using await on global scope without async keyword

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猫巷女王i
猫巷女王i 2020-12-11 02:46

I am trying to do something like this on global scope in nodejs REPL. As per my understanding both the following statements are valid. see docs



        
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  •  刺人心
    刺人心 (楼主)
    2020-12-11 03:25

    await can only be used within a function that is labeled async, so there are two ways you can approach this.

    Note: There is a proposal in place that may eventually allow the usage of Top level await calls.

    The first way is to create a self invoked function like this:

    (async function() {
      let x = await Promise.resolve(2)
      let y = await 2
      
      console.log(x, y)
    })()

    Or the second way is to use .then()

    Promise.resolve(2).then(async data => {
      let x = data
      let y = await 2
    
      console.log(x, y)
    })

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