@mastra/core/dist/registry-generator-I6S4ARS6.js

Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.

import fs from 'fs/promises';
import path from 'path';

async function atomicWriteFile(filePath, content, encoding = "utf-8") {
  const randomSuffix = Math.random().toString(36).substring(2, 15);
  const tempPath = `${filePath}.${process.pid}.${Date.now()}.${randomSuffix}.tmp`;
  try {
    await fs.writeFile(tempPath, content, encoding);
    await fs.rename(tempPath, filePath);
  } catch (error) {
    try {
      await fs.unlink(tempPath);
    } catch {
    }
    throw error;
  }
}
async function fetchProvidersFromGateways(gateways) {
  const allProviders = {};
  const allModels = {};
  const maxRetries = 3;
  for (const gateway of gateways) {
    let lastError = null;
    for (let attempt = 1; attempt <= maxRetries; attempt++) {
      try {
        const providers = await gateway.fetchProviders();
        const isProviderRegistry = gateway.id === "models.dev";
        for (const [providerId, config] of Object.entries(providers)) {
          const typeProviderId = isProviderRegistry ? providerId : providerId === gateway.id ? gateway.id : `${gateway.id}/${providerId}`;
          allProviders[typeProviderId] = config;
          allModels[typeProviderId] = config.models.sort();
        }
        lastError = null;
        break;
      } catch (error) {
        lastError = error instanceof Error ? error : new Error(String(error));
        if (attempt < maxRetries) {
          const delayMs = Math.min(1e3 * Math.pow(2, attempt - 1), 5e3);
          await new Promise((resolve) => setTimeout(resolve, delayMs));
        }
      }
    }
    if (lastError) {
      throw lastError;
    }
  }
  return { providers: allProviders, models: allModels };
}
function generateTypesContent(models) {
  const providerModelsEntries = Object.entries(models).map(([provider, modelList]) => {
    const modelsList = modelList.map((m) => `'${m}'`);
    const needsQuotes = /[^a-zA-Z0-9_$]/.test(provider);
    const providerKey = needsQuotes ? `'${provider}'` : provider;
    const singleLine = `  readonly ${providerKey}: readonly [${modelsList.join(", ")}];`;
    if (singleLine.length > 120) {
      const formattedModels = modelList.map((m) => `    '${m}',`).join("\n");
      return `  readonly ${providerKey}: readonly [
${formattedModels}
  ];`;
    }
    return singleLine;
  }).join("\n");
  return `/**
 * THIS FILE IS AUTO-GENERATED - DO NOT EDIT
 * Generated from model gateway providers
 */

/**
 * Provider models mapping type
 * This is derived from the JSON data and provides type-safe access
 */
export type ProviderModelsMap = {
${providerModelsEntries}
};

/**
 * Union type of all registered provider IDs
 */
export type Provider = keyof ProviderModelsMap;

/**
 * Provider models mapping interface
 */
export interface ProviderModels {
  [key: string]: string[];
}

/**
 * OpenAI-compatible model ID type
 * Dynamically derived from ProviderModelsMap
 * Full provider/model paths (e.g., "openai/gpt-4o", "anthropic/claude-3-5-sonnet-20241022")
 */
export type ModelRouterModelId =
  | {
      [P in Provider]: \`\${P}/\${ProviderModelsMap[P][number]}\`;
    }[Provider]
  | (string & {});

/**
 * Extract the model part from a ModelRouterModelId for a specific provider
 * Dynamically derived from ProviderModelsMap
 * Example: ModelForProvider<'openai'> = 'gpt-4o' | 'gpt-4-turbo' | ...
 */
export type ModelForProvider<P extends Provider> = ProviderModelsMap[P][number];
`;
}
async function writeRegistryFiles(jsonPath, typesPath, providers, models) {
  const jsonDir = path.dirname(jsonPath);
  const typesDir = path.dirname(typesPath);
  await fs.mkdir(jsonDir, { recursive: true });
  await fs.mkdir(typesDir, { recursive: true });
  const registryData = {
    providers,
    models,
    version: "1.0.0"
  };
  await atomicWriteFile(jsonPath, JSON.stringify(registryData, null, 2), "utf-8");
  const typeContent = generateTypesContent(models);
  await atomicWriteFile(typesPath, typeContent, "utf-8");
}

export { atomicWriteFile, fetchProvidersFromGateways, generateTypesContent, writeRegistryFiles };
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