refactor: drop one-liner dependencies (#1224)

* refactor: remove uniqs

Remove uniqs as it's a one-liner.

* refactor(postcss-merge-rules): drop vendors dep

Remove vendors as it'just a single array that did not change in
the last 5 years, and cssnano only uses it once.

* refactor(postcss-merge-rules): replace array with regex

* refactor(postcss-merge-rules): make vendor prefix regex more accepting

* Revert "refactor(postcss-merge-rules): make vendor prefix regex more accepting"

This reverts commit c310933.

packages/postcss-merge-rules/package.json

@@ -30,8 +30,7 @@
     "browserslist": "^4.16.6",
     "caniuse-api": "^3.0.0",
     "cssnano-utils": "^2.0.1",
-    "postcss-selector-parser": "^6.0.5",
-    "vendors": "^1.0.3"
+    "postcss-selector-parser": "^6.0.5"
   },
   "bugs": {
     "url": "https://github.com/cssnano/cssnano/issues"

packages/postcss-merge-rules/src/lib/ensureCompatibility.js

@@ -1,6 +1,5 @@
 import { isSupported } from 'caniuse-api';
 import selectorParser from 'postcss-selector-parser';
-import vendors from 'vendors';
 
 const simpleSelectorRe = /^#?[-._a-z0-9 ]+$/i;
 
@@ -12,15 +11,15 @@ const cssFirstLine = 'css-first-line';
 const cssInOutOfRange = 'css-in-out-of-range';
 const formValidation = 'form-validation';
 
-/** @type {string[]} */
-const prefixes = vendors.map((v) => `-${v}-`);
+const vendorPrefix =
+  /-(ah|apple|atsc|epub|hp|khtml|moz|ms|o|rim|ro|tc|wap|webkit|xv)-/;
 
 /**
  * @param {string} selector
  * @return {string[]}
  */
-export function filterPrefixes(selector) {
-  return prefixes.filter((prefix) => selector.indexOf(prefix) !== -1);
+function filterPrefixes(selector) {
+  return selector.match(vendorPrefix);
 }
 
 // Internet Explorer use :-ms-input-placeholder.
@@ -42,7 +41,7 @@ export function sameVendor(selectorsA, selectorsB) {
  * @return {boolean}
  */
 export function noVendor(selector) {
-  return !filterPrefixes(selector).length;
+  return !vendorPrefix.test(selector);
 }
 
 export const pseudoElements = {

packages/postcss-minify-params/package.json

@@ -25,8 +25,7 @@
     "alphanum-sort": "^1.0.2",
     "browserslist": "^4.16.6",
     "cssnano-utils": "^2.0.1",
-    "postcss-value-parser": "^4.1.0",
-    "uniqs": "^2.0.0"
+    "postcss-value-parser": "^4.1.0"
   },
   "scripts": {
     "prebuild": "rimraf dist",

packages/postcss-minify-params/src/index.js

@@ -1,7 +1,6 @@
 import browserslist from 'browserslist';
 import valueParser, { stringify } from 'postcss-value-parser';
 import sort from 'alphanum-sort';
-import uniqs from 'uniqs';
 import { getArguments } from 'cssnano-utils';
 
 /**
@@ -28,6 +27,12 @@ function removeNode(node) {
   node.type = 'word';
 }
 
+function sortAndDedupe(items) {
+  return sort([...new Set(items)], {
+    insensitive: true,
+  }).join();
+}
+
 function transform(legacy, rule) {
   const ruleName = rule.name.toLowerCase();
 
@@ -80,9 +85,7 @@ function transform(legacy, rule) {
     }
   }, true);
 
-  rule.params = sort(uniqs(getArguments(params).map(split)), {
-    insensitive: true,
-  }).join();
+  rule.params = sortAndDedupe(getArguments(params).map(split));
 
   if (!rule.params.length) {
     rule.raws.afterName = '';

packages/postcss-unique-selectors/package.json

@@ -27,8 +27,7 @@
   "repository": "cssnano/cssnano",
   "dependencies": {
     "alphanum-sort": "^1.0.2",
-    "postcss-selector-parser": "^6.0.5",
-    "uniqs": "^2.0.0"
+    "postcss-selector-parser": "^6.0.5"
   },
   "bugs": {
     "url": "https://github.com/cssnano/cssnano/issues"

packages/postcss-unique-selectors/src/index.js

@@ -1,13 +1,14 @@
 import sort from 'alphanum-sort';
-import uniqs from 'uniqs';
 import selectorParser from 'postcss-selector-parser';
 
 function parseSelectors(selectors, callback) {
   return selectorParser(callback).processSync(selectors);
 }
 
 function unique(rule) {
-  rule.selector = sort(uniqs(rule.selectors), { insensitive: true }).join();
+  rule.selector = sort([...new Set(rule.selectors)], {
+    insensitive: true,
+  }).join();
 }
 
 function pluginCreator() {

yarn.lock

@@ -8124,11 +8124,6 @@ unicode-property-aliases-ecmascript@^2.0.0:
   resolved "https://registry.yarnpkg.com/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-2.0.0.tgz#0a36cb9a585c4f6abd51ad1deddb285c165297c8"
   integrity sha512-5Zfuy9q/DFr4tfO7ZPeVXb1aPoeQSdeFMLpYuFebehDAhbuevLs5yxSZmIFN1tP5F9Wl4IpJrYojg85/zgyZHQ==
 
-uniqs@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/uniqs/-/uniqs-2.0.0.tgz#ffede4b36b25290696e6e165d4a59edb998e6b02"
-  integrity sha1-/+3ks2slKQaW5uFl1KWe25mOawI=
-
 unique-filename@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/unique-filename/-/unique-filename-1.1.1.tgz#1d69769369ada0583103a1e6ae87681b56573230"
@@ -8221,11 +8216,6 @@ validate-npm-package-name@^3.0.0:
   dependencies:
     builtins "^1.0.3"
 
-vendors@^1.0.3:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/vendors/-/vendors-1.0.4.tgz#e2b800a53e7a29b93506c3cf41100d16c4c4ad8e"
-  integrity sha512-/juG65kTL4Cy2su4P8HjtkTxk6VmJDiOPBufWniqQ6wknac6jNiXS9vU+hO3wgusiyqWlzTbVHi0dyJqRONg3w==
-
 verror@1.10.0:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/verror/-/verror-1.10.0.tgz#3a105ca17053af55d6e270c1f8288682e18da400"