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    0.13.0 • Public • Published


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    Customizable React signup component in Typescript that validates with a built-in or custom Yup schema. It accepts custom fields, header/footer and social sign up buttons.

    signup component


    npm install @unleashit/signup

    Required peer dependencies: react, formik and yup.


    class SignupDemo extends React.Component {
      async signupHandler(values) {
        // should return a Promise in the shape of SignupHandlerResponse below
        return await fetch('', {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json',
          body: JSON.stringify(values),
        }).then((resp) => resp.json());
      onSuccess(resp) {
        // set auth state, redirect, etc. resp has full server response from signupHandler().
        window.location.href = '/signed-in';
      render() {
        return <Signup signupHandler={this.signupHandler} onSuccess={this.onSuccess} />;
    export default SignupDemo;

    Social Sign up

    Adding social sign up buttons is easy. Simply include them as children and they will display under the main login with a nice separator. You must supply the buttons themselves, but for something fast and nice I recommend react-social-login-buttons.

    import { GithubLoginButton, TwitterLoginButton } from 'react-social-login-buttons';
    const btnStyle = {
      margin: '10px 0',
      boxShadow: 'none',
    render() {
      return (
          signupHandler={() => Promise.resolve({ success: true })}
          onSuccess={(resp) => alert(JSON.stringify(resp, null, 2))}
          <TwitterLoginButton onClick={() => alert('Hello')} style={btnStyle}>
            Sign up with Twitter
          <GithubLoginButton onClick={() => alert('Hello')} style={btnStyle}>
            Sign up with Github

    Custom Fields

    It's possible to replace the default fields with custom fields and attributes by adding a customFields prop. The signupHandler will be called with their values after passing validation.

    This array of fields will replace the defaults, so don't forget to add email/username, password and password confirmation if you need them. If you create a Yup schema with matching name attributes, it will properly validate.

    Currently input, select, checkbox and textarea fields are supported.

          element: 'input',
          type: 'text',
          name: 'email',
          label: 'Email',
          element: 'input',
          type: 'password',
          name: 'password',
          label: 'Password',
          element: 'input',
          type: 'password',
          name: 'passwordConfirm',
          label: 'Type password again',
          element: 'select',
          name: 'color',
          label: 'Choose a color',
          options: [
            ['', '- select -'],
            ['red', 'red'],
            ['green', 'green'],
            ['blue', 'blue'],
            ['yellow', 'yellow'],
          element: 'input',
          type: 'checkbox',
          name: 'newsletterOptIn',
          label: 'Subscribe to our newsletter?',
          value: 'yes',
          defaultValue: true,
    // yup schema
    const schema = yup.object().shape({
      email: yup.string().email().max(56).required(),
      password: yup.string().min(8).max(512).required(),
      passwordConfirm: yup
        .oneOf([yup.ref('password'), ''], 'Passwords must match')
      color: yup.string().oneOf(['red', 'green', 'blue', 'yellow']).required(),


    Basic namespaced (BEM) css can be imported: import '@unleashit/signup/dist/signup.css'. CSS Module support is baked in. If you use CSS Modules you can import styles from '@unleashit/signup/dist/signup.module.css' or import your own custom module targeting the internal classes and pass to the cssModule prop. Please see CSS in the main readme of the repo for more info.


    // signupHandler() should return this shape:
    interface SignupHandlerResponse {
      success: boolean;
      errors?: {
        // error msg to print in browser when signup fails
        // (typically because the user/email was already registered)
        serverAuth: string;
        // optionally validate anything else on server
        // key is the field's name attr, value is error msg to display
        [key: string]: string;
    // customFields prop should be an array of objects in this shape:
    interface CustomField {
      element: 'input' | 'select' | 'textarea';
      type: string;
      name: string;
      label: string;
      options?: string[][]; // for select element
      defaultChecked?: boolean; // for checkbox
      custAttrs?: { [key: string]: string };


    Name Type Description default
    signupHandler (values: any) => Promise<SignupHandlerResponse> Called on submission and after validation. Use to register user and validate serverside. Should return the above interface required
    onSuccess (resp: SignupHandlerResponse) => any Called if signupHandler returns success. Provides the server response from serverHandler. Use to store auth state, redirect, etc. required
    schema yup.Schema<SignupSchema> Yup schema to override the default standard validation
    header React Component React component to override default header basic header
    loader React Component React component to override default loader Signing up...
    loginUrl string Url for login page. Use only if using default header /login
    customFields CustomField[] Array of custom fields. Replaces defaults (including email/password). Custom validation schema will be needed. n/a
    orLine boolean Display a "nice" line rule above social signup buttons true (note: requires children)
    cssModule { [key: string]: string } CSS Module object that optionally replaces default. Class names need to match expected names. undefined
    children React Children Use for Social signup buttons or anything else (displays as footer) n/a


    npm i @unleashit/signup

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    • unleashit