[backend] fix: 修复异常处理和类型转换问题

frontend/node_modules/string-convert/test/test.hyphen2camel.js

@@ -0,0 +1,17 @@
+var should = require('should');
+var hyphen2camel = require('../hyphen2camel');
+
+describe('hyphen2camel', function () {
+  it('should convert min-width to minWidth', function () {
+    hyphen2camel('min-width').should.equal('minWidth');
+  });
+
+  it('should convert device-min-width to deviceMinWidth', function () {
+    hyphen2camel('device-min-width').should.equal('deviceMinWidth');
+  });
+
+  it('should convert -moz-transition to MozTransition', function () {
+    hyphen2camel('-moz-transition').should.equal('MozTransition');
+  });
+
+});