Run clean before compile

Author: jasonkarns

package.json

@@ -22,10 +22,11 @@
   },
   "scripts": {
     "clean": "rm -rf generated dist lib coverage",
-    "postclean": "mkdir -p generated dist",
+    "postclean": "mkdirp generated dist",
     "compile:browser": "browserify src/index.js --standalone td --outfile $npm_package_config_build_file -p headerify -t babelify",
     "compile:browser:test": "browserify regression/browser-helper.js --outfile $npm_package_config_test_bundle -t babelify -t coffeeify --extension=\".coffee\" -t require-globify --ignore-missing",
     "compile:node": "babel src -d lib",
+    "precompile": "yarn clean",
     "compile": "yarn compile:node && yarn compile:browser && yarn compile:browser:test",
     "cover": "nyc --reporter=lcov --reporter=text-summary --require babel-core/register _mocha --ui mocha-given --reporter $npm_package_config_mocha_reporter --compilers coffee:coffee-script --recursive regression/node-helper.coffee regression/src",
     "cover:unit": "nyc --reporter=html yarn test:unit",
@@ -35,7 +36,7 @@
     "test:all": "yarn test:unit && yarn test && yarn test:browser && yarn test:example && yarn test:typescript",
     "test:browser": "testem ci",
     "test:unit": "teenytest",
-    "test:ci": "yarn clean && yarn compile && yarn style && yarn test:all && echo \"All done!\"",
+    "test:ci": "yarn compile && yarn style && yarn test:all && echo \"All done!\"",
     "test:typescript": "tsc --outDir generated/typescript -p regression/typescript && node generated/typescript/test.js",
     "test:example:webpack": "cd examples/webpack && npm install && npm test",
     "test:example:node": "cd examples/node && npm install && npm test",