Dot Case
Transform text into dot.case format where words are lowercase and separated by dots.
๐ Features
- Lightweight - Only ~450B minified + gzipped
- Type-safe - Full TypeScript support with comprehensive type definitions
- Zero dependencies - No external dependencies
- Tree-shakeable - ES modules support
- Universal - Works in browsers, Node.js, and serverless environments
- Well-tested - Comprehensive test suite with edge cases
- Customizable - Flexible options for advanced use cases
๐ฆ Installation
# npm
npm install text-dot-case
# yarn
yarn add text-dot-case
# pnpm
pnpm add text-dot-case
# bun
bun add text-dot-case
๐ฏ Quick Start
import { dotCase } from "text-dot-case";
console.log(dotCase("hello world")); // "hello.world"
console.log(dotCase("userProfileData")); // "user.profile.data"
console.log(dotCase("backgroundColor")); // "background.color"
๐ Usage
ES Modules (Recommended)
import { dotCase } from "text-dot-case";
console.log(dotCase("Hello World")); // "hello.world"
CommonJS
const { dotCase } = require("text-dot-case");
console.log(dotCase("Hello World")); // "hello.world"
TypeScript
import { dotCase, Options } from "text-dot-case";
const result: string = dotCase("Hello World");
console.log(result); // "hello.world"
๐ Transformation Examples
Basic Transformations
import { dotCase } from "text-dot-case";
// From different cases
dotCase("Hello World"); // "hello.world"
dotCase("helloWorld"); // "hello.world"
dotCase("HelloWorld"); // "hello.world"
dotCase("hello_world"); // "hello.world"
dotCase("hello-world"); // "hello.world"
dotCase("HELLO_WORLD"); // "hello.world"
dotCase("CONSTANT_CASE"); // "constant.case"
// Complex examples
dotCase("XMLParser"); // "xml.parser"
dotCase("iPhone6Plus"); // "i.phone6.plus"
dotCase("HTML5Canvas"); // "html5.canvas"
dotCase("getUserID"); // "get.user.id"
Advanced Options
import { dotCase } from "text-dot-case";
// Custom word splitting
dotCase("XMLHttpRequest", {
splitRegexp: /([a-z])([A-Z])/g,
}); // "xml.http.request"
// Custom character stripping
dotCase("hello@world.com", {
stripRegexp: /[@]/g,
}); // "hello.world.com"
// Custom transformation function
dotCase("API-v2-endpoint", {
transform: (word, index) => {
if (word === "API") return "api";
if (word === "v2") return "v2";
return word.toLowerCase();
},
}); // "api.v2.endpoint"
๐ Real-World Examples
Object Property Names
import { dotCase } from "text-dot-case";
// API response normalization
const apiResponse = {
"First Name": "John",
Last_Name: "Doe",
emailAddress: "john@example.com",
phoneNumber: "+1234567890",
};
const normalized = Object.keys(apiResponse).reduce((acc, key) => {
acc[dotCase(key)] = apiResponse[key];
return acc;
}, {});
console.log(normalized);
// {
// "first.name": "John",
// "last.name": "Doe",
// "email.address": "john@example.com",
// "phone.number": "+1234567890"
// }
Configuration Keys
import { dotCase } from "text-dot-case";
// Environment variables to config
dotCase("DATABASE_HOST"); // "database.host"
dotCase("apiSecretKey"); // "api.secret.key"
dotCase("maxRetryAttempts"); // "max.retry.attempts"
dotCase("REDIS_CONNECTION"); // "redis.connection"
dotCase("jwtTokenExpiry"); // "jwt.token.expiry"
File and Module Names
import { dotCase } from "text-dot-case";
// Component naming
dotCase("UserProfile"); // "user.profile"
dotCase("ShoppingCart"); // "shopping.cart"
dotCase("PaymentGateway"); // "payment.gateway"
dotCase("AuthMiddleware"); // "auth.middleware"
dotCase("EmailValidator"); // "email.validator"
Method and Function Names
import { dotCase } from "text-dot-case";
// Class methods to dot notation
dotCase("getUserById"); // "get.user.by.id"
dotCase("calculateTotalPrice"); // "calculate.total.price"
dotCase("validateEmailAddress"); // "validate.email.address"
dotCase("processPaymentData"); // "process.payment.data"
dotCase("generateAccessToken"); // "generate.access.token"
Database and Schema Mapping
import { dotCase } from "text-dot-case";
// Transform form data for nested objects
function normalizeFormData(formData) {
const normalized = {};
for (const [key, value] of Object.entries(formData)) {
normalized[dotCase(key)] = value;
}
return normalized;
}
const form = {
firstName: "John",
lastName: "Doe",
emailAddress: "john@example.com",
billingAddress: "123 Main St",
shippingAddress: "456 Oak Ave",
};
console.log(normalizeFormData(form));
// {
// "first.name": "John",
// "last.name": "Doe",
// "email.address": "john@example.com",
// "billing.address": "123 Main St",
// "shipping.address": "456 Oak Ave"
// }
Constants and Enums
import { dotCase } from "text-dot-case";
// Transform constants
dotCase("MAX_FILE_SIZE"); // "max.file.size"
dotCase("DEFAULT_TIMEOUT"); // "default.timeout"
dotCase("ERROR_MESSAGES"); // "error.messages"
dotCase("HTTP_STATUS_CODES"); // "http.status.codes"
dotCase("VALIDATION_RULES"); // "validation.rules"
๐ API Reference
dotCase(input, options?)
