svelte-kit-sst/dist/index.js

Adapter for SvelteKit apps to work on AWS Lambda and AWS Lambda@Edge.

import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";
const __dirname = fileURLToPath(new URL(".", import.meta.url));
export default function () {
    const adapter = {
        name: "svelte-kit-sst",
        async adapt(builder) {
            const out = path.join(".svelte-kit", "svelte-kit-sst");
            const clientDir = path.join(out, "client");
            const serverDir = path.join(out, "server");
            const prerenderedDir = path.join(out, "prerendered");
            // Cleanup output folder
            builder.rimraf(out);
            builder.mkdirp(clientDir);
            builder.mkdirp(serverDir);
            builder.mkdirp(prerenderedDir);
            // Create static output
            builder.log.minor("Copying assets...");
            builder.writeClient(clientDir);
            const prerenderedFiles = builder.writePrerendered(prerenderedDir);
            // Create Lambda function
            builder.log.minor("Generating server function...");
            builder.writeServer(serverDir);
            // copy over handler files in server handler folder
            builder.copy(path.join(__dirname, "handler"), path.join(serverDir, "lambda-handler"));
            // save a list of files in server handler folder
            fs.writeFileSync(path.join(serverDir, "lambda-handler", "prerendered-file-list.js"), `export default ${JSON.stringify(prerenderedFiles)}`);
        },
    };
    return adapter;
}