You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
4.1 KiB
91 lines
4.1 KiB
2 years ago
|
var browserslist = require('browserslist');
|
||
|
|
|
||
|
|
function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
|
||
|
|
|
||
|
|
var browserslist__default = /*#__PURE__*/_interopDefaultLegacy(browserslist);
|
||
|
|
|
||
|
|
const plugin = opts => {
|
||
|
|
return {
|
||
|
|
postcssPlugin: 'postcss-browser-comments',
|
||
|
|
|
||
|
|
Once(root) {
|
||
|
|
// client browserslist
|
||
|
|
const clientBrowserList = browserslist__default['default'](Object(opts).browsers || null, {
|
||
|
|
path: root.source && root.source.input && root.source.input.file
|
||
|
|
}); // root children references
|
||
|
|
|
||
|
|
const references = root.nodes.slice(0); // for each child node of the root children references
|
||
|
|
|
||
|
|
for (const node of references) {
|
||
|
|
// if the node is a comment browser comment node
|
||
|
|
if (isBrowserCommentNode(node)) {
|
||
|
|
// rule following the browser comment
|
||
|
|
const rule = node.next(); // browser data
|
||
|
|
|
||
|
|
const browserdata = getBrowserData(node.text);
|
||
|
|
|
||
|
|
if (browserdata.isNumbered) {
|
||
|
|
rule.nodes.filter(isBrowserReferenceCommentNode).map(comment => {
|
||
|
|
const browserdataIndex = parseFloat(comment.text) - 1;
|
||
|
|
const browserslistPart = browserdata.browserslist[browserdataIndex]; // whether to remove the rule if the comment browserslist does not match the client browserslist
|
||
|
|
|
||
|
|
const removeRule = !clientBrowserList.some(clientBrowser => browserslist__default['default'](browserslistPart).some(commentBrowser => commentBrowser === clientBrowser)); // conditionally remove the declaration and reference comment
|
||
|
|
|
||
|
|
if (removeRule) {
|
||
|
|
comment.prev().remove();
|
||
|
|
comment.remove();
|
||
|
|
}
|
||
|
|
}); // conditionally remove the empty rule and comment
|
||
|
|
|
||
|
|
if (!rule.nodes.length) {
|
||
|
|
rule.remove();
|
||
|
|
node.remove();
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
// whether to remove the rule if the comment browserslist does not match the client browserslist
|
||
|
|
const removeRule = !clientBrowserList.some(clientBrowser => browserslist__default['default'](browserdata.browserslist).some(commentBrowser => commentBrowser === clientBrowser)); // conditionally remove the rule and comment
|
||
|
|
|
||
|
|
if (removeRule) {
|
||
|
|
rule.remove();
|
||
|
|
node.remove();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
plugin.postcss = true;
|
||
|
|
|
||
|
|
const isBrowserCommentNode = node => node.type === 'comment' && isBrowserCommentNodeRegExp.test(node.text) && node.next().type === 'rule';
|
||
|
|
|
||
|
|
const isBrowserCommentNodeRegExp = /^\*\n * /; // returns whether a node is a browser reference comment
|
||
|
|
|
||
|
|
const isBrowserReferenceCommentNode = node => node.type === 'comment' && isBrowserReferenceCommentNodeRegExp.test(node.text);
|
||
|
|
|
||
|
|
const isBrowserReferenceCommentNodeRegExp = /^\d+$/; // returns browser data from comment text
|
||
|
|
|
||
|
|
const getBrowserData = text => {
|
||
|
|
const browserDataNumbered = text.match(browserDataMutliRegExp);
|
||
|
|
const isNumbered = Boolean(browserDataNumbered);
|
||
|
|
return {
|
||
|
|
browserslist: isNumbered ? browserDataNumbered.map(browserslistPart => getBrowsersList(browserslistPart.replace(browserDataNumberedNewlineRegExp, '$1'))) : getBrowsersList(text.replace(browserDataNewlineRegExp, '')),
|
||
|
|
isNumbered
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
const browserDataMutliRegExp = /(\n \* \d+\. (?:[^\n]+|\n \* {4,})+)/g;
|
||
|
|
const browserDataNewlineRegExp = /^\*\n \* ?|\n \*/g;
|
||
|
|
const browserDataNumberedNewlineRegExp = /\n \* (?:( )\s*)?/g; // returns a browserlist from comment text
|
||
|
|
|
||
|
|
const getBrowsersList = text => text.split(getBrowsersListInSplitRegExp).slice(1).map(part => part.split(getBrowsersListAndSplitRegExp).filter(part2 => part2)).reduce((acc, val) => acc.concat(val), []).map(part => part.replace(getBrowsersListQueryRegExp, ($0, browser, query) => browser === 'all' ? '> 0%' : `${browser}${query ? /^((?:\d*\.)?\d+)-$/.test(query) ? ` <= ${query.slice(0, -1)}` : ` ${query}` : ' > 0'}`).toLowerCase());
|
||
|
|
|
||
|
|
const getBrowsersListInSplitRegExp = /\s+in\s+/;
|
||
|
|
const getBrowsersListAndSplitRegExp = /(?: and|, and|,)/;
|
||
|
|
const getBrowsersListQueryRegExp = /^\s*(\w+)(?: ((?:(?:\d*\.)?\d+-)?(?:\d*\.)?\d+[+-]?))?.*$/;
|
||
|
|
|
||
|
|
module.exports = plugin;
|
||
|
|
//# sourceMappingURL=index.cjs.map
|