Context Api & Dependencies Interview Questions
Comprehensive context api & dependencies interview questions and answers for Svelte. Prepare for your next job interview with expert guidance.
Questions Overview
1. What is the Context API in Svelte?
Basic2. How do you set context in Svelte?
Basic3. How do you get context in Svelte?
Basic4. What is context key uniqueness?
Basic5. How do you handle context lifecycle?
Basic6. What are typical context use cases?
Basic7. How do you share functions via context?
Basic8. What is the context scope?
Basic9. How do you handle missing context?
Basic10. What is context vs stores?
Basic11. How do you implement context patterns?
Moderate12. How do you handle context updates?
Moderate13. How do you implement context validation?
Moderate14. How do you handle context dependencies?
Moderate15. How do you implement context composition?
Moderate16. How do you handle context initialization?
Moderate17. How do you implement context middleware?
Moderate18. How do you handle context errors?
Moderate19. How do you optimize context usage?
Moderate20. How do you handle context cleanup?
Moderate21. How do you implement advanced context patterns?
Advanced22. How do you implement context testing?
Advanced23. How do you implement context monitoring?
Advanced24. How do you implement context documentation?
Advanced25. How do you implement context versioning?
Advanced26. How do you implement context security?
Advanced27. How do you implement context debugging?
Advanced28. How do you implement context performance monitoring?
Advanced29. How do you implement context dependency injection?
Advanced30. How do you implement context type safety?
Advanced1. What is the Context API in Svelte?
BasicThe Context API allows passing data through the component tree without prop drilling. Uses setContext and getContext functions. Context is available to component and its descendants. Useful for sharing data/functionality.
2. How do you set context in Svelte?
BasicContext is set using setContext function from svelte. Example: setContext('key', value). Must be called during component initialization. Value can be any type including functions.
3. How do you get context in Svelte?
BasicContext is retrieved using getContext function. Example: const value = getContext('key'). Must use same key as setContext. Available in component and child components.
4. What is context key uniqueness?
BasicContext keys must be unique within component tree. Often use symbols for guaranteed uniqueness. Example: const key = Symbol(). Prevents key collisions between different contexts.
5. How do you handle context lifecycle?
BasicContext exists throughout component lifecycle. Created during initialization. Available until component destruction. Cannot be changed after initialization. New values require component reinitialization.
6. What are typical context use cases?
BasicCommon uses include theme data, localization, authentication state, shared functionality. Useful for cross-cutting concerns. Avoids prop drilling. Supports component composition.
7. How do you share functions via context?
BasicFunctions can be shared through context. Example: setContext('api', { method: () => {} }). Allows child components to access shared methods. Supports dependency injection pattern.
8. What is the context scope?
BasicContext is scoped to component and descendants. Not available to parent or sibling components. Multiple instances create separate contexts. Follows component hierarchy.
9. How do you handle missing context?
BasicgetContext returns undefined if context not found. Should handle undefined case. Can provide default values. Consider error handling for required context.
10. What is context vs stores?
BasicContext is static, set during initialization. Stores are reactive, can change over time. Context good for static values/dependencies. Stores better for changing state.
11. How do you implement context patterns?
ModerateContext patterns include provider components, dependency injection, service locator. Handle context composition. Support context inheritance. Implement context strategies.
12. How do you handle context updates?
ModerateContext updates require component reinitialization. Can combine with stores for reactive updates. Handle update propagation. Manage update lifecycle.
13. How do you implement context validation?
ModerateContext validation ensures valid context values. Handle type checking. Support validation rules. Implement error handling. Manage validation state.
14. How do you handle context dependencies?
ModerateContext dependencies manage relationships between contexts. Handle dependency order. Support circular dependencies. Implement dependency resolution.
15. How do you implement context composition?
ModerateContext composition combines multiple contexts. Handle context merging. Support context inheritance. Implement composition patterns.
16. How do you handle context initialization?
ModerateContext initialization sets up initial context state. Handle async initialization. Support initialization order. Implement initialization strategies.
17. How do you implement context middleware?
ModerateContext middleware processes context operations. Handle context transformation. Support middleware chain. Implement middleware patterns.
18. How do you handle context errors?
ModerateContext error handling manages error states. Handle missing context. Support error recovery. Implement error boundaries.
19. How do you optimize context usage?
ModerateContext optimization improves performance. Handle context caching. Support selective updates. Implement optimization strategies.
20. How do you handle context cleanup?
ModerateContext cleanup manages resource disposal. Handle cleanup order. Support cleanup hooks. Implement cleanup strategies.
21. How do you implement advanced context patterns?
AdvancedAdvanced patterns include context injection, service location, dependency trees. Handle complex dependencies. Support pattern composition.
22. How do you implement context testing?
AdvancedContext testing verifies context behavior. Handle test isolation. Support integration testing. Implement test utilities.
23. How do you implement context monitoring?
AdvancedContext monitoring tracks context usage. Handle performance tracking. Support debugging tools. Implement monitoring strategies.
24. How do you implement context documentation?
AdvancedContext documentation describes context usage. Generate documentation automatically. Support example usage. Manage documentation updates.
25. How do you implement context versioning?
AdvancedContext versioning handles API changes. Implement version migration. Support backwards compatibility. Manage version state.
26. How do you implement context security?
AdvancedContext security prevents unauthorized access. Handle access control. Support security policies. Implement security measures.
27. How do you implement context debugging?
AdvancedContext debugging tracks context issues. Handle debugging tools. Support state inspection. Implement debug logging.
28. How do you implement context performance monitoring?
AdvancedPerformance monitoring tracks context efficiency. Handle metrics collection. Support performance analysis. Implement optimization strategies.
29. How do you implement context dependency injection?
AdvancedDependency injection manages component dependencies. Handle injection patterns. Support service location. Implement injection strategies.
30. How do you implement context type safety?
AdvancedType safety ensures correct context usage. Handle TypeScript integration. Support type checking. Implement type definitions.