SLS Offline don't run webpack build with TypeScript

[s-stefanov]

This is a Bug Report

Description

• What went wrong? Having SLS project with TypeScript and Webpack. Webpack build didn't run before sls offline invoke. When I invoke sls package, the functions are transpiled and packaged
• What did you expect should have happened? Webpack build should run before func host start
• What was the config you used? Uploading my three configs https://pastebin.com/gizzsRZQ - serverless.yml https://pastebin.com/86LGJyZF - webpack.config.js https://pastebin.com/iPTfqUNw - .babelrc
• What stacktrace or error message from your provider did you see? 0 functions found. The function.json is generated, but it points to not existed .js file

Similar or dependent issues:

• 12345

Additional Data

• Serverless Framework Version you're using: 1.49
• Serverless CLI Version you're using:
• Serverless Azure Plugin Version you're using: 1.0.2
• Operating System: MacOS 10.14
• Stack Trace:
• Provider Error messages:

[tbarlow12]

We have not added support for TypeScript just yet. It's on the roadmap. #366

[s-stefanov]

Yes, I understand that. But when I run sls deploy or sls package the correct zip file is created (with JS files) and uploaded to Azure. Functions are executed correctly also. My problem is to run Webpack build on local sls offline before func host start command. Can this be made?

[s-stefanov]

@tbarlow12 The same issue is with modern JavaScript syntax and babel/webpack build to support it. How can I run the webpack on sls offline?

[cyppher]

@tbarlow12 We have written our functions in ES6+ including ES-modules (import). Running sls deploy does in fact transpile code perfectly, however sls offline gives us Javascript errors about not supported ES6 code (such as import / export).

How can we run sls offline and make sure Webpack / Babel is transpiling code as it does with sls deploy?