facet-singularize 0.40.0

Fast, no-regex English singularization for the facet ecosystem
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# facet-singularize

[![Coverage Status](https://coveralls.io/repos/github/facet-rs/facet-singularize/badge.svg?branch=main)](https://coveralls.io/github/facet-rs/facet?branch=main)
[![crates.io](https://img.shields.io/crates/v/facet-singularize.svg)](https://crates.io/crates/facet-singularize)
[![documentation](https://docs.rs/facet-singularize/badge.svg)](https://docs.rs/facet-singularize)
[![MIT/Apache-2.0 licensed](https://img.shields.io/crates/l/facet-singularize.svg)](./LICENSE)
[![Discord](https://img.shields.io/discord/1379550208551026748?logo=discord&label=discord)](https://discord.gg/JhD7CwCJ8F)

# facet-singularize

Fast, no-regex English singularization for the facet ecosystem.

## Features

- **No regex** - Uses simple string operations for performance in hot paths
- **No allocations** with `is_singular_of()` - Perfect for deserialization matching
- **Handles common cases**:
  - Irregular plurals (children → child, people → person)
  - `-ies` → `-y` (dependencies → dependency)
  - `-ves` → `-f`/`-fe` (wolves → wolf, knives → knife)
  - `-es` for sibilants (boxes → box, matches → match)
  - Simple `-s` removal (items → item)
- **no_std** compatible

## Usage

```rust
use facet_singularize::{singularize, is_singular_of};

// Convert plural to singular
assert_eq!(singularize("dependencies"), "dependency");
assert_eq!(singularize("children"), "child");
assert_eq!(singularize("boxes"), "box");

// Check if a word is the singular of another (allocation-free)
assert!(is_singular_of("dependency", "dependencies"));
assert!(is_singular_of("child", "children"));
```

## Use Case

This crate is primarily used by `facet-kdl` for matching KDL node names to Rust field names:

```rust
#[derive(Facet)]
struct Config {
    #[facet(kdl::children)]
    dependencies: Vec<Dependency>,  // Matches "dependency" nodes
}
```



## Sponsors

Thanks to all individual sponsors:

<p> <a href="https://github.com/sponsors/fasterthanlime">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://github.com/facet-rs/facet/raw/main/static/sponsors-v3/github-dark.svg">
<img src="https://github.com/facet-rs/facet/raw/main/static/sponsors-v3/github-light.svg" height="40" alt="GitHub Sponsors">
</picture>
</a> <a href="https://patreon.com/fasterthanlime">
    <picture>
    <source media="(prefers-color-scheme: dark)" srcset="https://github.com/facet-rs/facet/raw/main/static/sponsors-v3/patreon-dark.svg">
    <img src="https://github.com/facet-rs/facet/raw/main/static/sponsors-v3/patreon-light.svg" height="40" alt="Patreon">
    </picture>
</a> </p>

...along with corporate sponsors:

<p> <a href="https://aws.amazon.com">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://github.com/facet-rs/facet/raw/main/static/sponsors-v3/aws-dark.svg">
<img src="https://github.com/facet-rs/facet/raw/main/static/sponsors-v3/aws-light.svg" height="40" alt="AWS">
</picture>
</a> <a href="https://zed.dev">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://github.com/facet-rs/facet/raw/main/static/sponsors-v3/zed-dark.svg">
<img src="https://github.com/facet-rs/facet/raw/main/static/sponsors-v3/zed-light.svg" height="40" alt="Zed">
</picture>
</a> <a href="https://depot.dev?utm_source=facet">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://github.com/facet-rs/facet/raw/main/static/sponsors-v3/depot-dark.svg">
<img src="https://github.com/facet-rs/facet/raw/main/static/sponsors-v3/depot-light.svg" height="40" alt="Depot">
</picture>
</a> </p>

...without whom this work could not exist.

## Special thanks

The facet logo was drawn by [Misiasart](https://misiasart.com/).

## License

Licensed under either of:

- Apache License, Version 2.0 ([LICENSE-APACHE](https://github.com/facet-rs/facet/blob/main/LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
- MIT license ([LICENSE-MIT](https://github.com/facet-rs/facet/blob/main/LICENSE-MIT) or <http://opensource.org/licenses/MIT>)

at your option.