I’m developing functions using the NodeJS runtime using TypeScript, and my compiled JavaScript code goes to a /dist directory, with the main function residing in index.js. I tried the following configuration in project.yml:
environment: {}
parameters: {}
packages:
- name: sample
environment: { }
parameters: { }
annotations: { }
functions:
- name: hello
binary: false
main: 'dist/index.js'
runtime: 'nodejs:default'
web: true
parameters: { }
environment: { }
annotations: { }
limits: { }
It deploys without any apparent issue, but when I try to run the function, it cannot start, and I get the following error in the logs:
"2022-07-24T17:15:51.915241077Z stdout: Action entrypoint 'dist/index.js' is not a function."
If I change the main property to /dist I get something like this:
"2022-07-24T17:21:27.668525053Z stdout: Error: Cannot find module '/tmp/fP5MxYsZ'"
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I managed to solve this myself. It turns out that I had not set the main property in the package.json file to dist/index.js.
The main in the project.yml is for setting the name of the entrypoint function in case its name is different than main.
Props to resolving the issue. Typescript on doctl is quite lacking. Aside creating the initial project, there’s nothing more it does unless you are ready to deploy.
I’ve been working on a CLI library which improves the development experience when working with Typescript serverless projects.
It’s called docts. There are some pain points with doctl that docts addresses such as:
- No autoupdate of
project.yml - Managing different versions of libraries across several function
package.jsons
docts addresses these problems by:
-
Auto-updating
project.ymlwhen you add or remove functions to/from your project -
Allowing you to install all dependencies at one place (in the project’s package.json)
-
Providing a
buildcommand which builds all your functions to their respectivepackages/directories … and more
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