Cannot locate handler error message is not sufficient enough

[nira40seas]

The following error message in typescript.js doesn't reflect the full path but only the filename.

Error: Typescript compilation failed. Please ensure handlers exists with ext .ts or .js
at /home/runner/work/40Seas/40Seas/node_modules/serverless-plugin-typescript/dist/src/typescript.js:71:15

As a result it is hard to know where the problem is, and whether the code is actually looking in the right place.

[individual11]

I've run into this just recently using namespaces in the handler.ts file. It hates using multiple dots, and I had to put all my functions on the root of the file to get around it.

[alsohi24]

In my case, the error started when I installed serverless-dynamodb-local. The only modification I made was to the serverless.yml file to resolve the issue. I placed the TypeScript plugin below dynamodb-offline, and then I moved the functions above the custom DynamoDB configuration.

service:
  name: swapi-nestjs

plugins:
  - serverless-offline
  - serverless-dynamodb-local
  - serverless-plugin-typescript
  - serverless-plugin-optimize

provider:
  name: aws
  Runtime: nodejs20.x
  region: us-east-1
  environment:
    USERS_TABLE: UsersTable

functions:
  createUser:
    handler: src/user/interface/create-user.handler.ts
    events:
      - http:
          path: users
          method: post
  getUserById:
    handler: src/user/interface/get-user-by-id.handler
    events:
      - http:
          path: users/{id}
          method: get

custom:
  dynamodb:
    stages:
      - dev
    start:
      port: 8000
      inMemory: true
      migrate: true      

resources:
  Resources:
    UsersTable:
      Type: AWS::DynamoDB::Table
      Properties:
        TableName: ${self:provider.environment.USERS_TABLE}
        AttributeDefinitions:
          - AttributeName: id
            AttributeType: S
        KeySchema:
          - AttributeName: id
            KeyType: HASH
        BillingMode: PAY_PER_REQUEST