Building NPM module fails to find local module

[rajinder-yadav]

Version: Deno 2.1.9

When building a NPM module with deno, it will error out and fail to find the local module.

deno run -A build_npm.ts 0.0.1"

Error

[dnt] Building project...
[dnt] Type checking ESM...
src/main.ts:6:17 - error TS2339: Property 'main' does not exist on type 'ImportMeta'.

6 if (import.meta.main) {
                  ~~~~
src/main_test.ts:2:30 - error TS2307: Cannot find module '@std/assert' or its corresponding type declarations.

2 import { assertEquals } from "@std/assert";
                               ~~~~~~~~~~~~~

error: Uncaught (in promise) Error: Had 2 diagnostics.
          throw new Error(`Had ${diagnostics.length} diagnostics.`);
                ^
    at getProgramAndMaybeTypeCheck (https://deno.land/x/[email protected]/mod.ts:450:17)
    at build (https://deno.land/x/[email protected]/mod.ts:343:17)
    at eventLoopTick (ext:core/01_core.js:177:7)
    at async file:///tmp/npm/myadd/build_npm.ts:5:1

deno.json

{
  "tasks": {
    "dev": "deno run --watch main.ts",
    "npm": "deno run -A build_npm.ts 0.0.1"
  },
  "imports": {
    "@std/assert": "jsr:@std/assert@1"
  }
}

main_test.ts

import { assertEquals } from "@std/assert";
import { myAdd } from "./main.ts";

Deno.test(function addTest() {
  assertEquals(myAdd(2, 3), 5);
});

main.ts

export function myAdd(a: number, b: number): number {
  return a + b;
}

// Learn more at https://docs.deno.com/runtime/manual/examples/module_metadata#concepts
if (import.meta.main) {
  console.log("Add 2 + 3 =", myAdd(2, 3));
}

build_npm.ts

import { build, emptyDir } from "https://deno.land/x/[email protected]/mod.ts";

await emptyDir("./npm");

await build({
  entryPoints: ["./main.ts"],
  outDir: "./npm",
  shims: {
    deno: true,
  },
  package: {
    name: "myapp",
    version: Deno.args[0],
    description:
      "Boolean function that returns whether or not parameter is the number 42",
    license: "MIT",
    repository: {
      type: "git",
      url: "git+https://github.com/lambtron/is-42.git",
    },
    bugs: {
      url: "https://github.com/lambtron/is-42/issues",
    },
  },
  postBuild() {
    Deno.copyFileSync("README.md", "npm/README.md");
  },
});