120 lines
3.5 KiB
JavaScript
120 lines
3.5 KiB
JavaScript
'use strict';
|
|
|
|
function appendOrSet(a, b) {
|
|
if (typeof b === 'string' && /^\s*\|/.test(b)) {
|
|
return typeof a === 'string'
|
|
? a + b
|
|
: b.replace(/^\s*\|\s*/, '');
|
|
}
|
|
|
|
return b || null;
|
|
}
|
|
|
|
function sliceProps(obj, props) {
|
|
const result = Object.create(null);
|
|
|
|
for (const [key, value] of Object.entries(obj)) {
|
|
if (value) {
|
|
result[key] = {};
|
|
for (const prop of Object.keys(value)) {
|
|
if (props.includes(prop)) {
|
|
result[key][prop] = value[prop];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
function mix(dest, src) {
|
|
const result = { ...dest };
|
|
|
|
for (const [prop, value] of Object.entries(src)) {
|
|
switch (prop) {
|
|
case 'generic':
|
|
result[prop] = Boolean(value);
|
|
break;
|
|
|
|
case 'units':
|
|
result[prop] = { ...dest[prop] };
|
|
for (const [name, patch] of Object.entries(value)) {
|
|
result[prop][name] = Array.isArray(patch) ? patch : [];
|
|
}
|
|
break;
|
|
|
|
case 'atrules':
|
|
result[prop] = { ...dest[prop] };
|
|
|
|
for (const [name, atrule] of Object.entries(value)) {
|
|
const exists = result[prop][name] || {};
|
|
const current = result[prop][name] = {
|
|
prelude: exists.prelude || null,
|
|
descriptors: {
|
|
...exists.descriptors
|
|
}
|
|
};
|
|
|
|
if (!atrule) {
|
|
continue;
|
|
}
|
|
|
|
current.prelude = atrule.prelude
|
|
? appendOrSet(current.prelude, atrule.prelude)
|
|
: current.prelude || null;
|
|
|
|
for (const [descriptorName, descriptorValue] of Object.entries(atrule.descriptors || {})) {
|
|
current.descriptors[descriptorName] = descriptorValue
|
|
? appendOrSet(current.descriptors[descriptorName], descriptorValue)
|
|
: null;
|
|
}
|
|
|
|
if (!Object.keys(current.descriptors).length) {
|
|
current.descriptors = null;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'types':
|
|
case 'properties':
|
|
result[prop] = { ...dest[prop] };
|
|
for (const [name, syntax] of Object.entries(value)) {
|
|
result[prop][name] = appendOrSet(result[prop][name], syntax);
|
|
}
|
|
break;
|
|
|
|
case 'scope':
|
|
result[prop] = { ...dest[prop] };
|
|
for (const [name, props] of Object.entries(value)) {
|
|
result[prop][name] = { ...result[prop][name], ...props };
|
|
}
|
|
break;
|
|
|
|
case 'parseContext':
|
|
result[prop] = {
|
|
...dest[prop],
|
|
...value
|
|
};
|
|
break;
|
|
|
|
case 'atrule':
|
|
case 'pseudo':
|
|
result[prop] = {
|
|
...dest[prop],
|
|
...sliceProps(value, ['parse']) };
|
|
break;
|
|
|
|
case 'node':
|
|
result[prop] = {
|
|
...dest[prop],
|
|
...sliceProps(value, ['name', 'structure', 'parse', 'generate', 'walkContext'])
|
|
};
|
|
break;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
module.exports = mix;
|