express dynamic routes

[amitgilad3]

I have a microservice that can handle dynamic routes.
i added dd-trace and now my application crashes every time somebody makes a request.
express": "^4.16.2"
express-promise-router: "^3.0.1",

example:
method: 'get'
route: '/:path(*)'

Error:
SyntaxError: Invalid regular expression: /^/(*)(?:/)?$/: Nothing to repeat
at new RegExp ()
at tokensToRegExp (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/node_modules/path-to-regexp/index.js:346:10)
at stringToRegexp (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/node_modules/path-to-regexp/index.js:288:10)
at pathToRegexp (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/node_modules/path-to-regexp/index.js:370:10)
at Object.test (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/src/plugins/router.js:131:19)
at Function.processParamsWithTrace [as process_params] (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/src/plugins/router.js:27:27)
at next (/Users/Amit/cocycles/bit/warehouse/node_modules/express/lib/router/index.js:275:10)
at Function.handle (/Users/Amit/cocycles/bit/warehouse/node_modules/express/lib/router/index.js:174:3)
at Function.handleWithTracer [as handle] (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/src/plugins/router.js:12:21)
at Layer.router (/Users/Amit/cocycles/bit/warehouse/node_modules/express/lib/router/index.js:47:12)
at web.wrapMiddleware (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/src/plugins/router.js:115:21)
at Scope._activate (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/src/scope/new/scope.js:38:14)
at Scope.activate (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/src/scope/new/base.js:13:17)
at Object.wrapMiddleware (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/src/plugins/util/web.js:90:27)
at callHandle (/Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/src/plugins/router.js:113:14)
at /Users/Amit/cocycles/bit/warehouse/node_modules/dd-trace/src/plugins/router.js:62:14

this only happens when i require dd-trace, when i run the application without data dog everything works
i think the issue is cause because im using express-promise-router and if so is there any solution ?

[rochdev]

I'll have to look into it as it's not clear which component would cause this. express uses path-to-regexp internally which is the same library that we use in the integration, and is the one throwing.

[rochdev]

I can replicate with only express and the same path, so definitely an issue with the integration's handling of paths.