Repository: freeCodeCamp/freeCodeCamp
File: client/src/components/formHelpers/form-fields.tsx (TypeScript)

Code before:
    value: string,
    error: unknown,
    isURL: boolean,
    name: string
  ) => {
    let validationError: string | undefined;
    if (value && isURL) {
      try {
        normalizeUrl(value, { stripWWW: false });
      } catch (err: unknown) {
        validationError = (err as { message?: string })?.message;
      }
    }

    const validators = [fCCValidator, httpValidator];
    const isSolutionLink = name !== 'githubLink';
    if (isSolutionLink && !isEditorLinkAllowed) {
      validators.push(editorValidator);
      if (isLocalLinkAllowed) {
        validators.push(pathValidator);
      }
    }
    if (isSourceCodeLinkRequired && name === 'githubLink') {
      validators.push(sourceCodeLinkExistsValidator);
    }
    if (!isLocalLinkAllowed || name === 'githubLink') {
      validators.push(localhostValidator);
    }
    const validationWarning = composeValidators(...validators)(value);
    const message: string = (error ||
      validationError ||
      validationWarning) as string;
    return message ? (
      <HelpBlock>
        <Alert variant={error || validationError ? 'danger' : 'info'}>
          {message}
        </Alert>
      </HelpBlock>
    ) : null;
  };
  return (
    <>
      {formFields
        .filter(formField => !ignored.includes(formField.name))
        .map(({ name, label }) => (
          // TODO: verify if the value is always a string
          <Field key={`${name}-field`} name={name}>
            {({ input: { value, onChange }, meta: { pristine, error } }) => {
              const placeholder =
                name in placeholders ? placeholders[name] : '';
              const isURL = types[name] === 'url';

Review comment (bug):
I try to reduce code duplication as much as possible by re-using the localhostValidator for client side checking of private urls.  
An issue with this approach is an understandable but incorrect validation message as seen below
![image](https://github.com/user-attachments/assets/19bf1b16-7c51-4d55-927b-cb58a177b35d)
Would it be better to create a new validator and corresponding validation message?

Code after:
  const nullOrWarning = (
    value: string,
    error: unknown,
    isURL: boolean,
    name: string
  ) => {
    let validationError: string | undefined;
    if (value && isURL) {
      try {
        normalizeUrl(value, { stripWWW: false });
      } catch (err: unknown) {
        validationError = (err as { message?: string })?.message;
      }
    }

    const validators = [fCCValidator, httpValidator];
    const isSolutionLink = name !== 'githubLink';
    if (isSolutionLink && !isEditorLinkAllowed) {
      validators.push(editorValidator);
      if (isLocalLinkAllowed) {
        validators.push(pathValidator);
      }
    }
    if (name === 'githubLink') {
      if (isSourceCodeLinkRequired) {
        validators.push(sourceCodeLinkExistsValidator);
      }
      validators.push(sourceCodeLinkPublicValidator);
    }
    if (!isLocalLinkAllowed) {
      validators.push(localhostValidator);
    }
    const validationWarning = composeValidators(...validators)(value);
    const message: string = (error ||
      validationError ||
      validationWarning) as string;
    return message ? (
      <HelpBlock>
        <Alert variant={error || validationError ? 'danger' : 'info'}>
          {message}
        </Alert>
      </HelpBlock>
    ) : null;
  };
  return (
    <>
      {formFields
        .filter(formField => !ignored.includes(formField.name))
        .map(({ name, label }) => (
          // TODO: verify if the value is always a string
          <Field key={`${name}-field`} name={name}>