fix codama-idl generation and add meteora example

Author: Nagaprasadvr

packages/nodes-from-anchor/src/v00/ProgramNode.ts

@@ -8,19 +8,19 @@ import { instructionNodeFromAnchorV00 } from './InstructionNode';
 import { pdaNodeFromAnchorV00 } from './PdaNode';
 
 export function programNodeFromAnchorV00(idl: IdlV00): ProgramNode {
-    const origin = (idl.metadata as { origin?: 'anchor' | 'shank' }).origin ?? 'anchor';
+    const origin = (idl?.metadata as { origin?: 'anchor' | 'shank' })?.origin ?? 'anchor';
     const pdas = (idl.accounts ?? []).filter(account => (account.seeds ?? []).length > 0).map(pdaNodeFromAnchorV00);
     const accounts = (idl.accounts ?? []).map(a => accountNodeFromAnchorV00(a, origin));
     const instructions = (idl.instructions ?? []).map(i => instructionNodeFromAnchorV00(i, origin));
     return programNode({
         accounts,
-        definedTypes: (idl.types ?? []).map(definedTypeNodeFromAnchorV00),
-        errors: (idl.errors ?? []).map(errorNodeFromAnchorV00),
+        definedTypes: (idl?.types ?? []).map(definedTypeNodeFromAnchorV00),
+        errors: (idl?.errors ?? []).map(errorNodeFromAnchorV00),
         instructions,
-        name: idl.name ?? '',
+        name: idl?.name ?? '',
         origin,
         pdas,
-        publicKey: (idl.metadata as { address?: string })?.address ?? '',
+        publicKey: (idl?.metadata as { address?: string })?.address ?? '',
         version: idl.version as ProgramVersion,
     });
 }