86 lines
1.6 KiB
JavaScript
86 lines
1.6 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
const { isComment, isDocument, isRoot, hasSource } = require('./typeGuards');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {import('postcss').Node} statement
|
||
|
|
* @returns {boolean}
|
||
|
|
*/
|
||
|
|
module.exports = function isFirstNested(statement) {
|
||
|
|
const parentNode = statement.parent;
|
||
|
|
|
||
|
|
if (parentNode === undefined) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isRoot(parentNode) && !isInDocument(parentNode)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (statement === parentNode.first) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Search for the statement in the parent's nodes, ignoring comment
|
||
|
|
* nodes on the same line as the parent's opening brace.
|
||
|
|
*/
|
||
|
|
|
||
|
|
const parentNodes = parentNode.nodes;
|
||
|
|
|
||
|
|
if (!parentNodes) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
const firstNode = parentNodes[0];
|
||
|
|
|
||
|
|
if (!firstNode) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (
|
||
|
|
!isComment(firstNode) ||
|
||
|
|
(typeof firstNode.raws.before === 'string' && firstNode.raws.before.includes('\n'))
|
||
|
|
) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!hasSource(firstNode) || !firstNode.source.start) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
const openingBraceLine = firstNode.source.start.line;
|
||
|
|
|
||
|
|
if (!firstNode.source.end || openingBraceLine !== firstNode.source.end.line) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (const [index, node] of parentNodes.entries()) {
|
||
|
|
if (index === 0) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node === statement) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (
|
||
|
|
!isComment(node) ||
|
||
|
|
(hasSource(node) && node.source.end && node.source.end.line !== openingBraceLine)
|
||
|
|
) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* istanbul ignore next: Should always return in the loop */
|
||
|
|
return false;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param {import('postcss').Node} node
|
||
|
|
* @returns {boolean}
|
||
|
|
*/
|
||
|
|
function isInDocument({ parent }) {
|
||
|
|
return Boolean(parent && isDocument(parent));
|
||
|
|
}
|