webidl-conversions

import conversions from 'webidl-conversions'; // Example: Implementing a function that mirrors a Web IDL operation function doWebIDLStuff(name, count) { try { // Convert 'name' to DOMString, treating null as empty string const domName = conversions.DOMString(name, { treatNullAsEmptyString: true }); // Convert 'count' to unsigned long, clamping if out of range const ulCount = conversions['unsigned long'](count, { enforceRange: true, clamp: true }); console.log(`Processing item: "${domName}" with count: ${ulCount}`); // Demonstrate another conversion: float const floatValue = conversions.float(Math.PI / 2); console.log(`Float value of PI/2: ${floatValue}`); // Demonstrate object conversion const obj = conversions.object({ a: 1, b: 'hello' }); console.log('Object conversion successful:', obj); return `Processed ${domName} ${ulCount} times.`; } catch (error) { if (error instanceof TypeError) { console.error(`Web IDL Conversion Error: ${error.message}`); return `Failed to process: ${error.message}`; } else { throw error; } } } // Run some examples console.log(doWebIDLStuff('Widget A', 10)); console.log(doWebIDLStuff(null, -5)); // treatNullAsEmptyString and clamp will handle this console.log(doWebIDLStuff('Item C', '100')); // String '100' converts to number 100 console.log(doWebIDLStuff('Invalid Float', NaN)); // float(NaN) will throw a TypeError console.log(doWebIDLStuff('Large Number', 999999999999)); // To run this: save as .mjs and run with Node.js >= 20