Support non TS handlers

[ro-savage]

This plugin should handle having handles with both the .js and .ts extension, and simply not transpile the .js files.

I wanted to convert my current serverless project to TS, and only rename TS files once I've updated them.

Currently we get an error that looks like

Serverless: Using local tsconfig.json
{ file: undefined,
  start: undefined,
  length: undefined,
  messageText: 'File \'myfunction.ts\' not found.',
  category: 1,
  code: 6053 }

  Type Error ---------------------------------------------

  Cannot read property 'getLineAndCharacterOfPosition' of undefined

     For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.

[ro-savage]

Along the same lines, it doesn't appear to follow imports of non-ts files.

[ 'Error: Cannot find module \'./helpers/helpers\'',
  'at Function.Module._resolveFilename (module.js:555:15)',
  'at Function.Module._load (module.js:482:25)',
  'at Module.require (module.js:604:17)',
...

Renaming helpers.js to helpers.ts solves the issue

[ro-savage]

PR #79 fixes this by allowing importing either the .js or the .ts based on what exists.

[MikeBlair]

👍 This would be useful for us as well.

[kiesel]

I'd like to see this supported, too. Usecase: we use custom authorizers that we ship as a npm module; the code is written in TypeScript and transpiled to JavaScript, but then it cannot be used because it won't be picked up.

The workaround currently is to ship it as npm module, but include the source and reference the source file in the handler: line, thus having the main project's build re-build the authorizer again.

[Pithikos]

Same issue when trying to use a mix of functions in Python and Javascript. It tries to transpile python functions

{ file: undefined,
  start: undefined,
  length: undefined,
  messageText: 'File \'api.handler.ts\' not found.',
  category: 1,
  code: 6053,
  reportsUnnecessary: undefined }

[divyenduz]

🎉 This issue has been resolved in version 1.1.8 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