TITO•4w ago

Unexpected Const Error

When running a typescript (bun) step I receive this error: 534 | const settled = results error: Unexpected const at input.tsx:534:3 Running it locally with bun run works fine. Only the deployed code errors out. Any ideas what could be causing this?

2 Replies

fr3fou•4w ago

can you show the full code?

TITOOP•2w ago

This is solved. Probably caused by a bun version update, but this code caused transpiling errors:

const separateResults = <T>(items: PromiseSettledResult<T>[]) => {
  const successfulItems = items
    .filter(
      (item): item is PromiseFulfilledResult<T> => item.status === "successful"
    )
    .map((item) => item.value);

  const failedItems = items.filter(
    (item): item is PromiseRejectedResult => item.status === "failed"
  );

  ...
};

const separateResults = <T>(items: PromiseSettledResult<T>[]) => {
  const successfulItems = items
    .filter(
      (item): item is PromiseFulfilledResult<T> => item.status === "successful"
    )
    .map((item) => item.value);

  const failedItems = items.filter(
    (item): item is PromiseRejectedResult => item.status === "failed"
  );

  ...
};

Removing type assertions fixed it

const separateResults = (items: PromiseSettledResult<unknown>[]) => {
  const successfulItems: unknown[] = [];
  const failedItems: unknown[] = [];

  for (const item of items) {
    if (item.status === "successful") {
      successfulItems.push(item.value);
    } else if (item.status === "failed") {
      failedItems.push(item.reason);
    }
  }

  ...
};

const separateResults = (items: PromiseSettledResult<unknown>[]) => {
  const successfulItems: unknown[] = [];
  const failedItems: unknown[] = [];

  for (const item of items) {
    if (item.status === "successful") {
      successfulItems.push(item.value);
    } else if (item.status === "failed") {
      failedItems.push(item.reason);
    }
  }

  ...
};

Unexpected Const Error

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