# Changelog

## 3.1.0 - 2026-02-13

- Add layered env file support for `path` and `defaults`:
    - Accept `string | string[]` in code
    - Accept comma-separated values via `DOTENV_CONFIG_PATH` and `DOTENV_CONFIG_DEFAULTS`
    - Deterministic merge order with last layer wins
- Add layered schema support with `schemaExtends` (`string | string[]` or comma-separated env var)
- Add `returnSchemaOnly` option to return only schema-defined keys
- Add `errorOnMissingFiles` option for strict missing-file errors
- Add CLI print mode:
    - `--print` for JSON output
    - `--print=dotenv` for `KEY=value` output
- Add `dee` CLI alias while preserving `dotenv-extended` command compatibility
- Expand tests for new config/CLI behavior and maintain full coverage
- Update README documentation for new options and layered-file usage

## 3.0.1 - 2026-02-13

- Configure GitHub Actions permissions/workflow settings update

## 3.0.0 - 2026-02-13

- Modernize build/test/lint tooling:
    - Replace `gulp` + Babel + `esm` with `tsup`, `vitest`, modern ESLint, and Prettier
- Increase supported Node baseline to `>=20`
- Add `exports` and explicit publish `files` map
- Remove unnecessary runtime dependencies:
    - `auto-parse`
    - `camelcase`
    - `cross-spawn`
- Keep public API compatibility for `load`, `config`, `parse`, preload config entry, and CLI usage
- Expand and modernize test coverage, including CLI execution behavior

## 2.9.0 - 2020.09.30

- Missing values in schema now default to empty strings for `errorOnRegex` (thanks @FokkeZB)
- Minor modernization and refactoring of unit tests

## 2.8.0 - 2020.03.25

- Update dependencies while retaining compatibility with Node 6
- Add ability to configure through environment variables (thanks @Levino)
- Remove `@types/dotenv` as a dependency
- Add Node 12 to travis-ci tests
- General code cleanup/modernizing

## 2.7.1 - 2019.12.30

- Update README to include `import` syntax

## 2.7.0 - 2019.12.13

- fix: check for extra keys needs to be specific to schema

## 2.5.0 - 2019.10.27

- Update dependencies and remove useless dependencies (thanks @webdevium)
- Modernize and streamline build process

## 2.4.0 - 2019.03.01

- Add ability to put regexs in the `.env.schema` file to validate and limit the values that can be added to the `.evn` and `.env.defaults` files (thanks @epiphone)

## 2.3.0 - 2018.09.13

- Add error checking flag to include process.env when it checks for required variables (thanks @Vija02)

## 2.2.0 - 2018.08.07

- Remove support for end-of-life versions of node (4, 5, 7, 9)
- Require node >=6.0.0
- Update package dependencies

## 2.1.0 - 2018.08.07

- Expose entire process.env to command called with CLI

## 2.0.2 - 2018.04.16

- Fix markdown header (thanks @vvo)
- Update package dependencies (thanks @gregswindle)
- Add node versions 8 and 9 to travis versions to test

## 2.0.1 - 2017.05.30

- Add TypeScript definitions (thanks @toverux)

## 2.0.0 - 2017.04.26

- Add binary for injecting .env variables into non-node scripts

## 1.0.4 - 2016.10.23

- Replace `winston` library with generic `console` (Thanks @bostrom)

## 1.0.3 - 2016.08.06

- Fix comma-space typo in thrown error (Thanks @niftylettuce)

## 1.0.2 - 2016.08.04

- Add `default` export to simplify ES6 imports

## 1.0.1 - 2016.05.10

- Add ability to load .env files from command line
- Update dependencies

## 1.0.0 - 2016.02.15

- Correct documentation error
- Update dependencies

## 0.1.1 - 2016.02.10

- Remove errant ide files from package
- Add prepublish npm script

## 0.1.0 - 2016.02.09

- Initial release