TypeError after functions within a service are packaged

[kchecoBasis]

Getting a TypeError exception after warmup is invoked. We have a multi-service repo.

.warmup/peakHoursLambdaWarmer/index.js
4
`+new Array(N).join(" ")+"^"}}return null}function Z(g){var d=K(g),E=L();E&&E._handle&&E._handle.set
^ TypeError Cannot set property 'warmUp' of undefined

node: 14.x
serverless-bundle: 5.3.0
serverless-plugin-warmup: 7.1.0

[thiagosanches]

Same here.

[victorcsciandt]

Same problem here

{
    "errorType": "Runtime.HandlerNotFound",
    "errorMessage": ".warmup/default/index.warmUp is undefined or not exported",
    "stack": [
        "Runtime.HandlerNotFound: .warmup/default/index.warmUp is undefined or not exported",
        "    at Object.module.exports.load (/var/runtime/UserFunction.js:246:11)",
        "    at Object.<anonymous> (/var/runtime/index.js:43:30)",
        "    at Module._compile (internal/modules/cjs/loader.js:1085:14)",
        "    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)",
        "    at Module.load (internal/modules/cjs/loader.js:950:32)",
        "    at Function.Module._load (internal/modules/cjs/loader.js:790:12)",
        "    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:75:12)",
        "    at internal/main/run_main_module.js:17:47"
    ]
}

• node: 14.x
• serverless-plugin-warmup: 6.2.1
• serverless: 2.23.x

[juanjoDiaz]

Hi guys,
Sorry for the slow response.

Are all of you using the bundle or webpack plugin?
Are you declaring warmup after those plugins?

Can you provide a repo where I can reproduce this?

[kchecoBasis]

This is how we have our plugins listed in our common.serverless.yml in project root.

plugins:
    - serverless-bundle
    - serverless-offline
    - serverless-domain-manager
    - serverless-plugin-warmup

Then this is how we imported the plugins in our service config file as such:

plugins: ${file(../../common.serverless.yml):plugins}

[juanjoDiaz]

Hi @kchecoBasis ,

I don't know how to reproduce the issue.
So, without a repo to reproduce I can't do much...

[vtsigelnikov]

Hi, I fixed it with the following config:

plugins:
  - serverless-bundle
  - serverless-plugin-warmup

custom:
  bundle:
    esbuild: true

• node: 14
• serverless-bundle: 5.3.0
• serverless-plugin-warmup: 6.2.1
• serverless: 3.15.2

@kchecoBasis, @thiagosanches, @victorcsciandt maybe this will solve your problem

but, it doesn't work with serverless-plugin-warmup: 7.1.0, error:

{
    "errorType": "Runtime.ImportModuleError",
    "errorMessage": "Error: Cannot find module 's_warmUpPluginDefault'\nRequire stack:\n- /var/runtime/UserFunction.js\n- /var/runtime/index.js",
    "stack": [
        "Runtime.ImportModuleError: Error: Cannot find module 's_warmUpPluginDefault'",
        "Require stack:",
        "- /var/runtime/UserFunction.js",
        "- /var/runtime/index.js",
        "    at _loadUserApp (/var/runtime/UserFunction.js:202:13)",
        "    at Object.module.exports.load (/var/runtime/UserFunction.js:242:17)",
        "    at Object.<anonymous> (/var/runtime/index.js:43:30)",
        "    at Module._compile (internal/modules/cjs/loader.js:1085:14)",
        "    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)",
        "    at Module.load (internal/modules/cjs/loader.js:950:32)",
        "    at Function.Module._load (internal/modules/cjs/loader.js:790:12)",
        "    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:75:12)",
        "    at internal/main/run_main_module.js:17:47"
    ]
}

[juanjoDiaz]

This seems a problem between the plugins not using the lifecycle events consistently.
This is something that I already raised to the Serverless Framework maintainers.
Until, they are more prescriptive on how plugins should use lifecycles events, we can just workaround these kind of issue.

As said, until I have a project to reproduce, I can't do anything on this.

