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Expert in creating practical technical articles, skilled in conveying core knowledge points with concise language without missing any key information
npx skill4agent add smallnest/langgraphgo tech-article-writer❌ Poor: "In the practice of modern software development, we often encounter situations where we need to optimize code"
✅ Concise: "Code optimization is a common requirement"
❌ Poor: "This function is very powerful and can greatly improve our work efficiency"
✅ Concise: "This function boosts efficiency by 50%"(Use data to support)
❌ Poor: "Next, let's take a look at the specific usage of this feature"
✅ Concise: "Usage:"(Get straight to the point)Title: Clearly state the problem solved
├── Core Conclusion upfront(1-2 sentences)
├── Problem Background(optional, no more than 100 words)
├── Core Content
│ ├── Knowledge Point 1: Principles + Examples + Key Points
│ ├── Knowledge Point 2: Principles + Examples + Key Points
│ └── Knowledge Point N: Principles + Examples + Key Points
├── Practical Checklist(Executable steps)
├── Frequently Asked Questions(FAQ)
└── Related Resources(optional)## Function Implementation
**Core Principle:** One sentence explaining the implementation mechanism
```typescript
// Environment: Node.js 18+, TypeScript 5.0+
// Key point: Use closures to maintain state isolation
function createCounter() {
let count = 0; // Private variable
return {
increment: () => ++count,
getCount: () => count
};
}
// Usage example
const counter = createCounter();
counter.increment(); // 1
counter.increment(); // 2
console.log(counter.getCount()); // Output: 2
```
**Key Points:**
- Closure variables cannot be modified externally
- Each call to `createCounter()` creates an independent instance
- Applicable scenario: When private state encapsulation is needed| Dimension | Solution A | Solution B |
|------|-------|-------|
| Performance | 10ms | 50ms |
| Memory | 512KB | 2MB |
| Learning Curve | Low | High |Request → Validation → Processing → Return
↓(Failure)
Error Handling**❌ Not Recommended:**
\```
// Inefficient implementation
\```
**✅ Recommended:**
\```
// Efficient implementation
\```**Key Elements:**
- ⚡ Performance: Specific data
- 🔒 Security: Notes
- 📦 Dependencies: Version requirements## Closure Principles
**Daily Analogy:** A closure is like a safe that holds private items(variables), only the person with the key(inner function) can access it.
**Technical Definition:** A combination of a function and its lexical environment reference.
**Core Characteristics:**
1. Inner functions access outer function variables
2. Variables remain after outer function execution completes
3. Forms a private scope## TypeScript Type System Evolution
| Feature | Version | Key Changes |
|------|------|---------|
| `unknown` type | 3.0+ | Type-safe alternative to `any` |
| Optional Chaining `?.` | 3.7+ | Safely access nested properties |
| Template Literal Types | 4.1+ | Type-level string operations |
| `satisfies` Operator | 4.9+ | Type assertion without losing inference |
**Version Detection:**
\```bash
tsc --version # Check TypeScript version
\```## Array Deduplication Performance Comparison
| Method | Time Complexity | 10k Data | 100k Data | Recommended Scenario |
|------|----------|---------|----------|---------|
| Set | O(n) | 2ms | 15ms | General preferred |
| filter | O(n²) | 80ms | 8000ms | Not recommended |
| reduce | O(n²) | 75ms | 7500ms | Not recommended |
**Conclusion:** When data volume > 1000, prioritize the `Set` solution.
**Code Implementation:**
\```typescript
// Recommended: Use Set (O(n))
const unique = [...new Set(array)];
// Not recommended: filter (O(n²))
const unique = array.filter((item, index) =>
array.indexOf(item) === index
);
\```## React Hooks Rules
**Core Rules:**
1. Only call at the top level(not in loops/conditions/nested functions)
2. Only call in React function components or custom Hooks
**Principle:** React relies on Hook call order to maintain state. [Detailed Principle](Link)
**Violation Examples:**
\```typescript
// ❌ Error: Conditional call
if (condition) {
const [state] = useState(0); // Violates Rule 1
}
// ✅ Correct: Top-level call
const [state] = useState(0);
if (condition) {
// Use state
}
\```## Webpack Configuration Optimization
Use Tree Shaking(dead code elimination) to reduce bundle size. Configure `mode: 'production'` to enable automatically.
For detailed principles of Tree Shaking, refer to [Official Documentation](Link).
**Configuration Example:**
\```javascript
module.exports = {
mode: 'production', // Enables Tree Shaking
optimization: {
usedExports: true
}
};
\```// ❌ Low-quality comments
// Create an array
const arr = [];
// Iterate over array
arr.forEach(item => {
// Print item
console.log(item);
});
// ✅ High-quality comments
// Use Map instead of object: supports non-string keys, better performance
const cache = new Map<number, User>();
// Limit concurrency to 3: Prevent API rate limiting
const results = await pLimit(3).map(urls, fetch);
// Delay 100ms: Wait for DOM update to complete(browser rendering cycle ~16ms)
await sleep(100);# [Technology Name] Core Principles
**One-sentence Summary:** [Essential Definition]
## Core Concepts
[2-3 sentences explaining what it is and why it's needed]
## Working Mechanism
[Explain operation principles using lists or flowcharts]
## Code Example
[Minimal runnable example + key comments]
## Key Points
- **Advantages:** [List 2-3 points]
- **Limitations:** [List 2-3 points]
- **Applicable Scenarios:** [Specific scenario description]
## Common Pitfalls
- [Pitfall 1] - [How to Avoid]
- [Pitfall 2] - [How to Avoid]
## Further Reading
- [Official Documentation Link]
- [Best Practices Article]# Complete Guide to [Task Name]
**Objective:** [One sentence describing the outcome after completion]
**Environment Requirements:**
- [Dependency 1]: Version requirement
- [Dependency 2]: Version requirement
## Quick Start
\```bash
# 3-5 commands to implement basic functionality
\```
## Detailed Steps
### Step 1: [What to do first]
[Brief explanation] + [Code example]
**Key Points:**
- [Key configuration item explanation]
- [Potential issues]
### Step 2: [What to do next]
[Same structure as above]
## Configuration Optimization
| Parameter | Default Value | Recommended Value | Explanation |
|------|-------|-------|------|
| [Parameter 1] | [Value] | [Value] | [Impact] |
## Frequently Asked Questions
**Q: [Question 1]**
A: [Solution]
**Q: [Question 2]**
A: [Solution]
## Checklist
- [ ] [Mandatory Step 1]
- [ ] [Mandatory Step 2]# [Technology A] vs [Technology B]: Selection Guide
**Conclusion Upfront:** [One sentence recommending scenarios]
## Core Differences
| Dimension | Technology A | Technology B |
|------|--------|--------|
| Performance | [Data] | [Data] |
| Learning Curve | [Assessment] | [Assessment] |
| Ecosystem | [Assessment] | [Assessment] |
| Applicable Scenarios | [Description] | [Description] |
## Detailed Comparison
### Performance
[Specific test data + analysis]
### Development Experience
[Practical usage experience + code examples]
### Community Ecosystem
[Toolchain, library support status]
## Selection Recommendations
**Scenarios to Choose Technology A:**
- [Scenario 1]
- [Scenario 2]
**Scenarios to Choose Technology B:**
- [Scenario 1]
- [Scenario 2]
## Migration Guide
[Key steps if migrating from A to B is needed]