Pretty Diff is a language-aware
data comparison
In computing, file comparison is the calculation and display of the differences and similarities between data objects, typically text files such as source code.
The methods, implementations, and results are typically called a diff, after the Un ...
utility implemented in
TypeScript
TypeScript is a free and open source programming language
A programming language is a system of notation for writing computer programs. Most programming languages are text-based formal languages, but they may also be graphical. They are ...
. The online utility is capable of source code
prettification,
minification, and comparison of two pieces of input text. It operates by removing code comments from supported languages and then performs a
pretty-print operation prior to executing the
diff
In computing, the utility diff is a data comparison tool that computes and displays the differences between the contents of files. Unlike edit distance notions used for other purposes, diff is line-oriented rather than character-oriented, but it ...
algorithm. An abbreviated list of
unit tests
In computer programming, unit testing is a software testing method by which individual units of source code—sets of one or more computer program modules together with associated control data, usage procedures, and operating procedures&mda ...
is provided. The documentation claims the JavaScript pretty-print operation conforms to the requirements of
JSLint
JSLint is a static code analysis tool used in software development for checking if JavaScript source code complies with coding rules. It is provided primarily as a browser-based web application accessible through the domain jslint.com, but there ...
.
As Pretty Diff is written entirely in TypeScript, the application executes in a
web browser
A web browser is application software for accessing websites. When a user requests a web page from a particular website, the browser retrieves its files from a web server and then displays the page on the user's screen. Browsers are used on ...
or on
command line
A command-line interpreter or command-line processor uses a command-line interface (CLI) to receive commands from a user in the form of lines of text. This provides a means of setting parameters for the environment, invoking executables and pro ...
using a stand-alone JavaScript
interpreter, such as
Node.js
Node.js is an open-source server environment. Node.js is cross-platform and runs on Windows, Linux, Unix, and macOS. Node.js is a back-end JavaScript runtime environment. Node.js runs on the V8 JavaScript Engine and executes JavaScript code o ...
.
As of March 23, 2016 Pretty Diff stated it would abandon
NPM in response to a list of disagreements. On April 18, 2016 in parallel to the release of Pretty Diff version 2.0.0. the NPM package is updated to artificial version 99 where it is effectively locked into version 1.16.37.
The source code is published at the Pretty Diff
GitHub
GitHub, Inc. () is an Internet hosting service for software development and version control using Git. It provides the distributed version control of Git plus access control, bug tracking, software feature requests, task management, continuous ...
repository.
Alternatives
JS Diff Lib- Diff tool written in JavaScript
JS Beautify- HTML and JavaScript beautification
- Minifier for JavaScript written in JavaScript
CSSmin- Minifier for CSS
*
Google Closure Compiler
Google Closure Tools is a set of tools to help developers build rich web applications with JavaScript. It was developed by Google for use in their web applications such as Gmail, Google Docs and Google Maps.
Closure Compiler
The Closure Compi ...
- Minifier for CSS, JavaScript, and HTML.
See also
*
Comparison of file comparison tools
This article compares computer software tools which are used for accomplishing comparisons of files of various types. The file types addressed by individual file comparison apps varies, but may include text, symbols, images, audio, or video. Th ...
- Diff tools
*
Diff
In computing, the utility diff is a data comparison tool that computes and displays the differences between the contents of files. Unlike edit distance notions used for other purposes, diff is line-oriented rather than character-oriented, but it ...
*
Obfuscated code
In software development, obfuscation is the act of creating source or machine code that is difficult for humans or computers to understand. Like obfuscation in natural language, it may use needlessly roundabout expressions to compose statement ...
*
Longest common subsequence problem
The longest common subsequence (LCS) problem is the problem of finding the longest subsequence common to all sequences in a set of sequences (often just two sequences). It differs from the longest common substring problem: unlike substrings, sub ...
*
Markup language
Markup language refers to a text-encoding system consisting of a set of symbols inserted in a text document to control its structure, formatting, or the relationship between its parts. Markup is often used to control the display of the document ...
*
Levenshtein distance
In information theory, linguistics, and computer science, the Levenshtein distance is a string metric for measuring the difference between two sequences. Informally, the Levenshtein distance between two words is the minimum number of single-charact ...
References
External links
*
*{{GitHub, prettydiff/prettydiff
File comparison tools