unrs-resolver/napi/test.mjs

import assert from "assert";
import path from "path";
import resolve, { ResolverFactory } from "./index.js";

console.log(`Testing on ${process.platform}-${process.arch}`);

const dir = import.meta.dirname;

// `resolve`
assert.deepStrictEqual(resolve.sync(dir, "./index.js").path, path.join(dir, "index.js"));

// `ResolverFactory`
const resolver = new ResolverFactory();
assert.deepStrictEqual(resolver.sync(dir, "./index.js").path, path.join(dir, "index.js"));

assert.strict(resolver.sync(dir, "./ts").error.length > 0);

resolver.async(dir, "./ts").then((result) => assert.strict(result.error.length > 0));

const newResolver = resolver.cloneWithOptions({});
newResolver.clearCache();

// custom constructor
const resolver2 = new ResolverFactory({
  extensions: [".mjs"],
});

// After add `.ts` extension, resolver can resolve `ts` as `ts.ts` now
assert.deepStrictEqual(resolver2.sync(dir, "./test.mjs").path, path.join(dir, "test.mjs"));