The code imports a module and a function (getGist) from it to read Gist files, and then uses conditional execution to call the getGist function with a specific Gist ID if a variable $ is defined. The result of the getGist function is sent using the $ object's sendResult method, and any errors are sent using the sendError method.

Cell 2

var importer = require('../Core');
var getGist = importer.import("read gist files");

if(typeof $ !== 'undefined') {
    $.async();
    getGist('a572d0830ae72b962e12a57adaec7c52')
        .then(r => $.sendResult(r))
        .catch(e => $.sendError(e))
}

// Import required modules
const Core = require('../Core');
const { readGistFiles } = Core.import('read gist files');

// Extract the getGist function to improve readability
const getGist = (gistId) => readGistFiles(gistId);

// Extract the $ object to improve readability
const { sendResult, sendError, async: asyncMethod } = $;

// Check if $ object is defined
if (typeof $!== 'undefined') {
  // Call the async method
  asyncMethod();

  // Get the gist
  getGist('a572d0830ae72b962e12a57adaec7c52')
   .then((response) => {
      // Send the result
      sendResult(response);
    })
   .catch((error) => {
      // Send the error
      sendError(error);
    });
} else {
  // Log an error if $ object is not defined
  console.error('$ object is not defined');
}

// TODO: Improve the error handling mechanism

Code Breakdown

Importing Modules

var importer = require('../Core');
var getGist = importer.import('read gist files');

• The code imports the importer module from a file located at ../Core.
• The importer module is then used to import the getGist function, which is specifically designed to read Gist files.

Conditional Execution

if(typeof $!== 'undefined') {
    $.async();
    getGist('a572d0830ae72b962e12a57adaec7c52')
       .then(r => $.sendResult(r))
       .catch(e => $.sendError(e))
}

• The code checks if a variable named $ is defined. If it is, the following code is executed.
• The $ object's async method is called.
• The getGist function is called with a Gist ID of 'a572d0830ae72b962e12a57adaec7c52' and returns a promise.
• The promise is handled using the .then and .catch methods:
  • If the promise is resolved, the result (r) is sent using the $ object's sendResult method.
  • If the promise is rejected, the error (e) is sent using the $ object's sendError method.