fix: fixed array with just one variable (closes #19)

Author: niftylettuce

package.json

@@ -12,9 +12,9 @@
     "babel-plugin-add-module-exports": "^1.0.2",
     "babel-preset-crocodile": "^1.0.0",
     "chai": "^4.2.0",
-    "codecov": "^3.5.0",
+    "codecov": "^3.6.5",
     "dirty-chai": "^2.0.1",
-    "dotenv": "^8.0.0",
+    "dotenv": "^8.2.0",
     "eslint-config-crocodile": "^1.0.0",
     "istanbul": "^1.1.0-alpha.1",
     "mocha": "^6.1.4"

src/index.js

@@ -63,7 +63,9 @@ function parseKey(value, key) {
   // Array
   if (value.indexOf(',') !== -1) {
     debug(`key ${key} parsed as an Array`);
-    return value.split(',').map(parseKey);
+    return value.split(',').filter(function (str) {
+      return str !== '';
+    }).map(parseKey);
   }
 
   return value;

test/fixtures/.env

@@ -1,6 +1,7 @@
 FOO=bar
 BAZ=2
 BEEP=false
+ARR=single,
 BOOP=some,thing,that,goes,wow
 # note how we use an asterisk here to turn off the parsing for this variable
 BLEEP=false*

test/fixtures/env.js

@@ -2,6 +2,7 @@ module.exports = {
   FOO: 'bar',
   BAZ: 2,
   BEEP: false,
+  ARR: [ 'single' ],
   BOOP: [ 'some', 'thing', 'that', 'goes', 'wow' ],
   BLEEP: 'false',
   PING: [ 'ping', 'true', 2, 100 ],