@secondlayer/bundler

Bundles a Secondlayer subgraph definition into a single deployable artifact. It compiles a defineSubgraph(...) TypeScript module (and its imports) with esbuild, then extracts the subgraph's name, sources, schema, and handler code ready for deployment.

Used internally by @secondlayer/cli and @secondlayer/mcp when you run sl subgraphs deploy.

Install

bun add @secondlayer/bundler

Usage

import { bundleSubgraphCode } from "@secondlayer/bundler";

const code = await Bun.file("subgraphs/my-contract.ts").text();
const bundle = await bundleSubgraphCode(code);

bundle.name;        // subgraph name
bundle.sources;     // event filters, keyed by source name
bundle.schema;      // declared table schema
bundle.handlerCode; // bundled handler module (string)

Bundles larger than SUBGRAPH_BUNDLE_MAX_BYTES (4 MB) throw BundleSizeError.

License

MIT