feat: add v2 codemod draft (#1950)

packages/codemod/scripts/generateSpecSchemaMap.ts

@@ -0,0 +1,39 @@
+import { readFileSync, writeFileSync } from 'node:fs';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const specTypeSchemaPath = path.resolve(__dirname, '../../core/src/types/specTypeSchema.ts');
+
+const source = readFileSync(specTypeSchemaPath, 'utf8');
+
+// Extract SPEC_SCHEMA_KEYS array entries
+const keysMatch = source.match(/const SPEC_SCHEMA_KEYS = \[([\s\S]*?)\] as const/);
+if (!keysMatch) throw new Error('Could not find SPEC_SCHEMA_KEYS in specTypeSchema.ts');
+
+const protocolSchemas = [...keysMatch[1]!.matchAll(/'([^']+)'/g)].map(m => m[1]!);
+
+// Extract auth schema keys
+const authMatch = source.match(/const authSchemas = \{([\s\S]*?)\} as const/);
+if (!authMatch) throw new Error('Could not find authSchemas in specTypeSchema.ts');
+
+const authSchemas = [...authMatch[1]!.matchAll(/(\w+Schema)/g)].map(m => m[1]!);
+
+const allSchemas = [...protocolSchemas, ...authSchemas].toSorted();
+
+const entries = allSchemas.map((s, i) => `    '${s}'${i < allSchemas.length - 1 ? ',' : ''}`).join('\n');
+
+const output = `// AUTO-GENERATED — do not edit. Run \`pnpm run generate:spec-schemas\` to regenerate.
+export const SPEC_SCHEMA_NAMES: ReadonlySet<string> = new Set([
+${entries}
+]);
+
+export function specSchemaToTypeName(schemaName: string): string | undefined {
+    if (!SPEC_SCHEMA_NAMES.has(schemaName)) return undefined;
+    return schemaName.slice(0, -'Schema'.length);
+}
+`;
+
+const outPath = path.resolve(__dirname, '../src/generated/specSchemaMap.ts');
+writeFileSync(outPath, output);
+console.log(`Wrote ${outPath} (${allSchemas.length} schemas)`);

packages/codemod/scripts/generateVersions.ts

@@ -0,0 +1,34 @@
+import { readFileSync, writeFileSync } from 'node:fs';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const packagesDir = path.resolve(__dirname, '../..');
+
+const PACKAGE_DIRS: Record<string, string> = {
+    '@modelcontextprotocol/client': 'client',
+    '@modelcontextprotocol/server': 'server',
+    '@modelcontextprotocol/node': 'middleware/node',
+    '@modelcontextprotocol/express': 'middleware/express'
+};
+
+const versions: Record<string, string> = {};
+
+for (const [pkg, dir] of Object.entries(PACKAGE_DIRS)) {
+    const pkgJsonPath = path.join(packagesDir, dir, 'package.json');
+    const pkgJson = JSON.parse(readFileSync(pkgJsonPath, 'utf8'));
+    versions[pkg] = `^${pkgJson.version}`;
+}
+
+const entries = Object.entries(versions);
+const lines = entries.map(([pkg, ver], i) => `    '${pkg}': '${ver}'${i < entries.length - 1 ? ',' : ''}`).join('\n');
+
+const output = `// AUTO-GENERATED — do not edit. Run \`pnpm run generate:versions\` to regenerate.
+export const V2_PACKAGE_VERSIONS: Record<string, string> = {
+${lines}
+};
+`;
+
+const outPath = path.resolve(__dirname, '../src/generated/versions.ts');
+writeFileSync(outPath, output);
+console.log(`Wrote ${outPath}`);