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JavaScript one-liner puzzle: throw an error without using throw

Jan Küster on February 18, 2022

Write a function that throws an error. Contstraints: do not use throw one line only simply returning an Error is not sufficient (since it's not ...
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thormeier profile image
Pascal Thormeier •

Uuh, love me some code golf!

Shortest implementation of any error I could think of would be something like this:

let e=_=>_._
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12 characters.

And then using it like so:

try {
  e()
} catch (err) {
  console.warn('error thrown', err)
}
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Throws Cannot read properties of undefined (reading '_'), though there's no error if the function receives an object as argument with _ defined.

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Jan Küster •

Without depending on the input but more lines

Spoiler 
const f=()=>f=0
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