quick-lint-js

Find bugs in JavaScript programs.

E0069: cannot declare 'await' inside async function

In non-strict mode, a variable can be named await. In strict mode and inside async functions, it is a syntax error to use await as a variable name:

async function main() {
  const
  await fs.promises.writeFile(
    pidFile,
    process.pid,
  );
}

async function getCookedPizza(await) {
  visitOven();
  openOven();
  if (await) {
    await waitForPizza();
  }
  let pizza = takePizza();
  closeOven();
  return pizza;
}

To fix this error, complete the variable declaration preceeding await:

async function main() {
  const pidFile = "./myapp.pid";
  await fs.promises.writeFile(
    pidFile,
    process.pid,
  );
}

Alternatively, rename the variable to something other than await:

async function getCookedPizza(wait) {
  visitOven();
  openOven();
  if (wait) {
    await waitForPizza();
  }
  let pizza = takePizza();
  closeOven();
  return pizza;
}

Documentation for other errors