feat: normalise app info environment string

The FT may use multiple values across different platforms to indicate
the environment that an app is running in. For example, AWS resources
may be assigned an environment variable named ENVIRONMENT with the
value "p" which is short for "production".

Author: i-like-robots

packages/app-info/lib/index.js

@@ -79,18 +79,44 @@ exports.commitHash =
 	process.env.GIT_COMMIT ||
 	null;
 
+/**
+ * Normalize environment tag
+ * @param {string} tag
+ *     The environment tag to normalize.
+ * @returns {string}
+ *     Returns the normalized environment tag
+ */
+function normalizeEnvironmentTag(tag) {
+	const tagLower = tag.toLowerCase();
+
+	if (['d', 'dev', 'development'].includes(tagLower)) {
+		return 'development';
+	}
+
+	if (['t', 'test'].includes(tagLower)) {
+		return 'test';
+	}
+
+	if (['p', 'prod', 'production'].includes(tagLower)) {
+		return 'production';
+	}
+
+	return tag;
+}
+
 /**
  * The application deployment environment.
  *
  * @readonly
  * @type {string}
  */
-exports.environment =
+exports.environment = normalizeEnvironmentTag(
 	process.env.DEPLOYMENT_ENVIRONMENT ||
 	process.env.RELEASE_ENV ||
 	process.env.ENVIRONMENT ||
 	process.env.NODE_ENV ||
-	'development';
+	'development'
+);
 
 /**
  * The region the application is running in.