python-to-typescript-porting-mcp-server/dist/tools/validation.js

Comprehensive MCP server providing systematic tools and references for Python-to-TypeScript porting with real-world examples

import { z } from "zod";
import chalk from "chalk";
class ValidationHelper {
    strategies = {
        "type-safety": {
            name: "Type Safety Validation",
            description: "Ensure TypeScript types correctly represent Python behavior",
            complexity: "moderate",
            tools: ["TypeScript compiler", "tsc --noEmit", "ESLint TypeScript rules"],
            steps: [
                "Enable strict mode in tsconfig.json",
                "Use TypeScript compiler to check for type errors",
                "Set up ESLint with TypeScript rules",
                "Add type assertions for complex conversions",
                "Use branded types for domain-specific values"
            ],
            examples: [
                "Verify union types handle all Python cases",
                "Check optional types for None handling",
                "Validate generic type parameters"
            ]
        },
        "behavioral": {
            name: "Behavioral Equivalence Testing",
            description: "Verify TypeScript code produces same results as Python",
            complexity: "complex",
            tools: ["Jest", "Property-based testing", "Golden master testing"],
            steps: [
                "Set up parallel test suites",
                "Create property-based tests with fast-check",
                "Implement golden master testing for complex functions",
                "Test edge cases and error conditions",
                "Compare outputs with structured diff tools"
            ],
            examples: [
                "Compare function outputs for same inputs",
                "Test error handling equivalence",
                "Validate data structure transformations"
            ]
        },
        "performance": {
            name: "Performance Validation",
            description: "Ensure TypeScript version meets performance requirements",
            complexity: "moderate",
            tools: ["Node.js profiler", "Benchmark.js", "Chrome DevTools"],
            steps: [
                "Set up performance benchmarks",
                "Profile memory usage patterns",
                "Compare execution times",
                "Identify performance bottlenecks",
                "Optimize critical paths"
            ],
            examples: [
                "Benchmark algorithm implementations",
                "Memory usage comparison",
                "Throughput testing for data processing"
            ]
        }
    };
    getValidationStrategy(input) {
        try {
            const data = input;
            if (!data.validationType || typeof data.validationType !== 'string') {
                throw new Error('validationType is required and must be a string');
            }
            const strategy = this.strategies[data.validationType.toLowerCase()];
            if (!strategy) {
                return {
                    content: [{
                            type: "text",
                            text: JSON.stringify({
                                validationType: data.validationType,
                                found: false,
                                availableStrategies: Object.keys(this.strategies),
                                message: "Available validation strategies: " + Object.keys(this.strategies).join(", ")
                            }, null, 2)
                        }]
                };
            }
            const visualization = this.visualizeStrategy(strategy);
            console.error(visualization);
            return {
                content: [{
                        type: "text",
                        text: JSON.stringify(strategy, null, 2)
                    }]
            };
        }
        catch (error) {
            return {
                content: [{
                        type: "text",
                        text: JSON.stringify({
                            error: error instanceof Error ? error.message : String(error),
                            status: 'failed'
                        }, null, 2)
                    }],
                isError: true
            };
        }
    }
    visualizeStrategy(strategy) {
        let output = `\n${chalk.bold(`✅ VALIDATION STRATEGY: ${strategy.name}`)}\n\n`;
        output += `${chalk.cyan('Description:')} ${strategy.description}\n`;
        output += `${chalk.cyan('Complexity:')} ${strategy.complexity}\n\n`;
        output += `${chalk.yellow('Required Tools:')}\n`;
        strategy.tools.forEach(tool => {
            output += `  • ${tool}\n`;
        });
        output += '\n';
        output += `${chalk.green('Implementation Steps:')}\n`;
        strategy.steps.forEach((step, index) => {
            output += `  ${index + 1}. ${step}\n`;
        });
        output += '\n';
        output += `${chalk.blue('Examples:')}\n`;
        strategy.examples.forEach(example => {
            output += `  • ${example}\n`;
        });
        return output;
    }
}
export async function registerValidationTool(server) {
    const helper = new ValidationHelper();
    server.tool("validation-strategy", "Get validation strategies for ensuring correctness of Python-to-TypeScript conversions.", {
        validationType: z.enum(["type-safety", "behavioral", "performance"]).describe("Type of validation strategy needed"),
        context: z.string().optional().describe("Additional context about the validation needs")
    }, {
        title: "Porting Validation Strategy",
        readOnlyHint: true,
        idempotentHint: true
    }, async (args) => helper.getValidationStrategy(args));
    console.error(chalk.green("✅ Registered validation tool"));
}
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