POST Request to Azure DevOps Rest API with Reactjs

Azure DevOps Rest API Documentation will give you access to the platform. If you are decided to develop totally in React js. I would like to suggest to take a starter kit, mostly will cover all your basic setup to React.

Follow the below steps to get an idea of how you can achieve with react js

1. Need to set up OAuth in azure deops. The below link will give an idea. In the callback page, you need to store access token store
   https://learn.microsoft.com/en-us/azure/devops/integrate/get-started/authentication/oauth?view=azure-devops. If you have personal auth token this is not required

2. Get all list of repositories using fetch or Axios API Example with Axios:

   const headers = {
          'Content-Type': 'application/json',
           'Authorization': 'bearer token' or 'basic personalaccesstoken'
        }
   
   axios.get('https://dev.azure.com/{organization}/{project}/_apis/git/repositories', {
           headers: headers,
           params: {
           'api-version':'5.1'
         }
         })
         .then(function (response) {
           console.log(response);
         })
         .catch(function (error) {
           console.log(error);
         });
   

3. Use react form to capture the input value and on submit of form, validate against the repositories, if it is new call the Axios or fetch post method to create a new repository

Example with Axios

  const headers = {
      'Content-Type': 'application/json',
      'Authorization': 'bearer token'
    }
    const data = {
    name: '' 
    parentRepository: {id: '', ....}
    project: {id: '', ...}
    }
     axios.post('https://dev.azure.com/{organization}/{project}/_apis/git/repositories', JSON.stringify(data), 
     {
            headers: headers,
            params: {
            'api-version':'5.1'
          }
          })
          .then(function (response) {
            console.log(response);
          })
          .catch(function (error) {
            console.log(error);
          });

Similarly, you can access all the API's mentioned REST API documentation of Microsoft. link