1 files changed, 136 insertions, 0 deletions
diff --git a/node_modules/svgo/plugins/removeOffCanvasPaths.js b/node_modules/svgo/plugins/removeOffCanvasPaths.js
new file mode 100644
index 00000000..7a3d131d
--- /dev/null
+++ b/node_modules/svgo/plugins/removeOffCanvasPaths.js
@@ -0,0 +1,136 @@
+'use strict';
+
+/**
+ * @typedef {import('../lib/types').PathDataItem} PathDataItem
+ */
+
+const { visitSkip, detachNodeFromParent } = require('../lib/xast.js');
+const { parsePathData } = require('../lib/path.js');
+const { intersects } = require('./_path.js');
+
+exports.name = 'removeOffCanvasPaths';
+exports.description =
+  'removes elements that are drawn outside of the viewbox (disabled by default)';
+
+/**
+ * Remove elements that are drawn outside of the viewbox.
+ *
+ * @author JoshyPHP
+ *
+ * @type {import('./plugins-types').Plugin<'removeOffCanvasPaths'>}
+ */
+exports.fn = () => {
+  /**
+   * @type {null | {
+   *   top: number,
+   *   right: number,
+   *   bottom: number,
+   *   left: number,
+   *   width: number,
+   *   height: number
+   * }}
+   */
+  let viewBoxData = null;
+
+  return {
+    element: {
+      enter: (node, parentNode) => {
+        if (node.name === 'svg' && parentNode.type === 'root') {
+          let viewBox = '';
+          // find viewbox
+          if (node.attributes.viewBox != null) {
+            // remove commas and plus signs, normalize and trim whitespace
+            viewBox = node.attributes.viewBox;
+          } else if (
+            node.attributes.height != null &&
+            node.attributes.width != null
+          ) {
+            viewBox = `0 0 ${node.attributes.width} ${node.attributes.height}`;
+          }
+
+          // parse viewbox
+          // remove commas and plus signs, normalize and trim whitespace
+          viewBox = viewBox
+            .replace(/[,+]|px/g, ' ')
+            .replace(/\s+/g, ' ')
+            .replace(/^\s*|\s*$/g, '');
+          // ensure that the dimensions are 4 values separated by space
+          const m =
+            /^(-?\d*\.?\d+) (-?\d*\.?\d+) (\d*\.?\d+) (\d*\.?\d+)$/.exec(
+              viewBox
+            );
+          if (m == null) {
+            return;
+          }
+          const left = Number.parseFloat(m[1]);
+          const top = Number.parseFloat(m[2]);
+          const width = Number.parseFloat(m[3]);
+          const height = Number.parseFloat(m[4]);
+
+          // store the viewBox boundaries
+          viewBoxData = {
+            left,
+            top,
+            right: left + width,
+            bottom: top + height,
+            width,
+            height,
+          };
+        }
+
+        // consider that any item with a transform attribute is visible
+        if (node.attributes.transform != null) {
+          return visitSkip;
+        }
+
+        if (
+          node.name === 'path' &&
+          node.attributes.d != null &&
+          viewBoxData != null
+        ) {
+          const pathData = parsePathData(node.attributes.d);
+
+          // consider that a M command within the viewBox is visible
+          let visible = false;
+          for (const pathDataItem of pathData) {
+            if (pathDataItem.command === 'M') {
+              const [x, y] = pathDataItem.args;
+              if (
+                x >= viewBoxData.left &&
+                x <= viewBoxData.right &&
+                y >= viewBoxData.top &&
+                y <= viewBoxData.bottom
+              ) {
+                visible = true;
+              }
+            }
+          }
+          if (visible) {
+            return;
+          }
+
+          if (pathData.length === 2) {
+            // close the path too short for intersects()
+            pathData.push({ command: 'z', args: [] });
+          }
+
+          const { left, top, width, height } = viewBoxData;
+          /**
+           * @type {Array<PathDataItem>}
+           */
+          const viewBoxPathData = [
+            { command: 'M', args: [left, top] },
+            { command: 'h', args: [width] },
+            { command: 'v', args: [height] },
+            { command: 'H', args: [left] },
+            { command: 'z', args: [] },
+          ];
+
+          if (intersects(viewBoxPathData, pathData) === false) {
+            detachNodeFromParent(node, parentNode);
+          }
+        }
+      },
+    },
+  };
+};