Converts a string to dot.case.
Parameters
input
(string
): The string to convertoptions
(Options
, optional): Configuration options
Returns
string
: The dot.case formatted string
Options
interface Options {
// Custom transform function for word processing
transform?: (word: string, index: number, words: string[]) => string;
// Regex to strip characters before processing
stripRegexp?: RegExp;
// Custom split function
split?: (value: string) => string[];
}
๐ง Advanced Configuration
Custom Word Splitting
import { dotCase } from "text-dot-case";
// Split on specific patterns
dotCase("XMLHttpRequest", {
splitRegexp: /([a-z])([A-Z])/g,
}); // "xml.http.request"
// Split on numbers
dotCase("user123data", {
splitRegexp: /([a-zA-Z])(\d)/g,
}); // "user.123.data"
Custom Character Stripping
import { dotCase } from "text-dot-case";
// Strip specific characters
dotCase("hello@world.com", {
stripRegexp: /[@]/g,
}); // "hello.world.com"
// Strip all non-alphanumeric except dots
dotCase("hello!@#world", {
stripRegexp: /[^a-zA-Z0-9.]/g,
}); // "hello.world"
Custom Transform Functions
import { dotCase } from "text-dot-case";
// Preserve specific formatting
dotCase("XML-HTTP-Request", {
transform: (word, index) => {
const acronyms = ["xml", "http", "api", "url"];
if (acronyms.includes(word.toLowerCase())) {
return word.toLowerCase();
}
return word.toLowerCase();
},
}); // "xml.http.request"
// Custom business logic
dotCase("UserV2API", {
transform: (word, index) => {
if (word === "V2") return "v2";
if (word === "API") return "api";
return word.toLowerCase();
},
}); // "user.v2.api"
๐ Bundle Size
This package is optimized for minimal bundle size:
- Minified: ~450B
- Gzipped: ~250B
- Tree-shakeable: Yes
- Side effects: None
๐ Browser Support
- Modern browsers: ES2015+ (Chrome 51+, Firefox 54+, Safari 10+)
- Node.js: 12+
- TypeScript: 4.0+
- Bundle formats: UMD, ESM, CommonJS
๐งช Testing
# Run tests
pnpm test
# Run tests in watch mode
pnpm test --watch
# Run tests with coverage
pnpm test --coverage
# Type checking
pnpm typecheck
# Linting
pnpm lint
๐ Related Packages
text-camel-case
- Convert to camelCasetext-pascal-case
- Convert to PascalCasetext-snake-case
- Convert to snake_casetext-kebab-case
- Convert to kebab-casetext-case
- All case transformations in one package
๐ License
๐ค Contributing
- Fork the repository
- Create your feature branch (
git checkout -b feature/amazing-feature
) - Commit your changes (
git commit -m 'Add some amazing feature'
) - Push to the branch (
git push origin feature/amazing-feature
) - Open a Pull Request
๐ Support
- ๐ง Email: selikhov.dmitrey@gmail.com
- ๐ Issues: GitHub Issues
- ๐ฌ Discussions: GitHub Discussions
- ๐ Documentation: Full Documentation
Made with โค๏ธ by Dmitry Selikhov