(Node.js) Enter/Leave Context in Logging

Demonstrates EnterContext and LeaveContext using the Chilkat Log API.

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

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    var log = new chilkat.Log();

    // Initialize the log object with an initial context tag:
    log.Clear("myLog");

    // Add some information..
    log.LogInfo("Hello, I'm here...");

    // Open a sub-context
    log.EnterContext("abc");

    // New information is now logged within the "abc" context.
    log.LogInfo("This is inside the abc context");
    log.LogError("File not found.");

    // Perhaps open a new context...
    log.EnterContext("fileInfo");
    log.LogData("filename","something.txt");
    log.LogData("path","/somedir/xyz");
    log.LeaveContext();

    // Close the "abc" context.
    log.LeaveContext();

    // Examine the content of the log:
    console.log(log.LastErrorText);

    // This is the output:

    // myLog:
    //   Hello, I'm here...
    //   abc:
    //     This is inside the abc context
    //     File not found.
    //     fileInfo:
    //       filename: something.txt
    //       path: /somedir/xyz
    //     --fileInfo
    //   --abc
    // --myLog

}

chilkatExample();