Merge pull request #21 from byr-gdp/fix

fix: build failed when output directory not exists

package.json

@@ -22,6 +22,7 @@
  "babel-runtime": "^6.26.0",
  "fs-extra": "^0.30.0",
  "less": "^2.7.1",
+ "mkdirp": "^0.5.1",
  "rollup": "^0.34.7",
  "rollup-pluginutils": "^1.5.1"
  },

src/index.js

@@ -3,7 +3,21 @@ import { dirname } from 'path';
 import less from 'less';
 import { createFilter } from 'rollup-pluginutils';
 import { insertStyle } from './style.js';
+import mkdirp from 'mkdirp';
 
+/**
+ * 根据路径写入文件，文件夹不存在则创建
+ * @param {String} path 路径
+ * @param {String} contents 待写入文件内容
+ * @param {Function} cb 回调函数
+ */
+const writeFile = (path, contents, cb) => {
+ mkdirp(dirname(path), function (err) {
+ if (err && typeof cb === 'function') return cb(err);
+
+ fs.writeFile(path, contents, cb);
+ });
+}
 
 let renderSync = (code, option) => {
  return less.render(code, option)
@@ -51,7 +65,7 @@ export default function plugin (options = {}) {
  //clean the output file
  fs.removeSync(options.output);
  }
- fs.appendFileSync(options.output, css);
+ writeFile(options.output, css);
  }
 
  let exportCode = '';