core: ./core is not exported in package.json

What is the problem?

When migrating to cdk 2.1.0, i have the following error:

Error: Package subpath ‘./core’ is not defined by “exports” in /…/node_modules/aws-cdk-lib/package.json

(and actually, it is not in the package.json)

Reproduction Steps

In my code:

import { CfnOutput, SecretValue, Stage, Stack } from 'aws-cdk-lib/core';

Use cdk 2.1.0 in package.json:

"devDependencies": {
    "aws-cdk": "2.1.0",
  },
  "dependencies": {
    "aws-cdk-lib": "2.1.0",
    "constructs": "10.0.12",
  }

Then try to synthesise:

cdk synth

Gives the error:

Error: Package subpath ‘./core’ is not defined by “exports” in /…/node_modules/aws-cdk-lib/package.json

What did you expect to happen?

I expected to have get the template synthesised.

What actually happened?

The following error (line 18 is the import statement above):

Error: Package subpath ‘./core’ is not defined by “exports” in /…/node_modules/aws-cdk-lib/package.json at new NodeError (node:internal/errors:371:5) at throwExportsNotFound (node:internal/modules/esm/resolve:416:9) at packageExportsResolve (node:internal/modules/esm/resolve:669:3) at resolveExports (node:internal/modules/cjs/loader:482:36) at Function.Module._findPath (node:internal/modules/cjs/loader:522:31) at Function.Module._resolveFilename (node:internal/modules/cjs/loader:919:27) at Function.Module._load (node:internal/modules/cjs/loader:778:27) at Module.require (node:internal/modules/cjs/loader:999:19) at require (node:internal/modules/cjs/helpers:102:18) at Object.<anonymous> (/…/bin/mycode.ts:18:1)

CDK CLI Version

2.1.0

Framework Version

No response

Node.js Version

v17.0.1

OS

mac OS BigSur (M1)

Language

Typescript

Language Version

TypeScript 4.5.2

Other information

Manually adding “./core”: “./core/index.js” to the node_modules/aws-cdk-lib/package.json solve the issue, but this is not a viable solution.

[ryparker]

In CDK v2 all @aws-cdk/core exports are now direct exports of aws-cdk-lib

The following should work: import { CfnOutput, SecretValue, Stage, Stack } from 'aws-cdk-lib';

[JoshuaToth]

@ryparker 's fix works fine

aws-cdk-lib/core -> aws-cdk-lib

Edit* adding more info

import * as cdk from 'aws-cdk-lib/core'

to

import * as cdk from 'aws-cdk-lib'