load-secrets.js

const { writeFileSync } = require('fs');
const requiredSecrets = require('./src/required-secrets');
const optionalSecrets = require('./src/optional-secrets');

// load variables from .env file
require('dotenv').config();

const outputFile = './src/secrets.ts';

const missingSecrets = [];

for (const secret of requiredSecrets) {
  if (process.env[secret] === undefined) {
    missingSecrets.push(secret);
  }
}
for (const secret of optionalSecrets) {
  if (process.env[secret.name] === undefined) {
    process.env[secret.name] = secret.default;
  }
  requiredSecrets.push(secret.name);
}

// if missing, terminate script to prevent build or serve from running
if (missingSecrets.length) {
  console.error(
    `ERROR: Missing the following environment variables: ${missingSecrets.join(
      ','
    )}`
  );
  process.exit(1);
}

// write to secrets.ts file
const secretsFileContent = `export const SECRETS = { ${requiredSecrets
  .map((name) => `${name}: '${process.env[name]}'`)
  .join(', ')} }`;
try {
  writeFileSync(outputFile, secretsFileContent);
} catch (err) {
  console.error(`Error writing to file: ${JSON.stringify(err)}`);
}