When deno running typescript, SuppressedError output does not obey spec

[loynoir]

BUG

When deno running typescript, SuppressedError output does not obey spec

version

node v21.7.1

typescript 5.4.4

---

deno 1.42.1 (release, x86_64-unknown-linux-gnu)

v8 12.3.219.9

typescript 5.4.3

reproduce

src/reproduce.mts

import { deepStrictEqual } from 'node:assert'
import process from 'node:process'

let err: any
try {
  await using _x1 = {
    async [Symbol.asyncDispose]() {
      throw 1
    }
  }

  await using _x2 = {
    async [Symbol.asyncDispose]() {
      throw 2
    }
  }

  await using _x3 = {
    async [Symbol.asyncDispose]() {
      throw 3
    }
  }

  await using _x4 = {
    async [Symbol.asyncDispose]() {
      throw 4
    }
  }

  throw 5
} catch (e) {
  err = e
}

if (process.env['ACCEPT_BUG'] === undefined) {
  deepStrictEqual(err.error, 1)
  deepStrictEqual(err.suppressed.error, 2)
  deepStrictEqual(err.suppressed.suppressed.error, 3)
  deepStrictEqual(err.suppressed.suppressed.suppressed.error, 4)
  deepStrictEqual(err.suppressed.suppressed.suppressed.suppressed, 5)
} else {
  deepStrictEqual(err.suppressed, 1)
  deepStrictEqual(err.error.suppressed, 2)
  deepStrictEqual(err.error.error.suppressed, 3)
  deepStrictEqual(err.error.error.error.suppressed, 4)
  deepStrictEqual(err.error.error.error.error, 5)
}

actual

$ yarn tsc --build && yarn node ./src/reproduce.mjs && deno run -A ./src/reproduce.mjs  && ACCEPT_BUG=1 deno run -A ./src/reproduce.mts && echo OK
OK

expected

$ yarn tsc --build && yarn node ./src/reproduce.mjs && deno run -A ./src/reproduce.mjs  && deno run -A ./src/reproduce.mts && echo OK
OK

additional

https://github.com/tc39/proposal-explicit-resource-management?tab=readme-ov-file#the-suppressederror-error

e.suppressed.suppressed.suppressed

[petamoriken]

In Deno there is no SuppressedError yet because the using syntax is now performed by transpiling TypeScript

[loynoir]

In Deno there is no SuppressedError yet because the using syntax is now performed by transpiling TypeScript

I mean, whatever the name is, the result transpiled by tsc, and the result transpiled by deno, are different.

tsc result of using error

  deepStrictEqual(err.error, 1)
  deepStrictEqual(err.suppressed.error, 2)
  deepStrictEqual(err.suppressed.suppressed.error, 3)
  deepStrictEqual(err.suppressed.suppressed.suppressed.error, 4)
  deepStrictEqual(err.suppressed.suppressed.suppressed.suppressed, 5)

deno result of using error

  deepStrictEqual(err.suppressed, 1)
  deepStrictEqual(err.error.suppressed, 2)
  deepStrictEqual(err.error.error.suppressed, 3)
  deepStrictEqual(err.error.error.error.suppressed, 4)
  deepStrictEqual(err.error.error.error.error, 5)

If two names swapped in deno, it should be same result with tsc.

Seems like a mistake.

[petamoriken]

maybe related: #23187