old_contents: 'use strict';
  
  require('dotenv').config();
  
  const PRODUCTION = process.env.NODE_ENV === 'production';
  
  const FASTLY_API_KEY = process.env.FASTLY_API_KEY;
  const SURROGATE_KEY = process.env.SURROGATE_KEY;
  
  if (!SURROGATE_KEY) {
  	console.error('In order to purge assets from Fastly, you need to have set the environment variable "SURROGATE_KEY". This can be done by creating a file named ".env" in the root of this repository with the contents "SURROGATE_KEY=XXXXXX", where XXXXXX is the surrogate-key used in your polyfill-service application.');
  	process.exit(1);
  }
  
  let FASTLY_SERVICE_ID;
  
  if (!FASTLY_API_KEY) {
  	console.error('In order to purge assets from Fastly, you need to have set the environment variable "FASTLY_API_KEY". This can be done by creating a file named ".env" in the root of this repository with the contents "FASTLY_API_KEY=XXXXXX", where XXXXXX is your Fastly API key.');
  	process.exit(1);
  }
  
  if (PRODUCTION && !process.env.FASTLY_SERVICE_ID) {
  	console.error('In order to purge assets from the production Fastly service, you need to have set the environment variable "FASTLY_SERVICE_ID". This can be done by creating a file named ".env" in the root of this repository with the contents "FASTLY_SERVICE_ID=XXXXXX", where XXXXXX is your Fastly service ID.');
  	process.exit(1);
  } else {
  	FASTLY_SERVICE_ID = process.env.FASTLY_SERVICE_ID;
  }
  
  if (!PRODUCTION && !process.env.FASTLY_SERVICE_ID_QA) {
  	console.error('In order to purge assets from the QA Fastly service, you need to have set the environment variable "FASTLY_SERVICE_ID_QA". This can be done by creating a file named ".env" in the root of this repository with the contents "FASTLY_SERVICE_ID_QA=XXXXXX", where XXXXXX is your Fastly service ID.');
  	process.exit(1);
  } else {
  	FASTLY_SERVICE_ID = process.env.FASTLY_SERVICE_ID_QA;
  }
  
  const FastlyPurge = require('fastly-purge');
  
  const fastly = new FastlyPurge(FASTLY_API_KEY, {
  	softPurge: true
  });
  
  
  fastly.key(FASTLY_SERVICE_ID, SURROGATE_KEY, {
  	apiKey: FASTLY_API_KEY
  }, error => {
  	if (error) {
  		console.error(`Failed to purge endpoints. ${error}`);
  		process.exit(1);
  	} else {
  		console.log(`Purged key: ${SURROGATE_KEY} from ${PRODUCTION ? 'production' : 'qa'} service - https://manage.fastly.com/dashboard/services/${FASTLY_SERVICE_ID}/datacenters/all`);
  	}
  });
  
new_contents: 'use strict';
  
  require('dotenv').config();
  
  const PRODUCTION = process.env.NODE_ENV === 'production';
  
  const FASTLY_API_KEY = process.env.FASTLY_API_KEY;
  const SURROGATE_KEY = process.env.SURROGATE_KEY;
  
  if (!SURROGATE_KEY) {
  	console.error('In order to purge assets from Fastly, you need to have set the environment variable "SURROGATE_KEY". This can be done by creating a file named ".env" in the root of this repository with the contents "SURROGATE_KEY=XXXXXX", where XXXXXX is the surrogate-key used in your polyfill-service application.');
  	process.exit(1);
  }
  
  let FASTLY_SERVICE_ID;
  
  if (!FASTLY_API_KEY) {
  	console.error('In order to purge assets from Fastly, you need to have set the environment variable "FASTLY_API_KEY". This can be done by creating a file named ".env" in the root of this repository with the contents "FASTLY_API_KEY=XXXXXX", where XXXXXX is your Fastly API key.');
  	process.exit(1);
  }
  
  if (PRODUCTION) {
  	if (process.env.FASTLY_SERVICE_ID) {
  		FASTLY_SERVICE_ID = process.env.FASTLY_SERVICE_ID;
  	} else {
  		console.error('In order to purge assets from the production Fastly service, you need to have set the environment variable "FASTLY_SERVICE_ID". This can be done by creating a file named ".env" in the root of this repository with the contents "FASTLY_SERVICE_ID=XXXXXX", where XXXXXX is your Fastly service ID.');
  		process.exit(1);
  	}
  } else {
  	if (process.env.FASTLY_SERVICE_ID_QA) {
  		FASTLY_SERVICE_ID = process.env.FASTLY_SERVICE_ID_QA;
  	} else {
  		console.error('In order to purge assets from the QA Fastly service, you need to have set the environment variable "FASTLY_SERVICE_ID_QA". This can be done by creating a file named ".env" in the root of this repository with the contents "FASTLY_SERVICE_ID_QA=XXXXXX", where XXXXXX is your Fastly service ID.');
  		process.exit(1);
  	}
  }
  
  const FastlyPurge = require('fastly-purge');
  
  const fastly = new FastlyPurge(FASTLY_API_KEY, {
  	softPurge: true
  });
  
  
  fastly.key(FASTLY_SERVICE_ID, SURROGATE_KEY, {
  	apiKey: FASTLY_API_KEY
  }, error => {
  	if (error) {
  		console.error(`Failed to purge endpoints. ${error}`);
  		process.exit(1);
  	} else {
  		console.log(`Purged key: ${SURROGATE_KEY} from ${PRODUCTION ? 'production' : 'qa'} service - https://manage.fastly.com/dashboard/services/${FASTLY_SERVICE_ID}/datacenters/all`);
  	}
  });
  
subject: Fix logic around purging assets