Node.js uses the __________ algorithm for resolving module paths in ES6.
- "CommonJS"
- "ECMAScript"
- "ES6"
- "Import"
Node.js uses the "ECMAScript" algorithm for resolving module paths in ES6, adhering to the ECMAScript Module specifications. This enables the use of import statements for module loading.
Which module system supports dynamic loading of modules: ES6 Modules or CommonJS?
- ES6 Modules
- CommonJS
- Both support dynamic loading
- Neither supports dynamic loading
ES6 Modules support dynamic loading, allowing modules to be loaded on demand. CommonJS does not provide built-in support for dynamic loading.
In a project where tree shaking is vital for performance, how do you decide between using named and default exports?
- Using named exports for small utility functions and default exports for larger, more central functionalities
- Using default exports for small utility functions and named exports for larger, more central functionalities
- Exclusively using named exports to facilitate tree shaking
- Exclusively using default exports to facilitate tree shaking
When tree shaking is crucial for performance, using named exports for smaller utility functions allows for more granular control over what gets included in the bundle. For larger, more central functionalities, default exports can be beneficial. This approach ensures that only necessary code is bundled, improving the efficiency of tree shaking in eliminating unused code.
Describe the implementation of an async function that awaits user input and then processes it.
- Utilize prompt for user input within the async function
- Implement a callback for user input and await its resolution
- Use await with a promise-based input function
- Incorporate async/await with setTimeout for user input
To implement an async function awaiting user input, you can use await in combination with a promise-based input function. This ensures that the function pauses execution until user input is received, maintaining the asynchronous nature of the application.
In a function that generates HTML content, how would template literals enhance code readability and maintainability?
- They allow embedding variables directly in the string, reducing concatenation complexity.
- They provide a more concise syntax for creating HTML templates.
- They enable the use of complex expressions within the template, improving flexibility.
- They simplify the inclusion of special characters in the HTML content.
Template literals allow for more readable and maintainable code by directly embedding variables and expressions, reducing the need for complex string concatenation.
What is the difference in error handling between then/catch and async/await syntax?
- then/catch is used with synchronous code, and async/await is used with asynchronous code
- then/catch is promise-based, and async/await is generator-based
- then/catch is chaining, and async/await uses try/catch
- then/catch is for handling resolved values, and async/await is for handling rejections
The key difference lies in syntax and structure. then/catch involves chaining promises, while async/await uses a more synchronous and linear try/catch structure. async/await provides a cleaner and more readable way to handle asynchronous operations.
The ________ field in package.json can be used to specify different entry points for importing a package in ES6.
- "main"
- "module"
- "entry"
- "import"
In ES6, the "module" field in package.json is used to specify the entry point for importing a package. It is the path to the main module of the package when imported.
Currying transforms a function with multiple arguments into a sequence of functions each taking a single ________.
- Argument, Value, Parameter, Variable
- Value, Parameter, Argument, Input
- Parameter, Input, Variable, Argument
- Input, Value, Argument, Parameter
Currying involves breaking down a function with multiple arguments into a series of functions, each taking a single parameter. This can enhance the flexibility and composability of functions.
Can a method in an ES6 class be both static and async?
- Yes
- No
- Depends on the method implementation
- Only if the class is marked as async
Yes, a method in an ES6 class can be both static and asynchronous. Static methods are called on the class itself, not on instances, and async methods use the async keyword to indicate asynchronous behavior. Combining these allows the creation of static methods that perform asynchronous tasks.
What is the syntax difference between method definitions in ES6 classes and traditional function expressions?
- ES6 classes use the function keyword
- ES6 classes use the method keyword
- ES6 classes use the def keyword
- ES6 classes use the => arrow syntax
The syntax difference lies in ES6 classes using the => arrow syntax for method definitions, providing a more concise way compared to traditional function expressions. The arrow function automatically binds the method to the class instance.