Normalize unicode-range descriptors, and can convert to wildcard ranges. 

evilebottnawi

chriseppstein

beneb

andyjansson

cssnano-bot

ludovicofischer

postcss-normalize-unicode

  "description": "Normalize unicode-range descriptors, and can convert to wildcard ranges.",

  "homepage": "https://github.com/cssnano/cssnano",

    "url": "https://github.com/cssnano/cssnano/issues"

  "readme": "# [postcss][postcss]-normalize-unicode\n\n> Normalize unicode with PostCSS.\n\n## Install\n\nWith [npm](https://npmjs.org/package/postcss-normalize-unicode) do:\n\n```\nnpm install postcss-normalize-unicode --save\n```\n\n## Example\n\n### Input\n\n```css\n@font-face{\n    font-family: test;\n    unicode-range: u+2b00-2bff\n}\n```\n\n### Output\n\n```css\n@font-face{\n    font-family: test;\n    unicode-range: u+2b??\n}\n``` \n\n## Usage\n\nSee the [PostCSS documentation](https://github.com/postcss/postcss#usage) for\nexamples for your environment.\n\n## Contributors\n\nSee [CONTRIBUTORS.md](https://github.com/cssnano/cssnano/blob/master/CONTRIBUTORS.md).\n\n## License\n\nMIT © [Ben Briggs](http://beneb.info)\n\n[postcss]: https://github.com/postcss/postcss\n"

const browserslist = require('browserslist');

const valueParser = require('postcss-value-parser');

const regexLowerCaseUPrefix = /^u(?=\+)/;

  const values = range.slice(2).split('-');

  const merged = mergeRangeBounds(left, right);

  for (const [index, value] of left.entries()) {

    if (value === right[index] && questionCounter === 0) {

    } else if (value === '0' && right[index] === 'f') {

  // The maximum number of wildcard characters (?) for ranges is 5.

 * IE and Edge before 16 version ignore the unicode-range if the 'U' is lowercase

 * https://caniuse.com/#search=unicode-range

function hasLowerCaseUPrefixBug(browser) {

  return browserslist('ie <=11, edge <= 15').includes(browser);

function transform(value, isLegacy = false) {

      if (child.type === 'unicode-range') {

        const transformed = unicode(child.value.toLowerCase());

          ? transformed.replace(regexLowerCaseUPrefix, 'U')

 * @type {import('postcss').PluginCreator<void>}

    postcssPlugin: 'postcss-normalize-unicode',

    /** @param {import('postcss').Result & {opts: browserslist.Options}} result*/

      const resultOpts = result.opts || {};

      const browsers = browserslist(null, {

      const isLegacy = browsers.some(hasLowerCaseUPrefixBug);

          css.walkDecls(/^unicode-range$/i, (decl) => {

              decl.value = cache.get(value);

            const newValue = transform(value, isLegacy);

		{
		"name": "postcss-normalize-unicode",
		"version": "5.0.4",
		"version": "5.1.0",
		"description": "Normalize unicode-range descriptors, and can convert to wildcard ranges.",
		"main": "src/index.js",
		"types": "types/index.d.ts",
		"files": [
		"src",
		"LICENSE-MIT"
		"LICENSE-MIT",
		"types"
		],
		@@ -10,0 +12,0 @@ "keywords": [

		@@ -7,2 +7,6 @@ 'use strict';

		/**
		* @param {string} range
		* @return {string}
		*/
		function unicode(range) {
		@@ -56,8 +60,10 @@ const values = range.slice(2).split('-');

		/*
		/**
		* IE and Edge before 16 version ignore the unicode-range if the 'U' is lowercase
		*
		* https://caniuse.com/#search=unicode-range
		*
		* @param {string} browser
		* @return {boolean}
		*/

		function hasLowerCaseUPrefixBug(browser) {
		@@ -67,2 +73,6 @@ return browserslist('ie <=11, edge <= 15').includes(browser);

		/**
		* @param {string} value
		* @return {string}
		*/
		function transform(value, isLegacy = false) {
		@@ -84,5 +94,10 @@ return valueParser(value)

		/**
		* @type {import('postcss').PluginCreator<void>}
		* @return {import('postcss').Plugin}
		*/
		function pluginCreator() {
		return {
		postcssPlugin: 'postcss-normalize-unicode',
		/** @param {import('postcss').Result & {opts: browserslist.Options}} result*/
		prepare(result) {
		@@ -89,0 +104,0 @@ const cache = new Map();

Improved metrics