Fix LSP crash and tokenizer issue

src/Lib/Tokenizer.newt

@@ -165,7 +165,8 @@ rawTokenise ts@(TS sl sc toks chars) = case chars of
     doChar : Char -> List Char ->  Either Error TState
     doChar c cs = if elem c standalone
       then rawTokenise (TS sl (sc + 1) (toks :< mktok True sl (sc + 1) Symbol (pack $ c :: Nil)) cs)
-      else let kind = if isDigit c then Number else if isUpper c then UIdent else Ident in
+      else if isDigit c then doRest (TS sl sc toks (c :: cs)) Number isDigit Lin
+      else let kind = if isUpper c then UIdent else Ident in
         doRest (TS sl sc toks (c :: cs)) kind isIdent Lin
 
 

src/Prelude.newt

@@ -456,8 +456,7 @@ debugLog a = putStrLn (debugStr a)
 
 pfunc stringToInt : String → Int := `(s) => {
   let rval = Number(s)
-  if (isNaN(rval)) throw new Error(s + " is NaN")
-  return rval
+  return isNaN(rval) ? 0 : rval
 }`
 
 class Foldable (m : U → U) where

tests/Number.newt

@@ -0,0 +1,9 @@
+module Number
+
+import Prelude
+
+add : Int → Int → Int
+add a b = a + b
+
+main : IO Unit
+main = printLn $ add 2$ 40

tests/Number.newt.golden

@@ -0,0 +1 @@
+42