Nomus is a naming-style toolkit for Node.js and NestJS. It detects the current style of a string and converts it to formats like UPPERCCASE, lowercase, PascalCase, camelCase, snake_case, SCREAMING_SNAKE_CASE, kebab-case, UPPER-KEBAB-CASE, Title Case and Train-Case.

🚀 Features

✔ Convert from any format to:

• UPPERCCASE
• lowercase
• PascalCase
• camelCase
• snake_case
• SCREAMING_SNAKE_CASE
• kebab-case
• UPPER-KEBAB-CASE
• Title Case
• Train-Case

✔ Automatically detects:

• UPPERCCASE
• lowercase
• PascalCase
• camelCase
• snake_case
• SCREAMING_SNAKE_CASE
• kebab-case
• UPPER-KEBAB-CASE
• Title Case
• Train-Case
• and mixed cases

✔ Pure TypeScript API for Node.js and TypeScript projects
✔ Optional NestJS integration exposed as nomus/nest
✔ ESM, CommonJS, and declaration files ready for npm publishing
✔ Detects common naming conventions and mixed input
✔ No runtime dependencies for the core package

📥 Installation

npm install nomus

For NestJS integration:

npm install nomus @nestjs/common reflect-metadata

Nomus is compatible with NestJS 10 projects that already use [email protected], and also with [email protected]. The nomus/nest entrypoint is also published in a way that works with classic TypeScript moduleResolution: node.

✨ Node.js Usage

import { Naming, detectNamingStyle, toSnakeCase } from "nomus";

detectNamingStyle("votesUsers");
// "camelCase"

toSnakeCase("UserVotesDetails");
// "user_votes_details"

Naming.toTrainCase("helloWorldTest");
// "Hello-World-Test"

✨ NestJS Usage

import { Module } from "@nestjs/common";
import { NomusModule } from "nomus/nest";

@Module({
  imports: [NomusModule]
})
export class AppModule {}

import { Injectable } from "@nestjs/common";
import { NomusService } from "nomus/nest";

@Injectable()
export class SlugService {
  constructor(private readonly nomus: NomusService) {}

  formatLabel(value: string) {
    return this.nomus.toKebabCase(value);
  }
}

🧩 Available Methods

🔤 Naming.*

Static equivalents for all methods

Naming.detectNamingStyle("UserVotesDetails");    // PascalCase
Naming.toTrainCase("userVotesDetails");          // "User-Votes-Details"

🔍 detectNamingStyle(input)

Automatically detects the naming convention of the text.

Possible results:

• 'UPPERCASE'
• 'lowercase'
• 'PascalCase'
• 'camelCase'
• 'snake_case'
• 'SCREAMING_SNAKE_CASE'
• 'kebab-case'
• 'UPPER-KEBAB-CASE'
• 'Title Case'
• 'Train-Case'
• 'Unknown / Mixed'

Examples:

Naming.detectNamingStyle("UserVotesDetails");    // PascalCase
detectNamingStyle("userVotesDetails");           // camelCase
Naming.detectNamingStyle("user_votes_details");  // snake_case
detectNamingStyle("user-votes-details");         // kebab-case
Naming.detectNamingStyle("votes UsersDetails");  // Unknown / Mixed

🔠 toUpperCase(input)

Converts from any format to UPPERCASE.

🔡 toLowerCase(input)

Converts from any format to lowercase.

🧱 toPascalCase(input)

Converts from any format to PascalCase.

🐪 toCamelCase(input)

Converts from any format to camelCase.

🐍 toSnakeCase(input)

Converts from any format to snake_case.

🐍🔠 toScreamingSnakeCase(input)

Converts from any format to SCREAMING_SNAKE_CASE.

🔗 toKebabCase(input)

Converts from any format to kebab-case.

🔗🔠 toUpperKebabCase(input)

Converts from any format to UPPER-KEBAB-CASE.

🔤 toTitleCase(input)

Converts from any format to Title Case.

🚂 toTrainCase(input)

Converts from any format to Title Case.

🧪 Additional Examples

Naming.toPascalCase("hello-world");       // HelloWorld
toCamelCase("HELLO_WORLD");               // helloWorld
Naming.toSnakeCase("HelloWorld");         // hello_world
toKebabCase("helloWorldTest");            // hello-world-test
Naming.ToTrainCase("helloWorldTest");     // Hello-World-Test

detectNamingStyle("MyVariable");          // PascalCase
Naming.detectNamingStyle("myVariable");   // camelCase
detectNamingStyle("my_variable");         // snake_case
Naming.detectNamingStyle("my-variable");  // kebab-case
detectNamingStyle("My Variable");         // Title Case

📄 License

This project is licensed under the MIT License, which means you can freely use it in commercial and personal projects.

🤝 Contributing

Contributions are welcome! You can:

• Report issues
• Propose improvements
• Submit PRs

⭐ Support the Project

If this package was useful to you, consider leaving a ⭐ on GitHub or sharing it with other developers.