typescript-json-schema

import * as TJS from 'typescript-json-schema'; import { resolve } from 'path'; import * as fs from 'fs'; // Define your TypeScript interface or type const typeScriptCode = ` export interface User { id: number; name: string; email?: string; isActive: boolean; roles: ('admin' | 'user')[]; createdAt: Date; } `; const tempFilePath = resolve(__dirname, 'temp.ts'); fs.writeFileSync(tempFilePath, typeScriptCode); // Optionally pass argument to schema generator const settings: TJS.PartialArgs = { required: true, // Generate 'required' array for non-optional properties noExtraProps: true, // Disable additional properties in objects by default strictNullChecks: true, // Make values non-nullable by default titles: true, // Create titles in the output schema }; // Optionally pass ts compiler options const compilerOptions: TJS.CompilerOptions = { strictNullChecks: true, esModuleInterop: true, }; // Get a TypeScript Program from the file const program = TJS.getProgramFromFiles( [tempFilePath], compilerOptions, __dirname // Base path for the program ); // Build the schema generator const generator = TJS.buildGenerator(program, settings); // Generate the schema for a specific type (e.g., 'User') const schema = generator?.getSchemaForSymbol('User'); if (schema) { console.log(JSON.stringify(schema, null, 2)); } else { console.error('Failed to generate schema for User.'); } // Clean up the temporary file fs.unlinkSync(tempFilePath);