mirror of
https://github.com/svg/svgo.git
synced 2025-04-19 10:22:15 +03:00
07f8d606e0
I saw complaints about `extendDefaultPlugins` api
- it cannot be used when svgo is installed globally
- it requires svgo to be installed when using svgo-loader or svgo-jsx
- it prevents using serializable config formats like json
In this diff I introduced the new plugin which is a bundle of all
default plugins.
```js
module.exports = {
plugins: [
'preset_default',
// or
{
name: 'preset_default',
floatPrecision: 4,
overrides: {
convertPathData: {
applyTransforms: false
}
}
}
]
}
```
83 lines
1.9 KiB
JavaScript
83 lines
1.9 KiB
JavaScript
'use strict';
|
|
|
|
const { traverse } = require('../lib/xast.js');
|
|
const { parseName } = require('../lib/svgo/tools.js');
|
|
|
|
exports.name = 'removeUnusedNS';
|
|
|
|
exports.type = 'full';
|
|
|
|
exports.active = true;
|
|
|
|
exports.description = 'removes unused namespaces declaration';
|
|
|
|
/**
|
|
* Remove unused namespaces declaration.
|
|
*
|
|
* @param {Object} item current iteration item
|
|
* @return {Boolean} if false, item will be filtered out
|
|
*
|
|
* @author Kir Belevich
|
|
*/
|
|
exports.fn = function (root) {
|
|
let svgElem;
|
|
const xmlnsCollection = [];
|
|
|
|
/**
|
|
* Remove namespace from collection.
|
|
*
|
|
* @param {String} ns namescape name
|
|
*/
|
|
function removeNSfromCollection(ns) {
|
|
const pos = xmlnsCollection.indexOf(ns);
|
|
|
|
// if found - remove ns from the namespaces collection
|
|
if (pos > -1) {
|
|
xmlnsCollection.splice(pos, 1);
|
|
}
|
|
}
|
|
|
|
traverse(root, (node) => {
|
|
if (node.type === 'element') {
|
|
if (node.name === 'svg') {
|
|
for (const name of Object.keys(node.attributes)) {
|
|
const { prefix, local } = parseName(name);
|
|
// collect namespaces
|
|
if (prefix === 'xmlns' && local) {
|
|
xmlnsCollection.push(local);
|
|
}
|
|
}
|
|
|
|
// if svg element has ns-attr
|
|
if (xmlnsCollection.length) {
|
|
// save svg element
|
|
svgElem = node;
|
|
}
|
|
}
|
|
|
|
if (xmlnsCollection.length) {
|
|
const { prefix } = parseName(node.name);
|
|
// check node for the ns-attrs
|
|
if (prefix) {
|
|
removeNSfromCollection(prefix);
|
|
}
|
|
|
|
// check each attr for the ns-attrs
|
|
for (const name of Object.keys(node.attributes)) {
|
|
const { prefix } = parseName(name);
|
|
removeNSfromCollection(prefix);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
// remove svg element ns-attributes if they are not used even once
|
|
if (xmlnsCollection.length) {
|
|
for (const name of xmlnsCollection) {
|
|
delete svgElem.attributes['xmlns:' + name];
|
|
}
|
|
}
|
|
|
|
return root;
|
|
};
|