What is the Operator Precedence of Await?

Question

In Javascript certain operators are processed before others:

1 + 2 * 3
// 1 + (2 * 3)
// 7 because * has higher precedence than +

1 === 0 + 1
// 1 === (0 +          


        

Answer 1

An AwaitExpression is an UnaryExpression and has the same precedence as delete, void, typeof, +, -, ~, and !, binding stronger than any binary operator.

This is unlike yield which has a precedence lower than anything else except the comma operator. This design decision was made because both yield a+b and await a + await b are scenarios thought to be more common than (yield a) + (yield b) and await (a + b).