refactor(codemode): split interpreter and stdlib (#35572)

packages/codemode/src/stdlib/number.ts

@@ -0,0 +1,66 @@
+export const numberMethods = new Set(["toFixed", "toPrecision", "toExponential", "toString"])
+
+export const numberConstants = new Set(["MAX_SAFE_INTEGER", "MIN_SAFE_INTEGER", "MAX_VALUE", "MIN_VALUE", "EPSILON"])
+
+export const numberStatics = new Set(["isInteger", "isFinite", "isNaN", "isSafeInteger", "parseInt", "parseFloat"])
+
+export const invokeNumberMethod = (value: number, name: string, args: Array<unknown>, node: AstNode): unknown => {
+  const optNum = (index: number): number | undefined => {
+    const arg = args[index]
+    if (arg === undefined) return undefined
+    if (typeof arg !== "number") throw new InterpreterRuntimeError(`Number.${name} expects a number argument.`, node)
+    return arg
+  }
+  let result: unknown
+  switch (name) {
+    case "toFixed":
+      result = value.toFixed(optNum(0))
+      break
+    case "toExponential":
+      result = value.toExponential(optNum(0))
+      break
+    case "toPrecision": {
+      const digits = optNum(0)
+      result = digits === undefined ? value.toString() : value.toPrecision(digits)
+      break
+    }
+    case "toString": {
+      const radix = optNum(0)
+      if (radix !== undefined && (radix < 2 || radix > 36)) {
+        throw new InterpreterRuntimeError("Number.toString radix must be between 2 and 36.", node)
+      }
+      result = value.toString(radix)
+      break
+    }
+    default:
+      throw new InterpreterRuntimeError(`Number method '${name}' is not available in CodeMode.`, node)
+  }
+  return boundedData(result, `Number.${name} result`)
+}
+
+export const invokeNumberStatic = (name: string, args: Array<unknown>, node: AstNode): unknown => {
+  const value = args[0]
+  switch (name) {
+    case "isInteger":
+      return Number.isInteger(value)
+    case "isFinite":
+      return Number.isFinite(value)
+    case "isNaN":
+      return Number.isNaN(value)
+    case "isSafeInteger":
+      return Number.isSafeInteger(value)
+    case "parseInt": {
+      const radix = args[1]
+      if (radix !== undefined && typeof radix !== "number") {
+        throw new InterpreterRuntimeError("Number.parseInt expects a numeric radix.", node)
+      }
+      return parseInt(coerceToString(value), radix)
+    }
+    case "parseFloat":
+      return parseFloat(coerceToString(value))
+    default:
+      throw new InterpreterRuntimeError(`Number.${name} is not available in CodeMode.`, node)
+  }
+}
+import { type AstNode, InterpreterRuntimeError } from "../interpreter/model.js"
+import { boundedData, coerceToString } from "./value.js"