postcss-rtl/lib/rules.js

PostCSS plugin for RTL-optimizations

"use strict";

const rtlcss = require('rtlcss');
const {
  isSelectorHasDir,
  addDirToSelectors
} = require('./selectors');
const getDirRule = (rule, dir, options) => {
  const next = rule.next();
  let {
    selector
  } = rule;
  selector = isSelectorHasDir(selector, options) ? selector : addDirToSelectors(selector, dir, options);
  if (rule.selector === selector) {
    return rule;
  }
  if (next && next.selector === selector) {
    return next;
  }
  return rule.cloneAfter({
    selector
  }).removeAll();
};
const setRuleDir = (rule, dir, options) => {
  const {
    selector
  } = rule;
  rule.selector = isSelectorHasDir(selector, options) ? selector : addDirToSelectors(selector, dir, options);
};
const rtlifyRule = rule => {
  const rtlResult = rtlcss.process(rule);
  return rtlResult !== rule.toString() ? rtlResult : false;
};
const processSrcRule = (rule, options) => {
  if (rule.nodes.length === 0) {
    rule.remove();
  } else {
    setRuleDir(rule, null, options);
  }
};
module.exports = {
  getDirRule,
  setRuleDir,
  rtlifyRule,
  processSrcRule
};