fakerer

# Fakerer
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> More Faker than Faker.
**Fakerer** is a maintained fork of [elixirs/faker](https://github.com/elixirs/faker). It is 100% API-compatible - same `Faker.*` modules, same functions, same behavior. Migrating from Faker to Fakerer is a one-line change in your `mix.exs`.
- [Fakerer](#fakerer)
  - [Why this exists](#why-this-exists)
  - [Credit](#credit)
  - [Migration from Faker](#migration-from-faker)
  - [Quickstart](#quickstart)
  - [Requirements](#requirements)
  - [Usage](#usage)
  - [Troubleshooting](#troubleshooting)
  - [Tools](#tools)
  - [Templating](#templating)
  - [Contributing](#contributing)
  - [License](#license)
## Why this exists
The upstream `faker` package shipped `0.18.0` in February 2024, then a `0.19.0-alpha.1` in February 2025 that has been sitting for over a year without graduating to a stable release. Open issues and PRs going back to 2023 are unaddressed.
Plenty of folks have asked, in issues and PRs, when a stable release might get released. The pre-release was a good sign, but it was never followed up - and after a year of waiting, I'd rather maintain a fork than keep refreshing the upstream tracker. No drama, no hard feelings - this is what open source forks are for.
## Credit
Fakerer stands entirely on the shoulders of the original library. Faker was created by [Igor Kapkov (@igas)](https://github.com/igas) and has been maintained for years by the [elixirs/faker](https://github.com/elixirs/faker) team and an enormous list of contributors. All of the locale data, all of the generators, all of the patterns - that's their work. The MIT license is preserved, and so is Igor's copyright.
If you use Fakerer, you are using Faker. Please go star [elixirs/faker](https://github.com/elixirs/faker).
## Migration from Faker
Change one line in your `mix.exs`:
```elixir
# Before
{:faker, "~> 0.18", only: :test}
# After
{:faker, "~> 1.0", hex: :fakerer, only: :test}
```
The dep atom stays `:faker` because the OTP application name is still `:faker` - only the **Hex package name** changes to `fakerer`. The `hex: :fakerer` option tells Mix to fetch it from Hex under the new package name while everything else (the app, the modules, the config) keeps the original `:faker` identity.
That's it. Every `Faker.*` call you already have keeps working - `Faker.Person.first_name/0`, `Faker.Address.city/0`, `Faker.Internet.email/0`, all of it. `Faker.start()` in your `test_helper.exs` is unchanged. Any `config :faker, locale: :de` (or similar) you have keeps working without modification.
Fakerer `1.0.0` includes everything from Faker `0.18.0` plus the changes from `0.19.0-alpha.1` - an upstream pre-release that shipped to Hex in February 2025 (requiring an exact-version pin to install) but never graduated to a stable release. That covers Elixir 1.17 & 1.18 compatibility, deprecation warning fixes, the Airports IATA nil fix, and more - see the [CHANGELOG](CHANGELOG.md).
## Quickstart
* add the dep to your `mix.exs`:
    ```elixir
    defp deps do
      [
        {:faker, "~> 1.0", hex: :fakerer, only: :test}
      ]
    end
    ```
    The dep atom is `:faker` (the OTP application name), and `hex: :fakerer` tells Mix where to find the package on Hex.
* run:
    ```
    mix deps.get
    ```
* add `Faker.start()` to `test/test_helper.exs`:
    ```elixir
    ExUnit.start()
    Faker.start()
    ```
* jump to [usage examples](#usage).
### Requirements
* OTP 26+
* Elixir 1.16+
## Usage
See [documentation](http://hexdocs.pm/fakerer/) and [usage examples](https://github.com/artkay/fakerer/blob/main/USAGE.md).
## Troubleshooting
* If you get a message like the one below when you call `Faker.Address.city/0`,
you need to add `:faker` to your application's mix file, in the `applications`
function, as above. (Yes, `:faker` - the Hex package is `:fakerer`, but the OTP
application name stays `:faker` so existing code, including `config :faker, ...`
in your application config, continues to work unchanged.)
    ```
    ** (FunctionClauseError) no function clause matching in Faker.Address.city_count/1
    lib/faker/address.ex:48: Faker.Address.city_count(nil)
    lib/faker/address.ex:41: Faker.Address.city/0
    ```
## Tools
Fakerer was designed as a lightweight library, that's why it can be easily used
with other tools.
## Templating
You can build templates for testing purposes with the
[Blacksmith](https://github.com/batate/blacksmith) project. See the Blacksmith
[readme](https://github.com/batate/blacksmith#readme) for details.
## Contributing
Contributions are welcome - see [CONTRIBUTING.md](https://github.com/artkay/fakerer/blob/main/CONTRIBUTING.md). Review cadence is roughly monthly.
## [License](https://github.com/artkay/fakerer/blob/main/LICENSE)
Released under the MIT License.
Original copyright © Igor Kapkov; fork maintenance copyright © Art Kay.