| 'use strict'; |
| |
| exports.type = 'visitor'; |
| exports.name = 'removeViewBox'; |
| exports.active = true; |
| exports.description = 'removes viewBox attribute when possible'; |
| |
| const viewBoxElems = ['svg', 'pattern', 'symbol']; |
| |
| /** |
| * Remove viewBox attr which coincides with a width/height box. |
| * |
| * @see https://www.w3.org/TR/SVG11/coords.html#ViewBoxAttribute |
| * |
| * @example |
| * <svg width="100" height="50" viewBox="0 0 100 50"> |
| * ⬇ |
| * <svg width="100" height="50"> |
| * |
| * @author Kir Belevich |
| * |
| * @type {import('../lib/types').Plugin<void>} |
| */ |
| exports.fn = () => { |
| return { |
| element: { |
| enter: (node, parentNode) => { |
| if ( |
| viewBoxElems.includes(node.name) && |
| node.attributes.viewBox != null && |
| node.attributes.width != null && |
| node.attributes.height != null |
| ) { |
| // TODO remove width/height for such case instead |
| if (node.name === 'svg' && parentNode.type !== 'root') { |
| return; |
| } |
| const nums = node.attributes.viewBox.split(/[ ,]+/g); |
| if ( |
| nums[0] === '0' && |
| nums[1] === '0' && |
| node.attributes.width.replace(/px$/, '') === nums[2] && // could use parseFloat too |
| node.attributes.height.replace(/px$/, '') === nums[3] |
| ) { |
| delete node.attributes.viewBox; |
| } |
| } |
| }, |
| }, |
| }; |
| }; |