Here's a revised version: "How to link a lambda layer with a function in a serverless.ts file using the

When working with the serverless framework using the typescript template, a serverless.ts file is generated. I am currently integrating lambda layers with existing functions and encountering a typescript error.

The error message reads: "Type '{ Ref: string; }' is not assignable to type 'AwsLambdaLayers'. Object literal may only specify known properties, and 'Ref' does not exist in type 'AwsArn[]'."

    functions: {
        main: {
            handler: "handler.MainHandler",
            timeout: 300,
            layers: {
                Ref: "PrismaLambdaLayer",
            },
        },
    },

  layers: {
        prisma: {
            path: ".prisma-layer",
            description: "Layer for prisma clients",
            package: {
                patterns: [
                    "!nodejs/node_modules/@prisma/engines/*",
                    "!nodejs/node_modules/.prisma/**/libquery_engine-*",
                    "nodejs/node_modules/.prisma/**/libquery_engine-rhel-openssl-1.0.x.so.node",
                    "!nodejs/prisma/**",
                    "nodejs/prisma/*.db",
                ],
            },
        },
    },

For more information on AWS CloudFormation intrinsic function 'Ref', visit this link

typescriptserverless-frameworkprisma

Answer №1

Seems like it must be structured as an array, followed by the ability to include an object referencing the intrinsic ref.

layers: [{ Ref: "PrismaLambdaLayer" }],

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