feat: added support for variables in variables

index.js

@@ -25,6 +25,15 @@ const setupEnv = (config = {}) => {
       env[element] = Mustache.render(env[element], env);
   }
 
+  //
+  // add support for variables defined in other variables
+  // (basically double looping will do the trick)
+  //
+  for (const element of keys) {
+    if (env[element].includes('{{'))
+      env[element] = Mustache.render(env[element], env);
+  }
+
   env = dotenvParseVariables(env);
   Object.assign(process.env, env);
   return env;

package.json

@@ -11,23 +11,23 @@
     "Nick Baugh <niftylettuce@gmail.com> (http://niftylettuce.com/)"
   ],
   "dependencies": {
-    "dotenv-extended": "^2.7.1",
-    "dotenv-parse-variables": "^0.2.3",
-    "mustache": "^4.0.0"
+    "dotenv-extended": "^2.8.0",
+    "dotenv-parse-variables": "^0.3.0",
+    "mustache": "^4.0.1"
   },
   "devDependencies": {
     "ava": "2.x",
-    "codecov": "^3.6.5",
+    "codecov": "^3.7.0",
     "cross-env": "6.x",
     "eslint": "^6.8.0",
-    "eslint-config-prettier": "^6.10.0",
-    "eslint-plugin-prettier": "^3.1.2",
+    "eslint-config-prettier": "^6.11.0",
+    "eslint-plugin-prettier": "^3.1.4",
     "husky": "3.x",
-    "lint-staged": "^10.0.7",
-    "nyc": "^15.0.0",
-    "prettier": "^1.19.1",
-    "remark-cli": "^7.0.1",
-    "remark-preset-github": "^0.0.16",
+    "lint-staged": "^10.2.11",
+    "nyc": "^15.1.0",
+    "prettier": "^2.0.5",
+    "remark-cli": "^8.0.0",
+    "remark-preset-github": "^2.0.0",
     "xo": "0.24"
   },
   "engines": {

test/test.js

@@ -2,15 +2,15 @@ const test = require('ava');
 
 const env = require('..');
 
-test('NODE_ENV is test', t => {
+test('NODE_ENV is test', (t) => {
   t.is(process.env.NODE_ENV, 'test');
   t.is(env().NODE_ENV, 'test');
 });
 
-test('is function', t => {
+test('is function', (t) => {
   t.true(typeof env === 'function');
 });
 
-test('returns object', t => {
+test('returns object', (t) => {
   t.true(typeof env() === 'object');
 });