Request Template - Post JSON Body With Single Quote

[dizard2001]

serverless-offline: 3.8.3
serverless: 1.4.0

When posting a Json object that contains a single quote in a property value, I was getting a bad request from the api-gateway. After researching I adjusted my code as per http://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-mapping-template-reference.html to use $util.escapeJavaScript(data).replaceAll("\'","'"). I've used this and it's successful when the lambda function is deployed into AWS, but when running as serverless offline I get the following error:

Serverless: POST /feedback (λ: feedback)
Serverless: The first request might take a few extra seconds
Serverless:
Serverless: Error while parsing template "application/json" for feedback
[ 'Error: this.replace is not a function on $util.escapeJavaScript($input.json('$')).replaceAll("\\'","'") at L/N 2:11',
'at Velocity.utils.mixin.getPropMethod (/Users/danderson/src/project-task-board-api/node_modules/serverless-offline/node_modules/velocityjs/src/compile/references.js:297:19)',
...

My serverless.yml:
feedback: handler: functions/feedback/post.handler events: - http: cors: true path: feedback method: post integration: lambda request: template: application/json: > { "body": "$util.escapeJavaScript($input.json('$')).replaceAll("\\'","'")", "headers": { #foreach($param in $input.params().header.keySet()) "$param": "$util.escapeJavaScript($input.params().header.get($param))" #if($foreach.hasNext),#end #end } }

I tried combing through both closed and open issues related to this and came across #50. If I'm understanding it correctly, the escape javascript call returns an object instead of a string(as in AWS) and so the function isn't defined. As per the recommendation of applying a JSON.stringify to the output, this is resulting in just an empty string. Any insight would be appreciated.

[dherault]

Hi @dizard2001 thanks for reporting this. It looks like a bug with the velocity parser helper functions. I believe it is trying to call this function but for some reason String#replace is not a function. It would be nice to know what is the type of the output of $util.escapeJavaScript(data) is.
The package we use to simulate $util.escapeJavaScript is js-string-escape as you can see here.

[dizard2001]

@dherault sorry for the late reply. The type of the output of $util.escapeJavascript(data) is a String. Additionally the format of the return after that call in my case is:
{"comment":"test","like":true,"userEmail":"Administrator@test.com","userName":"Martin Scorsese","enterpriseId":"dd051afc-c95a-46af-a89a-7ec011e1f9b5","enterpriseName":"Development"}

When I have more time I can dig into the issue a bit more.

[dherault]

Hi guys, it is still the case in v3.11.0 ? Thanks

[dherault]

ping :) v3.13.3