import { type } from "arktype" // Define your type... export const pkg = type({ name: "string", version: "semver", "contributors?": "1<email[]<=10" // 文字列でvalidation書く }) // Infer it... export type Package = typeof pkg.infer // Get validated data or clear, customizable error messages. export const { data, problems } = pkg({ name: "arktype", version: "1.0.0-alpha", contributors: ["david@arktype.io"] }) // "contributors must be more than 1 items long (was 1)" console.log(problems?.summary ?? data)

export const validationSyntax = type({ keywords: "email|uuid|creditCard|integer", // and many more builtinParsers: "parsedDate", // parses a Date from a string nativeRegexLiteral: /@arktype\.io/, embeddedRegexLiteral: "email&/@arktype\\.io/", divisibility: "number%10", // a multiple of 10 bound: "alpha>10", // an alpha-only string with more than 10 characters range: "1<=email[]<99", // a list of 1 to 99 emails narrows: ["number", "=>", (n) => n % 2 === 1], // an odd integer morphs: ["string", "|>", parseFloat] // validates a string input then parses it to a number })