zonder/dist/lib/ponder/generateIndex.js

Ergonomic multi-chain indexing framework with dual runtime support for Ponder and Envio.

import { safeWriteFileSync } from '../utils/safeWrite.js';
export function generateIndex() {
    return `/// @ts-nocheck - Ponder type generation does not work with zonder
// This file is auto-generated by zonder. Do not edit manually.

import { EventNames, ponder } from "ponder:registry";
import schema from "ponder:schema";
import { zonderConfig } from "../ponder.config";
import { replaceBigInts } from "ponder";

Object.entries(zonderConfig.contracts).forEach(([contractName, abi]) => {
  const events = abi.filter((e) => e.type === "event");
  events.forEach((eventDefinition) => {
    const listenerName =
      \`\${contractName}:\${eventDefinition.name}\` as EventNames;
    ponder.on<EventNames>(listenerName, async ({ event, context }) => {
      if (!("args" in event)) {
        throw new Error("Event object must have args");
      }

      const table = (schema as any)[contractName][eventDefinition.name];
      const eventArgs = Object.fromEntries(
        Object.entries(event.args || {}).map(([key, value]) => [
          \`evt_\${key}\`,
          eventDefinition.inputs
            .find((e) => e.name === key)!
            .type.startsWith("tuple")
            ? replaceBigInts(value, (v) => String(v))
            : value,
        ])
      );

      const values = {
        id: event.id,
        chainId: context.chain.id,
        txHash: event.transaction.hash,
        blockNumber: event.block.number,
        timestamp: event.block.timestamp,
        logIndex: event.log.logIndex,
        logAddress: event.log.address,
        ...eventArgs,
      };
      await context.db.insert(table).values(values);
    });
  });
});
`;
}
// Script wrapper for CLI usage
export function generateAndWriteIndex(outputPath = './src/index.ts', overwrite = false) {
    const indexContent = generateIndex();
    safeWriteFileSync(outputPath, indexContent, { overwrite });
}