removeViewBox.js•1.37 kB
'use strict';
exports.name = 'removeViewBox';
exports.description = 'removes viewBox attribute when possible';
const viewBoxElems = new Set(['pattern', 'svg', '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('./plugins-types').Plugin<'removeViewBox'>}
*/
exports.fn = () => {
return {
element: {
enter: (node, parentNode) => {
if (
viewBoxElems.has(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;
}
}
},
},
};
};