fix(runtime::to_value): numbers are always NixFloat

.envrc

@@ -1 +1,2 @@
 use flake
+dotenv

nix-js/src/context.rs

@@ -1,6 +1,7 @@
 use std::ptr::NonNull;
 
 use hashbrown::HashMap;
+use itertools::Itertools as _;
 use string_interner::DefaultStringInterner;
 
 use crate::codegen::{CodegenContext, Compile};
@@ -15,7 +16,7 @@ mod downgrade;
 pub struct Context {
     irs: Vec<Ir>,
     symbols: DefaultStringInterner,
-    global: NonNull<HashMap<crate::ir::SymId, ExprId>>,
+    global: NonNull<HashMap<SymId, ExprId>>,
 }
 
 impl Drop for Context {
@@ -99,14 +100,7 @@ impl Context {
     pub fn eval(&mut self, expr: &str) -> Result<Value> {
         let root = rnix::Root::parse(expr);
         if !root.errors().is_empty() {
-            return Err(Error::parse_error(root.errors().iter().fold(
-                String::new(),
-                |mut acc, err| {
-                    acc.push_str(&err.to_string());
-                    acc.push_str("; ");
-                    acc
-                },
-            )));
+            return Err(Error::parse_error(root.errors().iter().join("; ")));
         }
         let root = self
             .downgrade_ctx()
@@ -331,11 +325,9 @@ mod test {
 
     #[test]
     fn test_builtin_function_map() {
-        // Test higher-order builtin: builtins.map (x: x * 2) [1 2 3]
+        // Test higher-order builtin: map (x: x * 2) [1 2 3]
         assert_eq!(
-            Context::new()
-                .eval("builtins.map (x: x * 2) [1 2 3]")
-                .unwrap(),
+            Context::new().eval("map (x: x * 2) [1 2 3]").unwrap(),
             Value::List(List::new(vec![
                 Value::Const(Const::Int(2)),
                 Value::Const(Const::Int(4)),
@@ -628,6 +620,10 @@ mod test {
             ctx.eval("builtins.typeOf 3.14").unwrap(),
             Value::String("float".to_string())
         );
+
+        // literal tests
+        assert_eq!(ctx.eval("1").unwrap(), Value::Const(Const::Int(1)));
+        assert_eq!(ctx.eval("1.").unwrap(), Value::Const(Const::Float(1.)))
     }
 
     #[test]

nix-js/src/runtime.rs

@@ -146,17 +146,9 @@ fn to_value<'a, 'b>(val: v8::Local<'a, v8::Value>, ctx: &RuntimeContext<'a, 'b>)
         }
         _ if val.is_number() => {
             let val = val.to_number(scope).unwrap().value();
-            // Heuristic: convert whole numbers to Int (for backward compatibility and JS interop)
-            if val.is_finite()
-                && val.fract() == 0.0
-                && val >= i64::MIN as f64
-                && val <= i64::MAX as f64
-            {
-                Value::Const(Const::Int(val as i64))
-            } else {
+            // number is always NixFloat
             Value::Const(Const::Float(val))
         }
-        }
         _ if val.is_true() => Value::Const(Const::Bool(true)),
         _ if val.is_false() => Value::Const(Const::Bool(false)),
         _ if val.is_null() => Value::Const(Const::Null),
@@ -280,13 +272,13 @@ fn primop_app_name<'a, 'b>(
 fn to_value_working() {
     assert_eq!(
         run("({
-              test: [1, 9223372036854775807n, true, false, 'hello world!']
+              test: [1., 9223372036854775807n, true, false, 'hello world!']
             })")
         .unwrap(),
         Value::AttrSet(AttrSet::new(std::collections::BTreeMap::from([(
             Symbol::from("test"),
             Value::List(List::new(vec![
-                Value::Const(Const::Int(1)),
+                Value::Const(Const::Float(1.)),
                 Value::Const(Const::Int(9223372036854775807)),
                 Value::Const(Const::Bool(true)),
                 Value::Const(Const::Bool(false)),