updated node modules

1 files changed, 226 insertions, 0 deletions

diff --git a/node_modules/svgo/plugins/removeXlink.js b/node_modules/svgo/plugins/removeXlink.js
new file mode 100644
index 00000000..d341b673
--- /dev/null
+++ b/node_modules/svgo/plugins/removeXlink.js
@@ -0,0 +1,226 @@
+'use strict';
+
+const { elems } = require('./_collections');
+
+/**
+ * @typedef {import('../lib/types').XastElement} XastElement
+ */
+
+exports.name = 'removeXlink';
+exports.description =
+  'remove xlink namespace and replaces attributes with the SVG 2 equivalent where applicable';
+
+/** URI indicating the Xlink namespace. */
+const XLINK_NAMESPACE = 'http://www.w3.org/1999/xlink';
+
+/**
+ * Map of `xlink:show` values to the SVG 2 `target` attribute values.
+ *
+ * @type {Record<string, string>}
+ * @see https://developer.mozilla.org/docs/Web/SVG/Attribute/xlink:show#usage_notes
+ */
+const SHOW_TO_TARGET = {
+  new: '_blank',
+  replace: '_self',
+};
+
+/**
+ * Elements that use xlink:href, but were deprecated in SVG 2 and therefore
+ * don't support the SVG 2 href attribute.
+ *
+ * @type {string[]}
+ * @see https://developer.mozilla.org/docs/Web/SVG/Attribute/xlink:href
+ * @see https://developer.mozilla.org/docs/Web/SVG/Attribute/href
+ */
+const LEGACY_ELEMENTS = [
+  'cursor',
+  'filter',
+  'font-face-uri',
+  'glyphRef',
+  'tref',
+];
+
+/**
+ * @param {XastElement} node
+ * @param {string[]} prefixes
+ * @param {string} attr
+ * @returns {string[]}
+ */
+const findPrefixedAttrs = (node, prefixes, attr) => {
+  return prefixes
+    .map((prefix) => `${prefix}:${attr}`)
+    .filter((attr) => node.attributes[attr] != null);
+};
+
+/**
+ * Removes XLink namespace prefixes and converts references to XLink attributes
+ * to the native SVG equivalent.
+ *
+ * The XLink namespace is deprecated in SVG 2.
+ *
+ * @type {import('./plugins-types').Plugin<'removeXlink'>}
+ * @see https://developer.mozilla.org/docs/Web/SVG/Attribute/xlink:href
+ */
+exports.fn = (_, params) => {
+  const { includeLegacy } = params;
+
+  /**
+   * XLink namespace prefixes that are currently in the stack.
+   *
+   * @type {string[]}
+   */
+  const xlinkPrefixes = [];
+
+  /**
+   * Namespace prefixes that exist in {@link xlinkPrefixes} but were overridden
+   * in a child element to point to another namespace, and so is not treated as
+   * an XLink attribute.
+   *
+   * @type {string[]}
+   */
+  const overriddenPrefixes = [];
+
+  /**
+   * Namespace prefixes that were used in one of the {@link LEGACY_ELEMENTS}.
+   *
+   * @type {string[]}
+   */
+  const usedInLegacyElement = [];
+
+  return {
+    element: {
+      enter: (node) => {
+        for (const [key, value] of Object.entries(node.attributes)) {
+          if (key.startsWith('xmlns:')) {
+            const prefix = key.split(':', 2)[1];
+
+            if (value === XLINK_NAMESPACE) {
+              xlinkPrefixes.push(prefix);
+              continue;
+            }
+
+            if (xlinkPrefixes.includes(prefix)) {
+              overriddenPrefixes.push(prefix);
+            }
+          }
+        }
+
+        if (
+          overriddenPrefixes.some((prefix) => xlinkPrefixes.includes(prefix))
+        ) {
+          return;
+        }
+
+        const showAttrs = findPrefixedAttrs(node, xlinkPrefixes, 'show');
+        let showHandled = node.attributes.target != null;
+        for (let i = showAttrs.length - 1; i >= 0; i--) {
+          const attr = showAttrs[i];
+          const value = node.attributes[attr];
+          const mapping = SHOW_TO_TARGET[value];
+
+          if (showHandled || mapping == null) {
+            delete node.attributes[attr];
+            continue;
+          }
+
+          if (mapping !== elems[node.name]?.defaults?.target) {
+            node.attributes.target = mapping;
+          }
+
+          delete node.attributes[attr];
+          showHandled = true;
+        }
+
+        const titleAttrs = findPrefixedAttrs(node, xlinkPrefixes, 'title');
+        for (let i = titleAttrs.length - 1; i >= 0; i--) {
+          const attr = titleAttrs[i];
+          const value = node.attributes[attr];
+          const hasTitle = node.children.filter(
+            (child) => child.type === 'element' && child.name === 'title'
+          );
+
+          if (hasTitle.length > 0) {
+            delete node.attributes[attr];
+            continue;
+          }
+
+          /** @type {XastElement} */
+          const titleTag = {
+            type: 'element',
+            name: 'title',
+            attributes: {},
+            children: [
+              {
+                type: 'text',
+                value,
+              },
+            ],
+          };
+
+          Object.defineProperty(titleTag, 'parentNode', {
+            writable: true,
+            value: node,
+          });
+
+          node.children.unshift(titleTag);
+          delete node.attributes[attr];
+        }
+
+        const hrefAttrs = findPrefixedAttrs(node, xlinkPrefixes, 'href');
+
+        if (
+          hrefAttrs.length > 0 &&
+          LEGACY_ELEMENTS.includes(node.name) &&
+          !includeLegacy
+        ) {
+          hrefAttrs
+            .map((attr) => attr.split(':', 1)[0])
+            .forEach((prefix) => usedInLegacyElement.push(prefix));
+          return;
+        }
+
+        for (let i = hrefAttrs.length - 1; i >= 0; i--) {
+          const attr = hrefAttrs[i];
+          const value = node.attributes[attr];
+
+          if (node.attributes.href != null) {
+            delete node.attributes[attr];
+            continue;
+          }
+
+          node.attributes.href = value;
+          delete node.attributes[attr];
+        }
+      },
+      exit: (node) => {
+        for (const [key, value] of Object.entries(node.attributes)) {
+          const [prefix, attr] = key.split(':', 2);
+
+          if (
+            xlinkPrefixes.includes(prefix) &&
+            !overriddenPrefixes.includes(prefix) &&
+            !usedInLegacyElement.includes(prefix) &&
+            !includeLegacy
+          ) {
+            delete node.attributes[key];
+            continue;
+          }
+
+          if (key.startsWith('xmlns:') && !usedInLegacyElement.includes(attr)) {
+            if (value === XLINK_NAMESPACE) {
+              const index = xlinkPrefixes.indexOf(attr);
+              xlinkPrefixes.splice(index, 1);
+              delete node.attributes[key];
+              continue;
+            }
+
+            if (overriddenPrefixes.includes(prefix)) {
+              const index = overriddenPrefixes.indexOf(attr);
+              overriddenPrefixes.splice(index, 1);
+            }
+          }
+        }
+      },
+    },
+  };
+};