demonstrate reverse expansion for now

Author: motdotla

CHANGELOG.md

@@ -20,10 +20,6 @@ All notable changes to this project will be documented in this file. See [standa
 
 > This has always been dangerous (unexpected side effects) and is now removed. `process.env` should not hold values you want to expand. If for some reason you need equivalent abilities, use [dotenvx](https://github.com/dotenvx/dotenvx). You can ship an encrypted .env file with your code - allowing safe expansion at runtime - rather than relying on trying to expand pre-existing `process.env` values that could for good reason have a dollar sign in them (example a password). 
 
-* ⚠️ BREAKING: do NOT expand in reverse order ([#131](https://github.com/motdotla/dotenv-expand/pull/131))
-
-> Instead, order your KEYS from first to last as they depend on each other for expansion - principle of least surprise. 
-
 ## [11.0.7](https://github.com/motdotla/dotenv-expand/compare/v11.0.6...v11.0.7) (2024-11-13)
 
 ### Changed

tests/.env.test

@@ -82,3 +82,9 @@ PASSWORD_EXPAND_NESTED_NESTED=${PASSWORD_EXPAND_NESTED}
 
 USE_IF_SET=true
 ALTERNATE=${USE_IF_SET:+alternate}
+
+# https://github.com/motdotla/dotenv-expand/issues/123
+FIRST_PAGE_URL=${PROJECT_PUBLIC_HOST}/first-page
+MOCK_SERVER_HOST=http://localhost:${MOCK_SERVER_PORT}
+MOCK_SERVER_PORT=8090
+PROJECT_PUBLIC_HOST=${MOCK_SERVER_HOST}

tests/main.js

@@ -598,3 +598,17 @@ t.test('expands alternate logic when not set', ct => {
 
   ct.end()
 })
+
+// WARNING: this is a side effect of dotenv.config prior loading to process.env. THIS IS NOT ACCURATE behavior and is removed in [dotenvx](https://github.com/dotenvx/dotenvx) to match bash expectations.
+// DO NOT RELY ON this, instead order your KEYS appropriately
+t.test('expansion for https://github.com/motdotla/dotenv-expand/issues/123', ct => {
+  const dotenv = require('dotenv').config({ path: 'tests/.env.test' })
+  dotenvExpand.expand(dotenv)
+
+  ct.equal(process.env.FIRST_PAGE_URL, 'http://localhost:8090/first-page')
+  ct.equal(process.env.MOCK_SERVER_HOST, 'http://localhost:8090')
+  ct.equal(process.env.MOCK_SERVER_PORT, '8090')
+  ct.equal(process.env.PROJECT_PUBLIC_HOST, 'http://localhost:8090')
+
+  ct.end()
+})