ESLint VS JS-Beautifier

Have you ever used a transpiler, a linter or a code formatter, such as: Babel, ESLint or Prettier? If the answer is yes, then you've already used metaprogramming! 👏

ESLint is a JavaScript and TypeScript linting tool, which means it analyses source code and identifies possible programming problems and errors. It underlines errors in red and warnings in yellow. It is very useful to cover coding styles issues.

Best: set up an IDE (Visual Studio Code is free and an industry standard) and configure ESLint and the ESLint extension for your IDE so that you can catch errors like this before even running your script.

This is the extension for integrating the most well-known linter for JavaScript into Visual Studio Code. ESLint is a static analyzer of your source code which helps you find problems quickly. It will highlight issues in your code for all loaded files from your workspace. I don’t feel there’s much to write about here – just check their website and give this extension a try 😉

Linting is an important step in maintaining code quality, The React Library Builder uses ESLint and eslint-config-prettier for linting. You can modify linting rules by overriding them in the .eslintrc file.

Setup When I open the project in VS Code, it prompts me about ESlint and Docker apps that the project uses, so I make sure to have them. I run pnpm install command to install dependencies in the project while I'm in the project's directory folder. There are different ways to run the project in the documentation, and I want to run both frontend and backend, so I run pnpm services:start to run the project locally. If Docker is running, it should setup to host the project locally. Be sure to run pnpm services:stop when you are done, and clear the cache if you need to. If I need to use the database in some way, like testing login, I make sure to run cp ./src/db/env.example .env to get the right env file copy and then run pnpm db:init to setup the database.

ESLint to set some rules the code should abide by

We can use TypeScript compiler and ESLint for this.

Similar to how a software has integration or unit tests that are built to make sure changes in the software don’t break the entire system, we implemented tests for our documentation’s style guide using Vale and ESLint.

If you are afraid of test code leaking into the application. You can use eslint to prevent this:

You can use an online service like beautifier.io to try to clean it up a bit. There is no way to get the original human readable JS back though. If you are interested in reading source code, you might have more luck looking at repos on GitHub, which will not be minified.

For a recent personal project, I wanted to format the generated HTML. My first stab at it used Prettier. But, I was very underwhelmed with the processing speed. I then gave js-beautify[1] a try, which I found to be much, much faster.

[1] https://github.com/beautify-web/js-beautify

Best procedure is, to use something like beautifier.io and look, how the sessionstore.json is designed

Or you can use something like https://beautifier.io/ and play with its options till you get something like you want.

This. Except I might suggest also making it readable via pretty-formatting it (adding newlines + indentation between entries). You could try your own custom regex (more difficult) or a third-party like js-beautify (easier but lacks some formatting options).

if the latter, that is more difficult. if you're savvy enough to use Chrome's debugger, you can probably find how the game represents its state, then create a clone (or heavily modify the existing source code) that stores its state in the same exact way. the game code is heavily obfuscated though (here's a hint: use https://beautifier.io/ to help you out, and make sure the "Unescape printable chars encoded as \xNN or \uNNNN?" is checkmarked). when evaluating on the live environment you might have to create a chrome extension or something to read the real game's state and feed it to the agent.

Using https://beautifier.io/ I was able to split this 264 kB block of lard into separate lines and trace the fault. The code is relying on this new JavaScript/ECMAscript feature: