Content Emitters

/**
 * Renders a DocNode tree back to TSDoc markup
 */
class TSDocEmitter {
  constructor();
  
  /** Render any DocNode back to TSDoc format */
  renderDocNode(docNode: DocNode): string;
  
  /** Render a complete DocComment back to TSDoc format */
  renderDocComment(docComment: DocComment): string;
}

import { TSDocParser, TSDocEmitter } from "@microsoft/tsdoc";

const parser = new TSDocParser();
const emitter = new TSDocEmitter();

// Parse a comment
const context = parser.parseString(`
  /**
   * Calculates the area.
   * @param width - The width value
   * @param height - The height value
   * @returns The calculated area
   * @beta
   * @example
   * \`\`\`typescript
   * const area = calculateArea(10, 20);
   * console.log(area); // 200
   * \`\`\`
   */
`);

// Render back to TSDoc
const renderedComment = emitter.renderDocComment(context.docComment);
console.log(renderedComment);

// Render individual sections
const remarksSection = context.docComment.remarksBlock;
if (remarksSection) {
  const renderedRemarks = emitter.renderDocNode(remarksSection);
  console.log("Remarks:", renderedRemarks);
}

// Render parameter blocks
context.docComment.parameterBlocks.forEach(paramBlock => {
  const renderedParam = emitter.renderDocNode(paramBlock);
  console.log("Parameter:", renderedParam);
});

/**
 * Extracts plain text from a DocNode tree, removing markup
 */
class PlainTextEmitter {
  constructor();
  
  /** Extract plain text from any DocNode */
  renderDocNode(docNode: DocNode): string;
  
  /** Extract plain text from a complete DocComment */
  renderDocComment(docComment: DocComment): string;
}

import { TSDocParser, PlainTextEmitter } from "@microsoft/tsdoc";

const parser = new TSDocParser();
const plainTextEmitter = new PlainTextEmitter();

// Parse a complex comment with markup
const context = parser.parseString(`
  /**
   * This method {@link MyClass.helper | helps} with calculations.
   * 
   * It supports **bold** and \`inline code\` formatting.
   * 
   * @param value - The input {@link InputType | value}
   * @returns Processed result
   * 
   * @example
   * Here's how to use it:
   * \`\`\`typescript
   * const result = process(42);
   * \`\`\`
   */
`);

// Extract plain text (removes all markup)
const plainText = plainTextEmitter.renderDocComment(context.docComment);
console.log("Plain text:", plainText);
// Output: "This method helps with calculations. It supports bold and inline code formatting."

// Extract plain text from specific sections
const summaryText = plainTextEmitter.renderDocNode(context.docComment.summarySection);
console.log("Summary:", summaryText);

// Extract parameter descriptions
context.docComment.parameterBlocks.forEach(paramBlock => {
  const paramText = plainTextEmitter.renderDocNode(paramBlock.content);
  console.log(`${paramBlock.parameterName}: ${paramText}`);
});

/**
 * Utility for efficiently building strings
 */
class StringBuilder implements IStringBuilder {
  constructor();
  
  /** Append text to the string being built */
  append(text: string): void;
  
  /** Get the final built string */
  toString(): string;
}

/**
 * Interface for string building operations
 */
interface IStringBuilder {
  /** Append text to the string being built */
  append(text: string): void;
  
  /** Get the final built string */
  toString(): string;
}

import { StringBuilder } from "@microsoft/tsdoc";

// Basic string building
const builder = new StringBuilder();
builder.append("Hello");
builder.append(" ");
builder.append("world");
console.log(builder.toString()); // "Hello world"

// Building formatted output
function formatParameterList(paramBlocks: ReadonlyArray<DocParamBlock>): string {
  const builder = new StringBuilder();
  
  builder.append("Parameters:\n");
  paramBlocks.forEach((param, index) => {
    builder.append(`  ${index + 1}. ${param.parameterName}\n`);
  });
  
  return builder.toString();
}

// Custom rendering with StringBuilder
function renderCustomSummary(docComment: DocComment): string {
  const builder = new StringBuilder();
  const plainEmitter = new PlainTextEmitter();
  
  // Extract summary text
  const summaryText = plainEmitter.renderDocNode(docComment.summarySection);
  builder.append("Summary: ");
  builder.append(summaryText);
  
  // Add parameter count
  if (docComment.parameterBlocks.length > 0) {
    builder.append(`\nParameters: ${docComment.parameterBlocks.length}`);
  }
  
  // Add modifiers
  const modifiers = docComment.modifierTagSet;
  if (modifiers.isBeta) {
    builder.append("\n[BETA API]");
  }
  if (modifiers.isDeprecated) {
    builder.append("\n[DEPRECATED]");
  }
  
  return builder.toString();
}

import { 
  TSDocParser, 
  TSDocEmitter, 
  PlainTextEmitter,
  DocNode,
  DocCodeSpan,
  DocFencedCode,
  DocLinkTag
} from "@microsoft/tsdoc";

class CustomMarkdownEmitter {
  private tsdocEmitter = new TSDocEmitter();
  private plainEmitter = new PlainTextEmitter();
  
  renderAsMarkdown(docComment: DocComment): string {
    const builder = new StringBuilder();
    
    // Render summary as markdown
    const summaryText = this.plainEmitter.renderDocNode(docComment.summarySection);
    builder.append(`## Summary\n\n${summaryText}\n\n`);
    
    // Render parameters
    if (docComment.parameterBlocks.length > 0) {
      builder.append("## Parameters\n\n");
      docComment.parameterBlocks.forEach(param => {
        const description = this.plainEmitter.renderDocNode(param.content);
        builder.append(`- **${param.parameterName}**: ${description}\n`);
      });
      builder.append("\n");
    }
    
    // Render examples
    if (docComment.exampleBlocks.length > 0) {
      builder.append("## Examples\n\n");
      docComment.exampleBlocks.forEach((example, index) => {
        const exampleText = this.extractCodeBlocks(example.content);
        builder.append(`### Example ${index + 1}\n\n${exampleText}\n\n`);
      });
    }
    
    return builder.toString();
  }
  
  private extractCodeBlocks(section: DocSection): string {
    // Custom logic to find and format code blocks
    const builder = new StringBuilder();
    
    const findCodeNodes = (node: DocNode): void => {
      if (node instanceof DocFencedCode) {
        builder.append(`\`\`\`${node.language}\n${node.code}\n\`\`\`\n`);
      } else if (node instanceof DocCodeSpan) {
        builder.append(`\`${node.code}\`\n`);
      }
      
      for (const child of node.getChildNodes()) {
        if (child) {
          findCodeNodes(child);
        }
      }
    };
    
    findCodeNodes(section);
    return builder.toString();
  }
}

// Usage
const parser = new TSDocParser();
const customEmitter = new CustomMarkdownEmitter();

const context = parser.parseString("/** ... */");
const markdown = customEmitter.renderAsMarkdown(context.docComment);

class ContentExtractor {
  private plainEmitter = new PlainTextEmitter();
  
  /** Extract all code examples from a comment */
  extractCodeExamples(docComment: DocComment): string[] {
    const examples: string[] = [];
    
    const extractFromNode = (node: DocNode): void => {
      if (node instanceof DocFencedCode) {
        examples.push(node.code);
      }
      
      for (const child of node.getChildNodes()) {
        if (child) {
          extractFromNode(child);
        }
      }
    };
    
    // Extract from example blocks
    docComment.exampleBlocks.forEach(block => {
      extractFromNode(block.content);
    });
    
    return examples;
  }
  
  /** Extract all @see references */
  extractSeeReferences(docComment: DocComment): string[] {
    return docComment.seeBlocks.map(block => 
      this.plainEmitter.renderDocNode(block.content).trim()
    );
  }
  
  /** Extract parameter information */
  extractParameterInfo(docComment: DocComment): Array<{name: string, description: string}> {
    return docComment.parameterBlocks.map(param => ({
      name: param.parameterName,
      description: this.plainEmitter.renderDocNode(param.content).trim()
    }));
  }
  
  /** Get API stability information */
  getStabilityInfo(docComment: DocComment): {
    stability: 'stable' | 'beta' | 'alpha' | 'experimental' | 'deprecated';
    isInternal: boolean;
  } {
    const modifiers = docComment.modifierTagSet;
    
    let stability: 'stable' | 'beta' | 'alpha' | 'experimental' | 'deprecated' = 'stable';
    
    if (modifiers.isAlpha) stability = 'alpha';
    else if (modifiers.isBeta) stability = 'beta';
    else if (modifiers.isExperimental) stability = 'experimental';
    else if (docComment.deprecatedBlock) stability = 'deprecated';
    
    return {
      stability,
      isInternal: modifiers.isInternal
    };
  }
}