ESM Build start : [ERROR] Top-level await is not available in the configured target environment ("es2017")

[Bakann]

Hello everyone,

I've just cloned this repo and followed the instruction, but I get this error below when building the project. I've changed the target to es2020 but I got the same error :

➜ langchain-ts-starter git:(main) ✗ npx turbo run build lint format • Running build, lint, format • Remote caching disabled lint: Skipping cache check for //#lint, outputs have not changed since previous run. lint: cache hit, replaying output ba1d93610b79d22b format: Skipping cache check for //#format, outputs have not changed since previous run. format: cache hit, replaying output b62b0263feb4282c build: cache miss, executing c0464e17a9d1b044 lint: lint: > langchain-ts-starter@1.0.0 lint lint: > eslint src lint: format: format: > langchain-ts-starter@1.0.0 format format: > prettier --write "*/.ts" format: format: dist/index.d.ts 278ms format: src/index.ts 34ms build: build: > langchain-ts-starter@1.0.0 build build: > tsup build: build: CLI Building entry: src/index.ts build: CLI Using tsconfig: tsconfig.json build: CLI tsup v6.7.0 build: CLI Using tsup config: /Users/bakanndy/may/langchain-ts-starter/tsup.config.js build: CLI Target: es2017 build: CLI Cleaning output folder build: CJS Build start build: ESM Build start build: ✘ [ERROR] Top-level await is not available in the configured target environment ("es2017") build: build: src/index.ts:11:12: build: 11 │ const res = await model.call( build: ╵ ~ build: build: ✘ [ERROR] Top-level await is not available in the configured target environment ("es2017") build: build: src/index.ts:11:12: build: 11 │ const res = await model.call( build: ╵ ~ build: build: CJS Build failed build: Error: Build failed with 1 error: build: src/index.ts:11:12: ERROR: Top-level await is not available in the configured target environment ("es2017") build: at failureErrorWithLog (/Users/bakanndy/may/langchain-ts-starter/node_modules/esbuild/lib/main.js:1636:15) build: at /Users/bakanndy/may/langchain-ts-starter/node_modules/esbuild/lib/main.js:1048:25 build: at runOnEndCallbacks (/Users/bakanndy/may/langchain-ts-starter/node_modules/esbuild/lib/main.js:1471:45) build: at buildResponseToResult (/Users/bakanndy/may/langchain-ts-starter/node_modules/esbuild/lib/main.js:1046:7) build: at /Users/bakanndy/may/langchain-ts-starter/node_modules/esbuild/lib/main.js:1075:16 build: at responseCallbacks. (/Users/bakanndy/may/langchain-ts-starter/node_modules/esbuild/lib/main.js:697:9) build: at handleIncomingPacket (/Users/bakanndy/may/langchain-ts-starter/node_modules/esbuild/lib/main.js:752:9) build: at Socket.readFromStdout (/Users/bakanndy/may/langchain-ts-starter/node_modules/esbuild/lib/main.js:673:7) build: at Socket.emit (node:events:390:28) build: at addChunk (node:internal/streams/readable:315:12) build: ESM Build failed build: DTS Build start build: DTS ⚡️ Build success in 2160ms build: DTS dist/index.d.ts 12.00 B build: ERROR: command finished with error: command (/Users/bakanndy/may/langchain-ts-starter) npm run build exited (1) command (/Users/bakanndy/may/langchain-ts-starter) npm run build exited (1)

Tasks: 2 successful, 3 total Cached: 2 cached, 3 total Time: 3.551s Failed: //#build

ERROR run failed: command exited (1) ➜ langchain-ts-starter git:(main) ✗

[mike-manko]

I have the same issue

[mindell]

I just finished fixing the same issue as this. This is what I did.

(async() => {
 await my_top_level_await_problem();
})();

[ochsec]

Alternatively you could target ES2022 in the tsconfig.json: "target": "ES2022"

and remove "cjs" import format in tsup.config.js: format: ["esm"]

but for the repo, it would probably be better if the example was rewritten to use an IIFE wrapping an async function as above, since you'd lose some of the user base on older node versions.

[Maxservais]

Also faced the same issue and @ochsec workaround did the trick, thanks!

[qq5050595531]

I fixed it.

(async() => {
  const res = await model.call(
    "What's a good idea for an application to build with GPT-3?"
  );
  console.log("what is it?",res);
 })();