pattern width="0">
+        if (
+            params.patternWidth0 &&
+            item.isElem('pattern') &&
+            item.hasAttr('width', '0')
+        ) return false;
+
+        // Pattern with zero height
+        //
+        // http://www.w3.org/TR/SVG/pservers.html#PatternElementHeightAttribute
+        // "A value of zero disables rendering of the element (i.e., no paint is applied)"
+        //
+        // <pattern height="0">
+        if (
+            params.patternHeight0 &&
+            item.isElem('pattern') &&
+            item.hasAttr('height', '0')
+        ) return false;
+
+        // Image with zero width
+        //
+        // http://www.w3.org/TR/SVG/struct.html#ImageElementWidthAttribute
+        // "A value of zero disables rendering of the element"
+        //
+        // <image width="0">
+        if (
+            params.imageWidth0 &&
+            item.isElem('image') &&
+            item.hasAttr('width', '0')
+        ) return false;
+
+        // Image with zero height
+        //
+        // http://www.w3.org/TR/SVG/struct.html#ImageElementHeightAttribute
+        // "A value of zero disables rendering of the element"
+        //
+        // <image height="0">
+        if (
+            params.imageHeight0 &&
+            item.isElem('image') &&
+            item.hasAttr('height', '0')
+        ) return false;
+
+        // Path with empty data
+        //
+        // http://www.w3.org/TR/SVG/paths.html#DAttribute
+        //
+        // <path d=""/>
+        if (
+            params.pathEmptyD &&
+            item.isElem('path') &&
+            (!item.hasAttr('d') || !regValidPath.test(item.attr('d').value))
+        ) return false;
+
+        // Polyline with empty points
+        //
+        // http://www.w3.org/TR/SVG/shapes.html#PolylineElementPointsAttribute
+        //
+        // <polyline points="">
+        if (
+            params.polylineEmptyPoints &&
+            item.isElem('polyline') &&
+            !item.hasAttr('points')
+        ) return false;
+
+        // Polygon with empty points
+        //
+        // http://www.w3.org/TR/SVG/shapes.html#PolygonElementPointsAttribute
+        //
+        // <polygon points="">
+        if (
+            params.polygonEmptyPoints &&
+            item.isElem('polygon') &&
+            !item.hasAttr('points')
+        ) return false;
+
+    }
+
+};