(Node.js) Transition from Imap.FetchSingleHeader to Imap.FetchEmail

Provides instructions for replacing deprecated FetchSingleHeader method calls with FetchEmail.

Note: This example requires Chilkat v11.0.0 or greater.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    var imap = new chilkat.Imap();

    // ...
    // ...

    // ------------------------------------------------------------------------
    // The FetchSingleHeader method is deprecated:

    // emailObj: Email
    var emailObj = imap.FetchSingleHeader(1,false);
    if (imap.LastMethodSuccess == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // ...
    // ...

    // ------------------------------------------------------------------------
    // Do the equivalent using FetchEmail.
    // Your application creates a new, empty Email object which is passed 
    // in the last argument and filled upon success.

    var headerOnly = true;

    var emailOut = new chilkat.Email();
    var success = imap.FetchEmail(headerOnly,1,false,emailOut);
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }


}

chilkatExample();