In order to fix the Argument of type is Not Assignable to type Construct Error in CDK, we have to fix any CDK package version mismatches in our project.

Fix CDK - Argument of type Not Assignable to type Construct


## Solving Argument of type is not Assignable to Construct in CDK

**The reason we get the "Argument of type is not assignable to paramter of type
Construct" error in CDK is because we have different versions of CDK packages in
the same CDK project.**

Different versions of CDK packages are often incompatible with each other, for
example:

```json:package.json
{
  "dependencies": {
    "@aws-cdk/aws-dynamodb": "^1.100.0",
    "@aws-cdk/aws-iam": "^1.101.0",
  }
}
```

In the code snippet, the versions of the packages differ and this causes the
error.

**In order to solve the "Argument of type is not assignable to parameter of type
Construct" error in CDK, we have to:**

1. update our CDK packages in the `dependencies` section in `package.json` to
   the same version.

   <Alert>
     Remove the <code>^</code> (caret) symbol prefix from the versions.
   </Alert>

   Npm adds the `^` symbol by default. The `^` symbol tells npm to install the
   version we have specified **or install the latest minor or patch version**.

   When using CDK packages, we want to lock the version down, therefore we
   remove the `^` prefix.

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2. delete the `node_modules` folder and the `package-lock.json` file:

```bash:shell
rm -rf node_modules

rm package-lock.json
```

3. install the dependencies

```bash:shell
npm install
```

**The next time you install a CDK package, use the `--save-exact` flag, so that
you lock down the version of the package and tell `npm` to omit the `^` symbol
prefix.**

To install a specific version of a CDK package and lock it:

```bash:shell
npm install --save-exact @aws-cdk/aws-s3@1.101.0
```

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To install the latest version of a CDK package and lock it:

```bash:shell
npm install --save-exact @aws-cdk/aws-s3@latest
```

If you look at the `dependencies` section in your `package.json` file, after
installing a module with the `--save-exact` flag, you will see that the `^`
(caret) symbol is not included and the version is locked down.

```json:package.json
{
  "dependencies": {
    "@aws-cdk/aws-s3": "1.101.0"
  }
}
```

<Alert>
  Make sure to check your CDK package versions in the <code>package.json</code>{' '}
  file, before installing new CDK packages. The CDK library gets updated almost
  daily, so unfortunately it's not as simple as installing the latest version,
  when adding new dependencies.
</Alert>

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## Further Reading

- [AWS CDK Tutorial for Beginners - Step-by-Step Guide](/blog/aws-cdk-tutorial-typescript)
- [How does AWS CDK work](/blog/how-does-aws-cdk-work)
- [What is a Token in AWS CDK](/blog/what-is-aws-cdk-token)
- [CDK Constructs - Complete Guide](/blog/cdk-constructs-tutorial)
- [What is an identifier (id) in AWS CDK](/blog/aws-cdk-identifiers)
- [How to use Context in AWS CDK](/blog/how-to-use-context-aws-cdk)
- [How to use Parameters in AWS CDK](/blog/aws-cdk-parameters-example)

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Fix CDK - Argument of type Not Assignable to type Construct

In order to fix the Argument of type is Not Assignable to type Construct Error in CDK, we have to fix any CDK package version mismatches in our project.

Solving Argument of type is not Assignable to Construct in CDK #

Further Reading #

Borislav Hadzhiev

For morearticles, navigate to myHome Page

For questions and suggestions visit my Contacts Page

Fix CDK - Argument of type Not Assignable to type Construct

In order to fix the Argument of type is Not Assignable to type Construct Error in CDK, we have to fix any CDK package version mismatches in our project.

Solving Argument of type is not Assignable to Construct in CDK #

Further Reading #

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Borislav Hadzhiev

For morearticles, navigate to myHome Page

For questions and suggestions visit my Contacts Page