import { Type as t } from "@sinclair/typebox";
import { toFormElems } from "formtype"

const schema = t.Object({
  name: t.String({ minLength: 3, maxLength: 30 }),
  password: t.String({ minLength: 8, maxLength: 128, format: "password" })
})

const formElems = toFormElems(schema) /* {
  name: "<input type=\"text\" name=\"name\" id=\"name\" minlength=\"3\" maxlength=\"30\" required=\"true\"></input>",
  password: "<input type=\"password\" name=\"password\" id=\"password\" minlength=\"8\" maxlength=\"128\" required=\"true\"></input>"
} */

Complex Example

import { Type as t } from "@sinclair/typebox";
import { toFormElems } from "formtype"

const signUpFormValidator = t.Object({
  username: t.String({ minLength: 5, maxLength: 35, placeholder: "Create a unique username" }),
  age: t.Optional(t.Integer({ placeholder: "Enter your age (Optional)" })),
  password: t.String({
    format: "password", minLength: 8, maxLength: 128, placeholder: "Create a unique password",
    pattern: "^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])(?=.*?[#?!@$%^&*-]).*$",
    title: "Password must contain at least: one special character, one number, one lowercase letter, and one uppercase letter.",
  }),
  confirmPassword: t.String({
    format: "password", minLength: 8, maxLength: 128, placeholder: "Confirm your unique password",
    pattern: "^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])(?=.*?[#?!@$%^&*-]).*$",
    title: "Password must contain at least: one special character, one number, one lowercase letter, and one uppercase letter.",
  }),
  csrfToken: t.Readonly(t.String({ default: "no csrf token provided", hidden: true }))
})

const formElems = toFormElems(signUpFormValidator)

const html = `
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>LMFAOOOO</title>
  </head>
  <style>
    #signUpForm {
      display: flex;
      flex-direction: column;
      background-color: gray;
      gap: 11px;
      padding: 25px;
      width: 600px;
      position: absolute;
      left: 50%;
      transform: translate(-50%, 80px);
    }
    input {
      border: 0px;
      outline 0px;
      padding: 15px;
      font-size: 16px;
      border-radius: 8px;
      &::placeholder { color: #525252; }
    }
  </style>
  <body>
    <form id="signUpForm" name="signUpForm" action="/test" method="post">
      ${Object.values(formElems).join("\n")}
      <input type="submit" value="Sign Up"></input>
    </form>
  </body>
</html>
`

Bun.serve({
  fetch(req) {
    return new Response(html, { headers: { "content-type": "text/html" } })
  }
})

FAQs

What is formtype?

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Package last updated on 06 Dec 2023

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