nf seems to have wrong prototypes

[IronBlood]

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• Core/Environment/Rendering
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p5.js version

main branch

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Steps to reproduce this

This is generally a report about the documentation and test cases.

From the reference, the prototypes for nf are:

• nf(num, [left], [right])
• nf(nums, [left], [right])

However, from the source code, especially in doNf(num, left, right), there isn't check of type left === 'undefined', nor a default value for left, so when calling leftPart = leftPart.padStart(left, '0'), left cannot be undefined.

Also in the test suite of p5.prototype.nf, test cases are missing:

• result = nf(1234), if left is optional
• result = nf([1234, 3.141516, 3.141516e-2], 2) for an array of numbers to format

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[Akhilbisht798]

Hey, I am intrested in this isssue. As you said here.

 However, from the source code, especially in doNf(num, left, right), there isn't check of type left === 'undefined', nor a default value for left, so when calling leftPart = leftPart.padStart(left, '0'), left cannot be undefined

did you meant that left can be undefined because that will make more sense if i am not wrong.

[Akhilbisht798]

I can be wrong in this but i think
p5._validateParameters('nf', arguments);
Here the arguments are being checked so that they are always correct or something of that sort.
But for test cases i think you are right we should have a test for array and test for only right argument.