Conditionally exclude installing node dependency from package.json-CodePudding

I have an ExpressJS application. I want to execute it on Lambda functions and EC2.

In order to execute it on Lambda functions, I use the @vendia/serverless-express package.

In order to execute it on EC2, I want to exclude the installation of @vendia/serverless-express.

The env variable TYPE makes it possible to distinguish between the two deployments.

Since, @vendia/serverless-express is part of my dependencies in package.json it gets installed on EC2 as well. Is there a way to exclude it using the TYPE environment variable for EC2 deployment?

CodePudding user response：

You can define a block in your package.json such as:

{
    ...
    "serverlessDependencies":
    {
        "@vendia/serverless-express": "*"
    },
    ...
}

And then, use a library called handpick to select when to install them.

Then write a bash script that will evaluate NODE_ENV and decide what to do:

pseudo code:

npm install
if(NODE_ENV == 'serverless')
   npx handpick --target=serverlessDependencies