iife and crockford-iife functions break

Examples:

// iife
(async () => {

  await test()

})()

// crockford-iife
(async () => {

  await test()

}())

[fundon]

Thank you for your explain.

[leebyron]

That error is expected given that code (though node could be more helpful with its errors).

You can test this by trying the same thing using node without the async/await (not using this library at all):

const test = {
  run () {
  }
}

(() => {
  test.run()
})()

iife.js:6
(() => {
^

TypeError: (intermediate value) is not a function

This is because of Automatic Semicolon Insertion (a good resource: https://github.com/getify/You-Dont-Know-JS/blob/master/types %26 grammar/ch5.md#automatic-semicolons)

This is because any expression followed by () assumes that you mean the previous expression is a function to be called. In this case: const test = {run(){}}(()=>{test.run()}) JavaScript thinks test will be assigned the result of a function call where {run(){}} is the “intermediate value” function to call and ()=>{test.run()} is the argument to the function.

Check out https://astexplorer.net/#/efPw48Ufoh to see how JavaScript parses this.

The fix is to ensure there’s a semicolon somewhere before your IIFE.