New Rollup configuration

package.json

@@ -28,8 +28,8 @@
   },
   "unpkg": "./dist/shareon.min.js",
   "scripts": {
-    "build": "rollup -c ./rollup/rollup.config.prod.js",
+    "build": "rollup -c",
-    "dev": "rollup -w -c ./rollup/rollup.config.dev.js",
+    "dev": "rollup -w -c",
     "pretest": "run-s build",
     "test:lint": "eslint-ci --ext .js,.ts ./src/",
     "test:size": "size-limit",

rollup.config.js

@@ -0,0 +1,89 @@
+import license from 'rollup-plugin-license';
+import postcss from 'rollup-plugin-postcss';
+import postcssPluginBanner from 'postcss-banner';
+import postcssPluginCssnano from 'cssnano';
+import strip from '@rollup/plugin-strip';
+import { terser } from 'rollup-plugin-terser';
+import typescript from '@rollup/plugin-typescript';
+
+const isDev = process.env.ROLLUP_WATCH || process.env.NODE_ENV === 'development';
+
+const pkg = require('./package.json');
+
+const inputFile = './src/index.ts';
+const outputDir = isDev ? './dev' : './dist/';
+
+const bannerText = `${pkg.name} v${pkg.version} by Nikita Karamov\n${pkg.homepage}`;
+
+/*
+ * PLUGINS
+ */
+
+const plugins = [];
+
+plugins.push(typescript());
+
+if (!isDev) {
+  plugins.push(strip({
+    debugger: true,
+    include: ['**/*.js', '**/*.ts'],
+    functions: ['console.log', 'console.debug', 'assert.*'],
+    sourceMap: false,
+  }));
+
+  plugins.push(license({
+    banner: {
+      commentStyle: 'ignored',
+      content: bannerText,
+    },
+  }));
+}
+
+plugins.push(postcss({
+  extract: `${pkg.name}.css`,
+  plugins: [
+    (!isDev) && postcssPluginCssnano({
+      preset: 'default',
+    }),
+    postcssPluginBanner({
+      banner: bannerText,
+      important: true,
+    }),
+  ],
+}));
+
+/*
+ * OUTPUTS
+ */
+
+const output = [];
+
+if (isDev) {
+  output.push({
+    name: pkg.name,
+    format: 'iife',
+    file: `${outputDir}${pkg.name}.js`,
+  });
+} else {
+  output.push({
+    name: pkg.name,
+    format: 'cjs',
+    file: `${outputDir}${pkg.name}.cjs`,
+  });
+  output.push({
+    name: pkg.name,
+    format: 'iife',
+    file: `${outputDir}${pkg.name}.min.js`,
+    plugins: [terser({ output: { comments: false } })],
+  });
+}
+
+/*
+ * EXPORT
+ */
+
+export default {
+  input: inputFile,
+  output,
+  plugins,
+};

rollup/plugins.js

@@ -1,56 +0,0 @@
-import path from 'path';
-
-/* eslint-disable import/no-extraneous-dependencies */
-import postcssPluginBanner from 'postcss-banner';
-import postcssPluginCssnano from 'cssnano';
-import rollupPluginLicense from 'rollup-plugin-license';
-import rollupPluginPostcss from 'rollup-plugin-postcss';
-import rollupPluginStrip from '@rollup/plugin-strip';
-import { terser as rollupPluginTerser } from 'rollup-plugin-terser';
-import rollupPluginTypescript from '@rollup/plugin-typescript';
-
-// TODO: remove rule after changing the Rollup config
-// eslint-disable-next-line import/no-dynamic-require
-const pkg = require(path.join(process.cwd(), 'package.json'));
-const bannerText = `${pkg.name} v${pkg.version} by Nikita Karamov
-${pkg.homepage}`;
-
-export const license = () => rollupPluginLicense({
-  banner: {
-    commentStyle: 'ignored',
-    content: bannerText,
-  },
-});
-
-/**
- * @param {boolean|string} file
- * @param {boolean} minify
- */
-export const postcss = (file = true, minify) => rollupPluginPostcss({
-  extract: file,
-  plugins: [
-    minify && postcssPluginCssnano({
-      preset: 'default',
-    }),
-    postcssPluginBanner({
-      banner: bannerText,
-      important: true,
-    }),
-  ],
-});
-
-export const strip = () => rollupPluginStrip({
-  debugger: true,
-  include: ['**/*.js', '**/*.ts'],
-  functions: ['console.log', 'console.debug', 'assert.*'],
-  sourceMap: false,
-});
-
-export const terser = () => rollupPluginTerser({
-  output: {
-    comments: false,
-    ecma: 5,
-  },
-});
-
-export const typescript = () => rollupPluginTypescript();

rollup/rollup.config.dev.js

@@ -1,18 +0,0 @@
-import { postcss, typescript } from './plugins';
-
-const input = './src/index.ts';
-const name = 'shareon';
-const outputDir = './dev/';
-
-export default {
-  input,
-  output: {
-    name,
-    format: 'iife',
-    file: `${outputDir}${name}.js`,
-  },
-  plugins: [
-    typescript(),
-    postcss(`${name}.css`, false),
-  ],
-};

rollup/rollup.config.prod.js

@@ -1,30 +0,0 @@
-import {
-  license, postcss, strip, terser, typescript,
-} from './plugins';
-
-const input = './src/index.ts';
-const name = 'shareon';
-const outputDir = './dist/';
-
-export default {
-  input,
-  output: [
-    {
-      name,
-      format: 'cjs',
-      file: `${outputDir}${name}.cjs`,
-    },
-    {
-      name,
-      format: 'iife',
-      file: `${outputDir}${name}.min.js`,
-      plugins: [terser()],
-    },
-  ],
-  plugins: [
-    typescript(),
-    strip(),
-    postcss(`${name}.min.css`, true),
-    license(),
-  ],
-};