deploying lambda with cdk doesn't recognize sdk nodejs v3

Question

I am learning aws lambda, cdk and dynamodb and as a test am trying to update a lambda function code written in aws-sdk js v2 to v3, but after deploying it it doesn't work. I copy pasted the same code in a test lambda function directly in the web console and it worked fine. Here is the error shown in cloudwatch:

{
    "errorType": "Runtime.ImportModuleError",
    "errorMessage": "Error: Cannot find module '@aws-sdk/client-dynamodb'\nRequire stack:\n- /var/task/hitcounter.js\n- /var/runtime/UserFunction.js\n- /var/runtime/index.js",
    "stack": [
        "Runtime.ImportModuleError: Error: Cannot find module '@aws-sdk/client-dynamodb'",
        "Require stack:",
        "- /var/task/hitcounter.js",
        "- /var/runtime/UserFunction.js",
        "- /var/runtime/index.js",
        "    at _loadUserApp (/var/runtime/UserFunction.js:100:13)",
        "    at Object.module.exports.load (/var/runtime/UserFunction.js:140:17)",
        "    at Object.<anonymous> (/var/runtime/index.js:43:30)",
        "    at Module._compile (internal/modules/cjs/loader.js:1072:14)",
        "    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1101:10)",
        "    at Module.load (internal/modules/cjs/loader.js:937:32)",
        "    at Function.Module._load (internal/modules/cjs/loader.js:778:12)",
        "    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:76:12)",
        "    at internal/main/run_main_module.js:17:47"
    ]
}

is there a cdk related settings I have to set or change that allows me to use @aws-sdk v3? I don't want to use v2 since I am starting a project from start and rather use newer API's.

what is the code you have for defining the lambda in your stack? The image that the lambda is defined in may not yet have the v3 sdk as part of its default image. — lynkfox

moltar moltar · Accepted Answer · 2021-10-01T11:40:55

Lambda environment doesn’t have SDK v3. You must bundle it. Use NodejsLambda construct which will bundle the code for you using esbuild.

deploying lambda with cdk doesn't recognize sdk nodejs v3

2 Answers