deprecate

What is deprecate?

The 'deprecate' npm package is used to mark functions or methods as deprecated, which means they are outdated and should not be used in future code. This is useful for developers to signal that certain parts of their codebase are obsolete and will be removed in future versions.

What are deprecate's main functionalities?

Deprecate a function

This feature allows you to mark a function as deprecated. When the function is called, a deprecation warning is logged to the console.

const deprecate = require('deprecate');

function oldFunction() {
  deprecate('oldFunction() is deprecated and will be removed in future versions.');
  // function logic
}

oldFunction();

Deprecate a method in an object

This feature allows you to mark a method within an object as deprecated. When the method is called, a deprecation warning is logged to the console.

const deprecate = require('deprecate');

const myObject = {
  oldMethod: function() {
    deprecate('myObject.oldMethod() is deprecated and will be removed in future versions.');
    // method logic
  }
};

myObject.oldMethod();

Other packages similar to deprecate

util-deprecate

The 'util-deprecate' package provides a similar functionality to 'deprecate' by allowing developers to mark functions as deprecated. It is a lightweight utility that logs a deprecation warning the first time the deprecated function is called.

depd

The 'depd' package is another alternative that provides deprecation warnings for Node.js applications. It allows developers to mark functions and properties as deprecated and logs warnings when they are used. 'depd' also provides more advanced features like namespace support and custom warning messages.

README

deprecate

Mark a method as deprecated. Write a message to a stream the first time the deprecated method is called.

api

var deprecate = require('deprecate');

deprecate([string message1 [, string message2 [,...]]])

Call deprecate within a function you are deprecating. It will spit out all the messages to the console the first time and only the first time the method is called.

var deprecate = require('deprecate');

var someDeprecatedFunction = function() {
  deprecate('someDeprecatedFunction() is deprecated');
};

someDeprecatedFunction();
someDeprecatedFunction();
someDeprecatedFunction();
console.log('end');

//program output:

WARNING!!
someDeprecatedFunction() is deprecated


end

deprecate.color

Set to false to not output a color. Defaults to '\x1b[31;1m' which is red.

deprecate.silence

Set to false to do nothing at all when the deprecate method is called. Useful in tests of the library you're deprecating things within.

deprecate.stream

The stream to which output is written. Defaults to process.stderr

license

MIT