sugar-core

import { defineInstance } from 'sugar-core'; // Demonstrates defining a custom instance method 'pluralize' for strings. // This method, when defined, will be available on string instances if // the main Sugar.js library is configured in 'extended mode'. // The 'defineInstance' method expects the instance (the string itself) // as its first argument and discourages using 'this'. defineInstance('pluralize', function(str: string, count: number = 2): string { if (count === 1) { return str; } // Simple pluralization logic for demonstration purposes if (str.endsWith('y') && !str.endsWith('ay') && !str.endsWith('ey') && !str.endsWith('oy')) { return str.slice(0, -1) + 'ies'; } return str + 's'; }); // Example usage (requires Sugar.js extended mode or chainables for full functionality) const singleWord = 'cat'; const multipleWord = 'dog'; const trickyWord = 'fly'; console.log(`'${singleWord}' pluralized:`, (singleWord as any).pluralize(1)); // Expected: 'cat' console.log(`'${singleWord}' pluralized:`, (singleWord as any).pluralize(2)); // Expected: 'cats' console.log(`'${multipleWord}' pluralized:`, (multipleWord as any).pluralize()); // Expected: 'dogs' console.log(`'${trickyWord}' pluralized:`, (trickyWord as any).pluralize()); // Expected: 'flies' // Note: The 'as any' cast is used here to bypass TypeScript's type checking // because 'sugar-core' extends native prototypes at runtime, which TS doesn't // inherently know without explicit declaration merging.