Module:utilities/scribunto parameter key/documentation

Takes a parameter name as an input, and returns the Scribunto-normalized form (i.e. the key that that parameter would have in a frame.args table). For example, "1" is normalized to 1 (a number), and " foo " is normalized to "foo". If the input is not a string, it is returned unchanged.

Strings are trimmed with Module:string/php trim, and then converted to numbers if:

1. They are integers, with no decimals (2.0) or leading zeroes (02).
2. They are ≤ 2⁵³ and ≥ -2⁵³.
3. For positive values, they do not have a leading + sign.

Note: Lua integers are only accurate to 2⁵³ - 1, so 2⁵³ and -2⁵³ have to be specifically checked for, since 2^53 == 2^53 + 1 evaluates to true.