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70
backend/node_modules/svgo/plugins/removeScriptElement.js
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70
backend/node_modules/svgo/plugins/removeScriptElement.js
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'use strict';
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const { detachNodeFromParent } = require('../lib/xast.js');
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const { attrsGroups } = require('./_collections.js');
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exports.name = 'removeScriptElement';
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exports.description = 'removes scripts (disabled by default)';
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/** Union of all event attributes. */
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const eventAttrs = [
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...attrsGroups.animationEvent,
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...attrsGroups.documentEvent,
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...attrsGroups.documentElementEvent,
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...attrsGroups.globalEvent,
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...attrsGroups.graphicalEvent,
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];
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/**
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* Remove scripts.
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*
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* https://www.w3.org/TR/SVG11/script.html
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*
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* @author Patrick Klingemann
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* @type {import('./plugins-types').Plugin<'removeScriptElement'>}
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*/
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exports.fn = () => {
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return {
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element: {
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enter: (node, parentNode) => {
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if (node.name === 'script') {
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detachNodeFromParent(node, parentNode);
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return;
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}
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for (const attr of eventAttrs) {
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if (node.attributes[attr] != null) {
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delete node.attributes[attr];
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}
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}
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},
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exit: (node, parentNode) => {
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if (node.name !== 'a') {
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return;
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}
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for (const attr of Object.keys(node.attributes)) {
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if (attr === 'href' || attr.endsWith(':href')) {
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if (
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node.attributes[attr] == null ||
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!node.attributes[attr].trimStart().startsWith('javascript:')
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) {
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continue;
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}
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const index = parentNode.children.indexOf(node);
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parentNode.children.splice(index, 1, ...node.children);
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// TODO remove legacy parentNode in v4
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for (const child of node.children) {
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Object.defineProperty(child, 'parentNode', {
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writable: true,
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value: parentNode,
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});
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}
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}
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}
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},
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},
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};
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};
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