To avoid disruption, it's best to gradually introduce ESLint. Start by applying it to new code and address legacy code issues incrementally. Linting the entire codebase at once might be overwhelming and disruptive. Disabling ESLint for legacy code or ignoring it is not a recommended approach for maintaining code quality.

The return statement in a JavaScript function is used to return a value from the function and immediately exit the function. It is used to send data back to the caller of the function. The other options do not describe the purpose of the return statement.

export default is used when you want to export a single value, function, or class as the default export of a module. This allows you to import it using any name you prefer when importing. Named exports are used when you want to export multiple values with specific names.

To expose a global utility function in Node.js, you can use global.utility = require('./utility');. This allows you to require the module once and make it accessible globally across different modules. The other options do not achieve this in the correct way.

When publishing a package to the NPM registry, the package.json file is crucial. This file contains metadata about the package, including its name, version, description, entry points, and most importantly, its dependencies. The package-lock.json file is used to lock dependency versions but is not responsible for defining the package properties. Options 1 and 2 do not exist, and option 3, while related, is not used for defining package properties.

It is advantageous to use stubbing when dealing with external services or APIs in tests because stubbing isolates your tests from the actual external services, making tests more reliable and faster. With stubbing, you can control the responses from external services, ensuring that your tests are not affected by changes or issues with the real services. Options (1), (2), and (4) do not accurately describe the advantages of stubbing in this context.

In a RESTful API, the PUT HTTP method corresponds to the Update operation in CRUD (Create, Read, Update, Delete). It is used to update or modify an existing resource on the server.

In a Write-Around caching strategy, the data is written directly to the database, bypassing the cache. This strategy is useful for data that doesn't need to be immediately cached, such as rarely accessed data or large files.

In JavaScript, objects created using object literal syntax are instances of the Object constructor. This means they inherit properties and methods from the Object prototype.

In Express.js, to catch errors from a promise within a route, the next function should be called with the err as an argument. This allows Express.js to recognize it as an error-handling middleware. Passing error, promise, or next itself would not trigger the error handling mechanism in Express.js.

To ensure minimum latency in a real-time analytics dashboard, using caching mechanisms is essential. Caching can store frequently used aggregated data and serve it quickly, reducing the need for complex queries. Options B and D do not align with best practices for real-time analytics. Option C is a good practice but not as directly related to real-time performance as caching.

call(), apply(), and bind() are methods in JavaScript used to manipulate the context in which a function is executed and to pass arguments to functions. They are commonly used in scenarios like setting the value of 'this' in a function and passing arguments dynamically. None of the other options correctly describe their purpose.