scriptc/tests/fixtures/npm/node_modules/esmghost/index.js

// Lazy dynamic-import() edges, exercised differentially against Node:
// every import() here targets a module that DOES NOT EXIST, so under Node
// the package loads fine and each import() REJECTS with Node's
// ERR_MODULE_NOT_FOUND at evaluation — scriptc must build (embedding a
// throwing ESM stub per blocked edge) and reject byte-identically at the
// same awaits. The catch happens in here (island-side) so the rejection's
// own properties print without crossing the island boundary.
const fmt = (e) => e.name + "@" + e.code + "@" + JSON.stringify(e.message);

// A bare specifier no node_modules anywhere provides: Node names the
// PACKAGE and the importing file.
export async function probeBare() {
  try {
    await import("ghost-bare-pkg");
    return "loaded";
  } catch (e) {
    return fmt(e);
  }
}

// A relative path that resolves to nothing: Node names the RESOLVED
// absolute path and carries its file:// url on the error.
export async function probeRel() {
  try {
    await import("./missing-rel.js");
    return "loaded";
  } catch (e) {
    return fmt(e) + "@" + String(e.url);
  }
}

// Present but never called: must not break the build or the run.
export function neverCalledImport() {
  return import("never-imported-pkg");
}

// The TRANSITIVE half: ./subgraph.js exists, but its STATIC import targets
// a ghost package — Node links the subgraph at THIS import() and rejects
// it with the missing package's name and the SUB-module as the importer.
export async function probeSubgraph() {
  try {
    await import("./subgraph.js");
    return "loaded";
  } catch (e) {
    return fmt(e);
  }
}