Passing Variables to a script in pipelines

Question

I have set up some repository variables which I can call in my bitbucket-pipelines.yml file using $API_KEY

But What I cannot figure out is how to pass those variables into one of the scripts I have running in the step my yml looks something like this

clone:
depth: full

options:
max-time: 20

pipelines:
branches:
    develop:
      - step:
name: Create config and deploy
image: node:10.15.3
script:
            - npm install
            - npm test
            - bin/generate-config.js
variables:
API_KEY: $DEV_API_KEY
            - bin/deploy.sh

in github i know you can have env: and put variables in there but I'm not sure how to achieve this with bb pipelines.

And within my .js file I'm not sure how I can then call these passed variables

rohans_hanwc9 · Accepted Answer

i fixed this just doing the following

pipelines:
branches:
    develop:
      - step:
name: Create config and deploy
image: node:10.15.3
script:
            - npm install
            - npm test
            - bin/generate-config.js $DEV_API_KEY
            - bin/deploy.sh

Then within my .js file just using

const apiKey = process.argv[2];