Getting nestia SDK/swagger to work with ESM?

[li-dennis]

Question

I'm playing around with nestia, and really like it so far, it looks like it'll solve a lot of our pain points around using DTOs and generating a client API. I'm trying to get the SDK to play nice with ESM, but I seem to be running into issues around import() and require(). Is it ESM compatible?

My tsconfig uses

{
    "compilerOptions": {
        "module": "ES2022",
        "target": "ES2020",
        "moduleResolution": "node",
...
}

$ npx nestia sdk "src/**/*.controller.ts" --out ./nestia_api
-----------------------------------------------------------
 Nestia SDK Generator
-----------------------------------------------------------
Analyzing reflections
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Error on ".../src/agents/agents.controller.ts" file. Check your code.
Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: .../src/agents/agents.controller.ts
require() of ES modules is not supported.
require() of .../src/agents/agents.controller.ts from .../node_modules/@nestia/sdk/lib/analyses/ReflectAnalyzer.js is an ES module file as it is a .ts file whose nearest parent package.json contains "type": "module" which defines all .ts files in that package scope as ES modules.
Instead change the requiring code to use import(), or remove "type": "module" from .../package.json.

    at createErrRequireEsm (.../node_modules/ts-node/dist-raw/node-internal-errors.js:46:15)
    at assertScriptCanLoadAsCJSImpl (.../node_modules/ts-node/dist-raw/node-internal-modules-cjs-loader.js:584:11)
    at Object.require.extensions.<computed> [as .ts] (.../node_modules/ts-node/src/index.ts:1610:5)
    at Module.load (node:internal/modules/cjs/loader:1117:32)
    at Function.Module._load (node:internal/modules/cjs/loader:958:12)
    at Module.require (node:internal/modules/cjs/loader:1141:19)
    at require (node:internal/modules/cjs/helpers:110:18)
    at .../node_modules/@nestia/sdk/src/analyses/ReflectAnalyzer.ts:22:41 {
  code: 'ERR_REQUIRE_ESM'
}

[acchou]

This might be fixed by changing "module" to "node16" in tsconfig.json. See nightwatchjs/nightwatch#3858 (review)

[samchon]

Use CommonJS. No way to support ESM, especially when below feature comes

microsoft/TypeScript#54276