Function JSStringCreateWithCharacters 

pub unsafe extern "C-unwind" fn JSStringCreateWithCharacters(
    chars: *const JSChar,
    num_chars: usize,
) -> JSStringRef

Available on crate features JSBase and JSStringRef only.

Creates a JavaScript string from a buffer of Unicode characters.

Parameter chars: The buffer of Unicode characters to copy into the new JSString.

Parameter numChars: The number of characters to copy from the buffer pointed to by chars.

Returns: A JSString containing chars. Ownership follows the Create Rule.

Safety

chars must be a valid pointer.