Wrong parameter types for timestampFromIsoTime in message parser

[7vignesh]

The timestampFromIsoTime function in utils.ts expects parameters like year, month, etc. as string[], but the grammar always passes them as plain strings. This type mismatch could cause confusion or bugs. Please update the parameter types to string instead of string[].

Actual behavior:

• Function signature uses string[] for parameters.
• Called with plain string values.

Expected behavior:

• Function should use string for all parameters to match how it’s called.

[amitpamnani205]

Hi! I'd like to work on this issue if it's still available.