feat(codemode): complete regexp and math parity (#37955)

packages/codemode/src/stdlib/math.ts

@@ -1,3 +1,13 @@
+import { type AstNode, InterpreterRuntimeError } from "../interpreter/model.js"
+import { spreadItems } from "./collections.js"
+
+// Bun exposes ES2026 Math.sumPrecise before TypeScript's standard library types.
+declare global {
+  interface Math {
+    sumPrecise(values: Iterable<number>): number
+  }
+}
+
 export const mathConstants = new Set(["PI", "E", "LN2", "LN10", "LOG2E", "LOG10E", "SQRT2", "SQRT1_2"])
 
 export const mathMethods = new Set([
@@ -37,11 +47,23 @@ export const mathMethods = new Set([
   "fround",
   "clz32",
   "imul",
+  "sumPrecise",
 ])
 
 export const invokeMathMethod = (name: string, args: Array<unknown>, node: AstNode): number => {
   if (!mathMethods.has(name)) throw new InterpreterRuntimeError(`Math.${name} is not available in CodeMode.`, node)
   if (name === "random") return Math.random()
+  if (name === "sumPrecise") {
+    const items = spreadItems(args[0])
+    if (items === undefined) {
+      throw new InterpreterRuntimeError("Math.sumPrecise expects an iterable collection.", node).as("TypeError")
+    }
+    const numbers = Array.from(items)
+    if (!numbers.every((item): item is number => typeof item === "number")) {
+      throw new InterpreterRuntimeError("Math.sumPrecise expects an iterable of numbers.", node).as("TypeError")
+    }
+    return Math.sumPrecise(numbers)
+  }
   // Validate only the arguments the method consumes; like JS, extras are ignored
   // (so built-ins work as callbacks receiving (element, index, array)).
   const num = (index: number): number => {
@@ -131,4 +153,3 @@ export const invokeMathMethod = (name: string, args: Array<unknown>, node: AstNo
   }
   throw new InterpreterRuntimeError(`Math.${name} is not available in CodeMode.`, node)
 }
-import { type AstNode, InterpreterRuntimeError } from "../interpreter/model.js"