add CI pipeline with lint, test, build

node_modules/synckit/lib/index.d.ts

@@ -0,0 +1,7 @@
+import type { AnyFn, Syncify, SynckitOptions } from './types.js';
+export * from './common.js';
+export * from './constants.js';
+export * from './helpers.js';
+export * from './types.js';
+export declare function createSyncFn<T extends AnyFn>(workerPath: URL | string, timeoutOrOptions?: SynckitOptions | number): Syncify<T>;
+export declare function runAsWorker<T extends AnyFn<Promise<R> | R>, R = ReturnType<T>>(fn: T): void;