Add external transform()

Author: danburzo

dist/index.js

@@ -2,20 +2,21 @@
 
 function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
 
-var rollupPluginutils = require('rollup-pluginutils');
-require('postcss');
-var fs = _interopDefault(require('fs'));
+var fs = _interopDefault(require('fs-extra'));
+var path = _interopDefault(require('path'));
+var utils = _interopDefault(require('rollup-pluginutils'));
 
 var index = (opts) => {
 
 	let styles = {};
 	let bundles = {};
 
 	const options = Object.assign({
-		include: ['**/*.css']
+		include: ['**/*.css'],
+		transform: code => code
 	}, opts);
 
-	const filter = rollupPluginutils.createFilter(options.include, options.exclude);
+	const filter = utils.createFilter(options.include, options.exclude);
 
 	return {
 		name: 'cssbundle',
@@ -25,9 +26,9 @@ var index = (opts) => {
 			return await fs.readFile(id, 'utf8');
 		},
 
-		transform(code, id) {
+		async transform(code, id) {
 			if (!filter(id)) return;
-			styles[id] = code;
+			styles[id] = await options.transform(code);
 			return '';
 		},
 
@@ -40,8 +41,14 @@ var index = (opts) => {
 		},
 
 		onwrite(opts) {
-			let dest = options.file || opts.file.replace(/\.js$/, '.css');
-			fs.writeFile(dest, bundles[opts.file]);
+			fs.outputFile(
+				options.output || 
+				path.join(
+					path.dirname(opts.file), 
+					path.basename(opts.file, path.extname(opts.file)) + '.css'
+				),
+				bundles[opts.file]
+			);
 		}
 	}
 }

rollup.config.js

@@ -0,0 +1,10 @@
+import pkg from './package.json';
+
+export default {
+	input: 'src/index.js',
+	output: {
+		format: 'cjs',
+		file: pkg.main,
+		external: Object.keys(pkg.dependencies)
+	}
+}

src/index.js

@@ -1,17 +1,18 @@
-import { createFilter } from 'rollup-pluginutils';
-import postcss from 'postcss';
-import fs from 'fs';
+import fs from 'fs-extra';
+import path from 'path';
+import utils from 'rollup-pluginutils';
 
 export default (opts) => {
 
 	let styles = {};
 	let bundles = {};
 
 	const options = Object.assign({
-		include: ['**/*.css']
+		include: ['**/*.css'],
+		transform: code => code
 	}, opts);
 
-	const filter = createFilter(options.include, options.exclude);
+	const filter = utils.createFilter(options.include, options.exclude);
 
 	return {
 		name: 'cssbundle',
@@ -21,9 +22,9 @@ export default (opts) => {
 			return await fs.readFile(id, 'utf8');
 		},
 
-		transform(code, id) {
+		async transform(code, id) {
 			if (!filter(id)) return;
-			styles[id] = code;
+			styles[id] = await options.transform(code);
 			return '';
 		},
 
@@ -36,8 +37,14 @@ export default (opts) => {
 		},
 
 		onwrite(opts) {
-			let dest = options.file || opts.file.replace(/\.js$/, '.css');
-			fs.writeFile(dest, bundles[opts.file]);
+			fs.outputFile(
+				options.output || 
+				path.join(
+					path.dirname(opts.file), 
+					path.basename(opts.file, path.extname(opts.file)) + '.css'
+				),
+				bundles[opts.file]
+			);
 		}
 	}
 }

yarn.lock

@@ -10,12 +10,6 @@
   version "9.6.6"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-9.6.6.tgz#439b91f9caf3983cad2eef1e11f6bedcbf9431d2"
 
-ansi-styles@^3.2.1:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
-  dependencies:
-    color-convert "^1.9.0"
-
 arr-diff@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-2.0.0.tgz#8f3b827f955a8bd669697e4a4256ac3ceae356cf"
@@ -38,28 +32,6 @@ braces@^1.8.2:
     preserve "^0.2.0"
     repeat-element "^1.1.2"
 
-chalk@^2.3.2:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.0.tgz#a060a297a6b57e15b61ca63ce84995daa0fe6e52"
-  dependencies:
-    ansi-styles "^3.2.1"
-    escape-string-regexp "^1.0.5"
-    supports-color "^5.3.0"
-
-color-convert@^1.9.0:
-  version "1.9.1"
-  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.1.tgz#c1261107aeb2f294ebffec9ed9ecad529a6097ed"
-  dependencies:
-    color-name "^1.1.1"
-
-color-name@^1.1.1:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
-
-escape-string-regexp@^1.0.5:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
-
 estree-walker@^0.3.0:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-0.3.1.tgz#e6b1a51cf7292524e7237c312e5fe6660c1ce1aa"
@@ -106,6 +78,14 @@ for-own@^0.1.4:
   dependencies:
     for-in "^1.0.1"
 
+fs-extra@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-5.0.0.tgz#414d0110cdd06705734d055652c5411260c31abd"
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
 glob-base@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/glob-base/-/glob-base-0.3.0.tgz#dbb164f6221b1c0b1ccf82aea328b497df0ea3c4"
@@ -119,9 +99,9 @@ glob-parent@^2.0.0:
   dependencies:
     is-glob "^2.0.0"
 
-has-flag@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+graceful-fs@^4.1.2, graceful-fs@^4.1.6:
+  version "4.1.11"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
 is-buffer@^1.1.5:
   version "1.1.6"
@@ -181,6 +161,12 @@ isobject@^2.0.0:
   dependencies:
     isarray "1.0.0"
 
+jsonfile@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"
+  optionalDependencies:
+    graceful-fs "^4.1.6"
+
 kind-of@^3.0.2:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-3.2.2.tgz#31ea21a734bab9bbb0f32466d893aea51e4a3c64"
@@ -233,14 +219,6 @@ parse-glob@^3.0.4:
     is-extglob "^1.0.0"
     is-glob "^2.0.0"
 
-postcss@^6.0.21:
-  version "6.0.21"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-6.0.21.tgz#8265662694eddf9e9a5960db6da33c39e4cd069d"
-  dependencies:
-    chalk "^2.3.2"
-    source-map "^0.6.1"
-    supports-color "^5.3.0"
-
 preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
@@ -284,12 +262,6 @@ rollup@^0.58.1:
     "@types/estree" "0.0.38"
     "@types/node" "*"
 
-source-map@^0.6.1:
-  version "0.6.1"
-  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
-
-supports-color@^5.3.0:
-  version "5.4.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.4.0.tgz#1c6b337402c2137605efe19f10fec390f6faab54"
-  dependencies:
-    has-flag "^3.0.0"
+universalify@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.1.tgz#fa71badd4437af4c148841e3b3b165f9e9e590b7"