package.json types/main/module take precedence over conditional exports

Reproduce the issue with the package.json example using microbundle --target node -f esm --generateTypes=true, then compare the result with tsc. Inspect how the build handles the package.json exports, main, module, and types fields alongside the tsconfig.json resolvePackageJsonExports and moduleResolution settings. Done means conditional exports resolve the declared types without requiring a root types field.

Possibly somewhat related to #1085.

Given a package.json:

{
  "main": "./lib/index.cjs",
  "module": "./lib/index.js",
  "type": "module",
  "dependencies": {
    "some-client-with-matching-esm-and-tsconfig": "^x.x.x"
  },
  "exports": {
    ".": {
      "require": {
        "types": "./lib/index.d.ts",
        "default": "./lib/index.cjs"
      },
      "import": {
        "types": "./lib/index.d.ts",
        "default": "./lib/index.js"
      }
    },
    "./package.json": "./package.json"
  },

_without root types property, running:

microbundle --target node -f esm --generateTypes=true

results in error:

(rpt2 plugin) Error: /Users/xxxx/dev/project/dependingclient.ts(197,32): semantic error TS2339: Property 'request' does not exist on type 'DependingClient.ts'.
at RollupContext.error (/Users/xxxx/dev/project/node_modules/rollup-plugin-typescript2/dist/rollup-plugin-typescript2.cjs.js:20259:3

Indicating it cannot find the types specified in the conditional exports.

Working solution: Specify "types": "./lib/index.d.ts" at root-level.
Also works: Remove the "main" and module property

It seems to me package.json conditional exports are not taking precedence over main/module/types

Not sure if related but when in tsconfig.json resolvePackageJsonExports is explicitly set to true (even weirder is that it would be true by default in node16 moduleresolution) , regardless of whether moduleResolution is set to node16, it throws

rpt2: options error TS5098: Option 'resolvePackageJsonExports' can only be used when 'moduleResolution' is set to 'node16', 'nodenext', or 'bundler'. Whereas running the build simple with tsc causes no issues.