[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","root",{"_104":105,"_106":107},"routes/embed.x.$handle.$name.$",{"_9":10,"_11":12,"_13":14,"_15":16,"_17":18,"_19":20,"_21":-5},"handle","samuelfiais","name","math-expression-solver","path","solver.ts","project",{"_22":45,"_11":12,"_33":46,"_47":-5,"_48":42,"_49":50,"_51":50,"_52":53,"_54":-5,"_55":56,"_57":58,"_59":32,"_60":-5,"_61":-5,"_62":63,"_64":65,"_66":-5,"_67":-5,"_68":-5,"_69":-5,"_70":71,"_72":71,"_73":74,"_75":74,"_76":74,"_77":71,"_78":71,"_79":80,"_81":82,"_83":84,"_85":42},"file",{"_22":23,"_11":14,"_24":25,"_26":-5,"_27":28,"_29":30,"_31":32,"_33":34,"_35":36,"_37":38,"_39":40,"_41":42,"_43":-5,"_13":44},"permalink","https://www.val.town/x/samuelfiais/math-expression-solver/code/solver.ts","extension","id","a2773dbd-1fbd-414a-9d2a-6b47f2809cb3","fileId","2f047772-9c44-11f1-b8f1-1607ee4eb77e","parentId","branchId","1a188d9b-a4fd-45a4-bdc9-be224fdc4125","branchVersion",18,"latest",true,"createdAt",["D",1787195502311],"version",6,"fileType","http","content","// Math expression solver — live page + JSON API.\n// Try: 2 + 3 * 4, (10 - 4) / 3, 2^8, or sqrt(16) + 5\n\n// Tiny, safe arithmetic parser (no eval).\nfunction solveExpression(expr: string): number {\n const tokens = expr.replace(/\\s+/g, \"\").match(/\\d*\\.?\\d+|sqrt|[()+\\-*/^]/g) ?? [];\n\n let pos = 0;\n const peek = () => tokens[pos];\n const next = () => tokens[pos++];\n\n function parseExpr(): number {\n let value = parseTerm();\n while (peek() === \"+\" || peek() === \"-\") {\n const op = next();\n const rhs = parseTerm();\n value = op === \"+\" ? value + rhs : value - rhs;\n }\n return value;\n }\n\n function parseTerm(): number {\n let value = parsePower();\n while (peek() === \"*\" || peek() === \"/\") {\n const op = next();\n const rhs = parsePower();\n value = op === \"*\" ? value * rhs : value / rhs;\n }\n return value;\n }\n\n function parsePower(): number {\n const base = parseUnary();\n if (peek() === \"^\") {\n next(); // consume '^'\n return Math.pow(base, parsePower());\n }\n return base;\n }\n\n function parseUnary(): number {\n if (peek() === \"-\") {\n next();\n return -parseUnary();\n }\n return parseAtom();\n }\n\n function parseAtom(): number {\n const t = next();\n if (t === \"(\") {\n const v = parseExpr();\n expect(\")\");\n return v;\n }\n if (t === \"sqrt\") {\n expect(\"(\");\n const v = parseExpr();\n expect(\")\");\n return Math.sqrt(v);\n }\n const n = parseFloat(t);\n if (Number.isNaN(n)) throw new Error(\"invalid token: \" + t);\n return n;\n }\n\n function expect(tok: string): void {\n if (next() !== tok) throw new Error(\"expected \" + tok);\n }\n\n return parseExpr();\n}\n\nconst PAGE = `\n\n \n \n \n Math Expression Solver\n \n \n \n

🧮 Calculadora

\n \n

\n \n \n \n \n\n \n \n \n \n\n \n \n \n \n\n \n \n \n \n\n \n \n \n \n

\n \n

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