This is related to this other question:  Last evaluated expression in Javascript  But I wanted to provide more details about what I wanted to do and show how I finally solved the problem as some users requested in the comments.  I have snippets of Ja...
How do you build an AST (Abstract Syntax Tree) for left-associative operators using PEG.js?  I've tried to write some code based on the information I found on the internet, but I seem to have made a mistake.  The code I wrote generates an incorre...
I'm implementing a pretty-printer for a JavaScript AST and I wanted to ask if someone is aware of a "proper" algorithm to automatically parenthesize expressions with minimal parentheses based on operator precedence and associativity. I ha...
var foo = (function(){   var x = "bar";   return function(){     console.log(x);   }; })();  console.log(foo.toString()); // function() {console.log(x);} (foo)(); // 'bar' eval('(' + foo.toString()+')()')); // error: x...
https://astexplorer.net/#/gist/ad90272020dd0bfb15619d93cca81b66/28d3cf7178271f4f99b10bc9352daa873c2f2b20  // file var a = "a" // what if this is import statement?  // jscodeshift export default (file, api) => {   const j = api.jscodeshift;...
I'd like to use JavaScript to parse an html document into an abstract syntax tree, where each node also includes start and end line numbers (and hopefully also character positions) for each node.  Are there any existing solutions that can do this...
I'm looking for a library in scala that generates JavaScript from an abstract syntax tree. I want to use it in an compiler that generates JavaScript at the end and I don't want to implement the pretty printing part myself....
I am working with reflect.js (a nice Javascript parser) from Zach Carter on github; I am trying to modify the behavior of his parser to handle comments as normal tokens that should be parsed like anything else.  The default behavior of reflect.js is...
I need to convert a string into an object (AST like) obeying rules from a specific grammar.   I basically have 3 types of expressions ('@', '$' and '#'). The expressions of type '#' are written as #something while the...
I'd like to do some code-analysis of Javascript. I'd prefer to operate on ASTs or S-Expressions. It's certainly possible that the V8 engine builds this, though I can't seem to find any documentation on how to access this information f...

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