RReverser's

Ingvar Stepanyan

JavaScript developer, speaker and reverse engineer. D2D programmer. Sometimes human.

  1. Tabs vs spaces: the ultimate argument

    Did you know that using specific code style can affect your JavaScript performance? Gave a 1.5x performance boost in my case ;) That beautiful moment when you change indentation from spaces to tabs and your function suddenly becomes short enough to get inlined by V8.— Ingvar Stepanyan (@RReverser) April…

    • on JavaScript, Performance

  2. GOTOs in JavaScript are now possible

    And I'm back with my crazy experiments. Currently I'm actively playing with Ragel - state machine compiler that generates highly optimized code for streaming lexers, scanners etc. in a set of languages (C, Java, Ruby, C#, ...). Unfortunately, it didn't have support for JavaScript, and I recently implemented it (likely to…

    • on JavaScript, Transpilers

  3. ES6 modules are dead, long live C preprocessor!

    Did you know you could use C preprocessor even for JavaScript files? (yes, it doesn't care about syntax that much) Say, we want to implement C-like "modules" (inclusions) in JavaScript. Create first file 1.js (filenames don't matter) like this: #ifndef HELLO_1 #define HELLO_1 console.log('hello'); #endif…

    • on JavaScript, ES6, Transpilers

  4. ECMAScript Syntax Graph

    Ever wondered how ECMAScript syntax spec would look like if represented as a graph? Wonder no more - I just built one for fun! Here it is in SVG: If your browser doesn't support SVG, you can view PNG version instead (but be careful on metered connections - it's 3.…

    • on ES6, ECMAScript

  5. ECMAScript decorators on functions

    This one particular question is being often raised around the usage of the new ECMAScript decorators proposal: why can't I use it for regular function declarations? Well, the answer is simple: hoisting :( Since JS hoists up function declarations, those expressions that you use inside of decorators, depending on proposed "solution"…

    • on JavaScript, ES7, ECMAScript, Decorators, Functions, Functional programming

  6. Started work on ES6 -> asm.js conversion

    View on GitHub I know this sounds crazy, but I always wondered why do we always give out such a speedup technique as asm.js (it speeds up code in all the modern browsers!) to developers from other languages if we can use it for own code in JavaScript as…

    • on JavaScript, ES6, Transpilers, asm.js