chore: cleanup unused rollup and postcss deps (#550)

Author: pskelin

packages/main/config/postcss.components/postcss.config.js

@@ -1,18 +1,18 @@
-const postcssNesting = require('postcss-nesting');
 const postcssAddFallback = require('../../lib/postcss-add-fallback/index.js');
 const postcssCSStoESM = require('../../lib/postcss-css-to-esm/index.js');
 const cssnano = require('cssnano');
 
 module.exports = {
 	plugins: [
-		postcssNesting(),
 		postcssAddFallback({importFrom: "./dist/css/themes/sap_fiori_3/parameters-bundle.css"}),
-	cssnano({preset: [
-		'default', {
-			mergeLonghand: false, // https://github.com/cssnano/cssnano/issues/675
-			mergeRules: false, // https://github.com/cssnano/cssnano/issues/730
-		},
-	]}, ),
+		cssnano({
+			preset: [
+				'default', {
+					mergeLonghand: false, // https://github.com/cssnano/cssnano/issues/675
+					mergeRules: false, // https://github.com/cssnano/cssnano/issues/730
+				},
+			]
+		}),
 		postcssCSStoESM(),
 	]
 };

packages/main/package.json

@@ -126,9 +126,7 @@
     "postcss": "^7.0.14",
     "postcss-cli": "^6.1.1",
     "postcss-combine-duplicated-selectors": "^7.0.0",
-    "postcss-csso": "^3.0.0",
     "postcss-import": "^12.0.1",
-    "postcss-nesting": "^7.0.0",
     "puppeteer": "^1.11.0",
     "rimraf": "^2.6.2",
     "rollup": "^1.1.2",
@@ -138,7 +136,6 @@
     "rollup-plugin-less": "^1.1.2",
     "rollup-plugin-node-resolve": "^4.0.0",
     "rollup-plugin-notify": "^1.1.0",
-    "rollup-plugin-postcss": "^2.0.3",
     "rollup-plugin-string": "^2.0.2",
     "rollup-plugin-terser": "^4.0.3",
     "rollup-plugin-url": "^2.2.0",

packages/main/rollup.config.js

@@ -7,11 +7,6 @@ import url from "rollup-plugin-url";
 import { terser } from "rollup-plugin-terser";
 import notify from 'rollup-plugin-notify';
 import filesize from 'rollup-plugin-filesize';
-import postcss from 'rollup-plugin-postcss';
-import postcssImport from 'postcss-import';
-import postcssNesting from 'postcss-nesting';
-import csso from 'postcss-csso';
-
 
 const DIST = path.normalize("dist");
 const DIST_PLAYGROUND = path.normalize("dist/resources/sap/ui/webcomponents/main");