500 error caused by type conversion in schema #3
Description
Schema middleware doesnt check if value is truthy before trying to convert. Also doesnt do any guarding to throw a nice schema error instead of a 500.
SyntaxError: Unexpected token u\n at Object.parse (native)\n at Object.convertTo.object (/home/cute/Documents/scw/backend-2/node_modules/koa-framework/middleware/schema.js:23:17)\n at convertOne (/home/cute/Documents/scw/backend-2/node_modules/koa-framework/middleware/schema.js:30:36)\n at convertOne (/home/cute/Documents/scw/backend-2/node_modules/koa-framework/middleware/schema.js:35:19)\n at convertStringToType (/home/cute/Documents/scw/backend-2/node_modules/koa-framework/middleware/schema.js:48:21)\n at Object.<anonymous> (/home/cute/Documents/scw/backend-2/node_modules/koa-framework/middleware/schema.js:128:9)\n at next (native)