Refactor prefix option

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to `rollup-plugin-scss` will be documented in this file.
 
 ## [Unreleased]
 
+## [2.1.0] - 2019-12-22
+### Added
+- Add `prefix` option @jackprosser
+
 ## [2.0.0] - 2019-12-22
 ### Changed
 - Add `node_modules/` in includePaths by default
@@ -14,7 +18,8 @@ All notable changes to `rollup-plugin-scss` will be documented in this file.
 ### Update
 - Update `ongenerate` to `generateBundle`
 
-[Unreleased]: https://github.com/thgh/rollup-plugin-scss/compare/v2.0.0...HEAD
+[Unreleased]: https://github.com/thgh/rollup-plugin-scss/compare/v2.1.0...HEAD
+[2.1.0]: https://github.com/thgh/rollup-plugin-scss/compare/v2.0.0...v2.1.0
 [2.0.0]: https://github.com/thgh/rollup-plugin-scss/compare/v1.0.0...v2.0.0
 [1.0.0]: https://github.com/thgh/rollup-plugin-scss/compare/v0.0.1...v1.0.0
 [0.0.1]: https://github.com/thgh/rollup-plugin-scss/releases

index.es.js

@@ -7,6 +7,7 @@ export default function css (options = {}) {
   let dest = options.output
 
   const styles = {}
+  const prefix = options.prefix ? options.prefix + '\n' : ''
   let includePaths = options.includePaths || ['node_modules/']
   includePaths.push(process.cwd())
 
@@ -15,11 +16,10 @@ export default function css (options = {}) {
     if (scss.length) {
       includePaths = includePaths.filter((v, i, a) => a.indexOf(v) === i)
       try {
-        const cssOptions = Object.assign({
+        const css = require('node-sass').renderSync(Object.assign({
+          data: prefix + scss,
           includePaths
-        }, options);
-        cssOptions.data = options.prefix ? options.prefix + scss : scss;
-        const css = require('node-sass').renderSync(cssOptions).css.toString()
+        }, options)).css.toString()
         // Possibly process CSS (e.g. by PostCSS)
         if (typeof options.processor === 'function') {
           return options.processor(css, styles)