rename repack to build

Author: TSMMark

package.json

@@ -9,11 +9,11 @@
     "lint-fix": "npm run lint -- --fix",
     "flow-typed-install": "flow-typed install",
     "flow": "flow",
-    "prepack": "npm run prepack:babel && npm run prepack:flow",
-    "prepack:babel": "babel src/ -d lib",
-    "prepack:flow": "flow-copy-source src lib",
-    "ci-test": "NODE_ENV=test npm run prepack && npm run flow && npm run jest",
-    "test": "NODE_ENV=test npm run prepack && npm run jest",
+    "build": "npm run build:babel && npm run build:flow",
+    "build:babel": "babel src/ -d lib",
+    "build:flow": "flow-copy-source src lib",
+    "ci-test": "NODE_ENV=test npm run build && npm run flow && npm run jest",
+    "test": "NODE_ENV=test npm run build && npm run jest",
     "jest": "jest --testMatch **/test/*.js --verbose",
     "test-update": "npm run test -- -u"
   },