javascript / intermediate
Snippet
Object Destructuring with Aliases and Defaults
Intermediate destructuring allows you to rename properties (aliases) while extracting them and provide fallback values if a property is missing in the source object.
snippet.js
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const config = {api_url: 'https://api.example.com',retries: 5};const {api_url: url,retries,timeout = 3000} = config;console.log(`URL: ${url}, Retries: ${retries}, Timeout: ${timeout}`);
nodejs
Breakdown
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api_url: url,
Extracts the 'api_url' property but stores it in a new variable named 'url'.
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timeout = 3000
Assigns the value 3000 to 'timeout' if it is undefined in the config object.