Issues with "Array.prototype.reduce" and "Array.prototype.reduceRight"

[fpelliccioni]

At 22.1.3.19 Array.prototype.reduce ( callbackfn [ , initialValue ] )

callbackfn should be a function that takes four arguments. reduce calls the callback, as a function, once for each element present in the array, in ascending order.

The callback function is called N - 1 times, where N is the number of elements in the array (when initialValue is not present).

Same error at 22.1.3.20 Array.prototype.reduceRight ( callbackfn [ , initialValue ] )

callbackfn should be a function that takes four arguments. reduceRight calls the callback, as a function, once for each element present in the array, in descending order.

[getify]

The algorithm (below this text) is accurate. This text (slightly misleading in that it's incomplete) is only in the Note 1, which is only informal (aka non-normative) human description.

[littledan]

@fpelliccioni Nice catch! It'd be a great next step if you want to write a pull request against the spec (in spec.html of this repository) with fixed non-normative text. I really appreciate your help; in my opinion, the non-normative text is a really important part for users and implementers to be able to understand the spec.