top level await

[Tobbe]

I can't get top-level await to work with esrun.

This is my tsconfig file

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "display": "Node 16 + ESM + Strictest",
  "compilerOptions": {
    "lib": ["es2021"],
    "module": "esnext",
    "target": "es2021",
    "moduleResolution": "node",
    "esModuleInterop": true,
    "strict": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "allowUnusedLabels": false,
    "allowUnreachableCode": false,
    "exactOptionalPropertyTypes": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "importsNotUsedAsValues": "error",
    "checkJs": true
  }
}

It works fine if I do just npx tsc. But If I do npx @digitak/esrun myfile.ts I get myfile.ts:23:19: error: Top-level await is not available in the configured target environment ("es2021").

How can I use top-level await with esrun?

[Gin-Quin]

You need to set "target": "esnext"

[Tobbe]

Awesome! That works. Thank you 🙂

Why doesn't tsc also need it to be "esnext"?

[Gin-Quin]

I don't know 😄 It's actually EsBuild that enforces the use of esnext over es2021. Maybe it should work with es2021 like tsc does, in that case it's a EsBuild bug.

[Tobbe]

Alright 🙂 Thanks for getting back to me!