Resolution of JS files is not working as expected when using API

[alan-agius4]

TypeScript Version: 2.8.3

Search Terms:
index resolution
resolution

Code

index.js

export * from "./test"

test/index.js

export const x = "hello";

Transpile code;

const ts = require("typescript");

const options = { module: ts.ModuleKind.AMD, target: ts.ScriptTarget.ES5, allowJs: true, outDir: "out" };
const host = ts.createCompilerHost(options);
const program = ts.createProgram(["index.js"], options, host);
program.emit();

Expected behavior:
both files get emitted and downleveled

Actual behavior:
test/index.js is not resolved and only the root index.js is being transpiled, when using the API to downlevel some JS files. If I change the export to export * from "./test/index" all files are being transpiled.

Related Issues:
ng-packagr/ng-packagr#784

[ajafff]

you can use --traceResolution to get detailed output about the module resolution.

You probably want to use --moduleResolution node.

option	type	default
--moduleResolution	string	module === "AMD" or "System" or "ES6" ? "Classic" : "Node"

[alan-agius4]

You are right, I was having an exception Debug Failure. Unexpected moduleResolution: node but now I realised that it should be used as enumeration moduleResolution: ModuleResolutionKind.NodeJs when using the API.

Silly me!