Load environment variables from AWS SSM for local development

aws-ssm-env.js

const { execSync, spawn } = require('child_process');

const AWS_PROFILE = process.argv[2];

const PARAMETERS_PATH = '/path/to/env/';

const { Parameters: params } = JSON.parse(
  execSync(`aws --profile ${AWS_PROFILE} ssm get-parameters-by-path --path "${PARAMETERS_PATH}" --with-decryption`)
);

console.log(`\n## Setting AWS env from profile: ${AWS_PROFILE}`);
const env = params.reduce((acc, { Name: name, Value: value }) => {
  const key = name.replace(PARAMETERS_PATH, '');
  console.log(key);
  acc[key] = value;
  return acc;
}, { PATH: process.env.PATH });
console.log('');

const [command, ...args] = process.argv.slice(3);
spawn(command, args, { stdio: 'inherit', shell: process.env.SHELL, env });

usage.sh

node aws-ssm-env.js staging yarn dev