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No Top Level Await

lint/rules/no-top-level-await.md

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Disallows the use of top level await expressions.

Top level await cannot be used when distributing CommonJS/UMD via dnt.

Invalid:

typescript
await foo();
for await (item of items) {}

Valid:

typescript
async function foo() {
  await task();
}
async function foo() {
  for await (item of items) {}
}