add hand-crafted regeneratorRuntime

Author: floatdrop

lib/babel.js

@@ -2,6 +2,8 @@
 var resolveFrom = require('resolve-from');
 var createEspowerPlugin = require('babel-plugin-espower/create');
 var requireFromString = require('require-from-string');
+var fs = require('fs');
+var join = require('path').join;
 var hasGenerators = parseInt(process.version.slice(1), 10) > 0;
 var path = process.argv[2];
 
@@ -25,4 +27,10 @@ var options = {
 };
 
 var transpiled = babel.transformFileSync(path, options);
+
+if (!hasGenerators) {
+	var runtime = fs.readFileSync(join(__dirname, '/regeneratorRuntime.js'));
+	transpiled.code = runtime + '\n' + transpiled.code;
+}
+
 requireFromString(transpiled.code, path);