Makes it possible to deploy an SST app with plain CDK

sst-cdk-bridge.ts

/* eslint-disable */
import { App } from 'sst/constructs';
import { initProject, useProject } from 'sst/project.js';

export const sstCdkBridgeCreateApp = async (): Promise<void> => {
    const stage = process.env['SST_STAGE']!;

    console.log(`STAGE: ${stage}`);

    await initProject({
        stage,
    });

    const project = useProject();

    const app = new App({
        stage,
        name: project.config.name,
        region: project.config.region,
        mode: 'deploy',
        isActiveStack: () => true,
    });
    const { Stacks } = await import('../node_modules/sst/stacks/index.js');

    const [_metafile, sstConfig] = await Stacks.load(project.paths.config);
    await resolve(sstConfig.stacks(app));

    await app.finish();
};

async function resolve<T>(possiblePromise: Promise<T> | T): Promise<T> {
    if (possiblePromise instanceof Promise) {
        return await Promise.resolve(possiblePromise);
    } else {
        return possiblePromise;
    }
}