background.js•1.16 kB
import { List } from 'css-tree';
export default function compressBackground(node) {
function flush() {
if (!buffer.length) {
buffer.unshift(
{
type: 'Number',
loc: null,
value: '0'
},
{
type: 'Number',
loc: null,
value: '0'
}
);
}
newValue.push.apply(newValue, buffer);
buffer = [];
}
let newValue = [];
let buffer = [];
node.children.forEach((node) => {
if (node.type === 'Operator' && node.value === ',') {
flush();
newValue.push(node);
return;
}
// remove defaults
if (node.type === 'Identifier') {
if (node.name === 'transparent' ||
node.name === 'none' ||
node.name === 'repeat' ||
node.name === 'scroll') {
return;
}
}
buffer.push(node);
});
flush();
node.children = new List().fromArray(newValue);
};