From a8b97200b66483c53adf1a96f641cadceb79983d Mon Sep 17 00:00:00 2001
From: kevin9327 <5299031+kevin9327@users.noreply.github.com>
Date: Mon, 5 Oct 2026 12:36:04 +0900
Subject: [PATCH] fix: parse debug and override in populate like config does

---
 lib/main.js            |  4 ++--
 tests/test-populate.js | 26 ++++++++++++++++++++++++++
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/lib/main.js b/lib/main.js
index 68d57475..ba87000c 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -351,8 +351,8 @@ function config (options) {
 
 // Populate process.env with parsed values
 function populate (processEnv, parsed, options = {}) {
-  const debug = Boolean(options && options.debug)
-  const override = Boolean(options && options.override)
+  const debug = parseBoolean(options && options.debug)
+  const override = parseBoolean(options && options.override)
   const populated = {}
 
   if (processEnv === null || typeof processEnv !== 'object' || parsed === null || typeof parsed !== 'object') {
diff --git a/tests/test-populate.js b/tests/test-populate.js
index 157f0af4..c72edc19 100644
--- a/tests/test-populate.js
+++ b/tests/test-populate.js
@@ -56,6 +56,32 @@ t.test('does write over keys already in processEnv if override turned on', ct =>
   ct.equal(process.env.test, parsed.test)
 })
 
+t.test('does not write over keys already in processEnv if override is the string false', ct => {
+  ct.plan(1)
+
+  const processEnv = { test: 'bar' }
+  const parsed = { test: 'test' }
+
+  dotenv.populate(processEnv, parsed, { override: 'false' })
+
+  ct.equal(processEnv.test, 'bar')
+})
+
+t.test('does not log when debug is the string false', ct => {
+  ct.plan(1)
+
+  const logStub = sinon.stub(console, 'log')
+
+  const processEnv = { test: 'bar' }
+  const parsed = { test: 'test' }
+
+  dotenv.populate(processEnv, parsed, { debug: 'false' })
+
+  ct.notOk(logStub.called)
+
+  logStub.restore()
+})
+
 t.test('logs any errors populating when in debug mode but override turned off', ct => {
   ct.plan(2)