From c540a1a002e4d317bd7562aeeb510708e5685d7f Mon Sep 17 00:00:00 2001
From: orthagonal <orthagonal1@gmail.com>
Date: Thu, 11 Oct 2018 18:41:54 +0000
Subject: [PATCH] truthyEnv

---
 lib/confi.js         |  2 ++
 lib/truthyEnv.js     |  7 +++++++
 test/test-helpers.js | 23 ++++++++++++++++++++++-
 3 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 lib/truthyEnv.js

diff --git a/lib/confi.js b/lib/confi.js
index 2d05aac..698aef8 100644
--- a/lib/confi.js
+++ b/lib/confi.js
@@ -11,6 +11,7 @@ const parseDir = require('parse-dir');
 const ms = require('ms');
 const envExists = require('./exists');
 const truthy = require('./truthy.js');
+const truthyEnv = require('./truthyEnv.js');
 const readFile = require('./readFile');
 const getEnvOrFile = require('./getEnvOrFile');
 const getEnv = require('./getEnv');
@@ -82,6 +83,7 @@ const load = async(options) => {
     envExists,
     ms,
     truthy,
+    truthyEnv,
     readFile,
     getEnvOrFile,
     getEnv,
diff --git a/lib/truthyEnv.js b/lib/truthyEnv.js
new file mode 100644
index 0000000..dc385eb
--- /dev/null
+++ b/lib/truthyEnv.js
@@ -0,0 +1,7 @@
+module.exports = function(val, defaultVal = false) {
+  const result = process.env[val];
+  if (result === undefined || result === null) {
+    return defaultVal;
+  }
+  return (result === '1' || result === true || result === 'true');
+};
diff --git a/test/test-helpers.js b/test/test-helpers.js
index 07dae23..c5407c7 100644
--- a/test/test-helpers.js
+++ b/test/test-helpers.js
@@ -4,7 +4,6 @@ const confi = require('../');
 const path = require('path');
 
 //t.runOnly = true;
-
 t.test('envExists helper', async (assert) => {
   process.env.TEST_VARIABLE = 'a test variable';
   process.env.TEST_VARIABLE2 = 1;
@@ -224,3 +223,25 @@ t.test('hasValue helper', async (assert) => {
   });
   assert.end();
 });
+
+t.test('includes truthyEnv helper', async (assert) => {
+  process.env.VAR1 = '1';
+  process.env.VAR2 = 'true';
+  process.env.VAR3 = true;
+  process.env.VAR4 = 'false';
+  const config = await confi({
+    config: {
+      var1: '{{truthyEnv("VAR1", false)}}',
+      var2: '{{truthyEnv("VAR2", false)}}',
+      var3: '{{truthyEnv("VAR3", false)}}',
+      var4: '{{truthyEnv("VAR4", false)}}',
+      undef: '{{truthyEnv("UNDEF", "not defined")}}',
+    }
+  });
+  assert.equal(config.var1, true);
+  assert.equal(config.var2, true);
+  assert.equal(config.var3, true);
+  assert.equal(config.var4, false);
+  assert.equal(config.undef, 'not defined');
+  assert.end();
+});