.env.local.production is a technically valid filename, it is unconventional
env-loader.js)const dotenv = require('dotenv');
const path = require('path');
Local Production Overrides
The file .env.local.production is used exclusively for local debugging of production builds. It is ignored by Git. Do not use this file in CI/CD pipelines. .env.local.production
.env.local.production file is a specialized environment variable file used primarily in modern web frameworks like production-specific secrets on a local machine. .env.local.production Format : Follow the KEY=VALUE pattern without spaces
.local: Indicates that this file is local to your machine or the specific server instance. Crucially, local files should almost never be committed to Git. .env.local.production is a technically valid filename
Format: Follow the KEY=VALUE pattern without spaces around the = sign.
Purpose
The .env.local.production file serves a similar purpose as .env files in general: to store environment-specific variables. However, the addition of .local and .production suggests a more specific use case:
# .env.production
NEXT_PUBLIC_CDN_URL=https://d123.cloudfront.net
In professional development workflows, environment variables are managed through several .env files to separate configuration from code. The .env.local.production file is used to override default production values for a single local machine or a specific server.