[julbr]

@juanjoDiaz - I think if you just create a blank project from this base:
serverless create --template aws-nodejs-typescript --path aws-serverless-typescript-api

then just install serverless-plugin-warmup and add it at the end of plugins in serverless.ts, try to deploy that and you'll be able to reproduce the issue.

[juanjoDiaz]

Hi all,

After some research and looking deeply into #314, I found that the issue is in the serverless dashboard plugin which is using deprecated settings of serverless. I created the above PR and I hope that it gets merged soon.

[petersaalbrink]

I am experiencing the same issue.

A log entry from CloudWatch for one of my WarmUp Lambda functions using version 6.2.1 of the plugin:

{
    "errorType": "Runtime.ImportModuleError",
    "errorMessage": "Error: Cannot find module 's_warmUpPluginDefault'\nRequire stack:\n- /var/runtime/UserFunction.js\n- /var/runtime/Runtime.js\n- /var/runtime/index.js",
    "stack": [
        "Runtime.ImportModuleError: Error: Cannot find module 's_warmUpPluginDefault'",
        "Require stack:",
        "- /var/runtime/UserFunction.js",
        "- /var/runtime/Runtime.js",
        "- /var/runtime/index.js",
        "    at _loadUserApp (/var/runtime/UserFunction.js:221:13)",
        "    at Object.module.exports.load (/var/runtime/UserFunction.js:279:17)",
        "    at Object.<anonymous> (/var/runtime/index.js:43:34)",
        "    at Module._compile (internal/modules/cjs/loader.js:1085:14)",
        "    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)",
        "    at Module.load (internal/modules/cjs/loader.js:950:32)",
        "    at Function.Module._load (internal/modules/cjs/loader.js:790:12)",
        "    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:75:12)",
        "    at internal/main/run_main_module.js:17:47"
    ]
}

And for version 7.2.0 of the plugin:

{
    "errorType": "Runtime.ImportModuleError",
    "errorMessage": "Error: Cannot find module 's_warmUpPluginDefault'\nRequire stack:\n- /var/runtime/index.mjs",
    "stack": [
        "Runtime.ImportModuleError: Error: Cannot find module 's_warmUpPluginDefault'",
        "Require stack:",
        "- /var/runtime/index.mjs",
        "    at _loadUserApp (file:///var/runtime/index.mjs:726:17)",
        "    at async Object.module.exports.load (file:///var/runtime/index.mjs:741:21)",
        "    at async file:///var/runtime/index.mjs:781:15",
        "    at async file:///var/runtime/index.mjs:4:1"
    ]
}

I will watch for updates on the PR for serverless dashboard plugin.

[juanjoDiaz]

Closing as the PR was merged.
Whenever the new dashboard plugin is added to the main framework, the issue should be solved.

[petersaalbrink]

Hi @juanjoDiaz,

Thank you for the PR on dashboard-plugin.

I'm still facing the issue, and since it might take a while for your changes to be added to the main framework, I was wondering if you are able to advise on a workaround.

I've upgraded to Serverless v3.22.0 and serverless-plugin-warmup v8.0.0.

The error message I see after invocation of the WarmUp Lambda function is:

{
    "errorType": "Runtime.ImportModuleError",
    "errorMessage": "Error: Cannot find module 's_warmUpPluginDefault'\nRequire stack:\n- /var/runtime/index.mjs",
    "stack": [
        "Runtime.ImportModuleError: Error: Cannot find module 's_warmUpPluginDefault'",
        "Require stack:",
        "- /var/runtime/index.mjs",
        "    at _loadUserApp (file:///var/runtime/index.mjs:726:17)",
        "    at async Object.module.exports.load (file:///var/runtime/index.mjs:741:21)",
        "    at async file:///var/runtime/index.mjs:781:15",
        "    at async file:///var/runtime/index.mjs:4:1"
    ]
}

I've also added serverless-bundle to my Serverless configuration, but without any effect.

Could you please take a look at this? Any help is much appreciated.

[juanjoDiaz]

This issue is a duplicate of #293.

Look at the last message there for a workaround to manually add the s_warmUpPluginDefault file to the warmer lambda.

[petersaalbrink]

Perfect, thank you @juanjoDiaz, and sorry for not looking at the other issues! My issue is resolved now.