最小最速で作るaltjs - mizchi's blog
最近、というか昨日からTypedCoffeeScriptの開発再開してAST 気分が盛り上がってるので、簡単なチュートリアルでも。 この記事でやること ASTの取得 ASTの生成 JavaScript の出力 やらないこと 構文解析 準備 適当にプロジェクト作ります。 $ mkdir tinyaltjs $ cd tinyaltjs $ npm init # 色々聞かれるけどEnter 連打で良い $ npm install escodegen esprima prettyjson --save esprima はJavaScript のコードをASTに変換。 escodegen は AST から JavaScript を生成。どっちもConstellationさん製 escodegenはConstellationさん製で、彼はesprimaにもコミットしてます。この界隈に来ると基本的に彼
Fun with Esprima and Static Analysis
Writing programs to do static analysis on Javascript is easier now than ever, thanks to Esprima - the Javascript parser library. In this post, I'll demonstrate how to use Esprima to do something fairly simple - detect accidentally leaked global variables in a program. Accidentally leaked global variables happen when a value is assigned to an identifier without declaring the identifier as a variabl
GitHub - facebookarchive/jstransform: A simple utility for pluggable JS syntax transforms using the esprima parser.
A simple utility for pluggable JS syntax transforms using the esprima parser. Makes it simple to write and plug-in syntax transformations Makes it simple to coalesce multiple syntax transformations in a single pass of the AST Gives complete control over the formatting of the output on a per-transformation basis Supports source map generation Comes pre-bundled with a small set of (optional) ES6 ->
JavaScript Code Analysis with Esprima - Marakana
As applications get more complex, the underlying systems will get harder and harder to maintain and manage. JavaScript's tools aren't keeping pace, and that's a problem. Ariya Hidayat spoke to the San Francisco HTML5 Usergroup about this highly performant, extensible JavaScript parser with features designed to improve code inspection, static and dynamic analysis, and source transformation. Working
An Analysis of the Redesign of the CoffeeScript Compiler - YOW2012 // Speaker Deck
An Analysis of the Redesign of the CoffeeScript Compiler - YOW2012
Bringing JavaScript Code Analysis to The Next Level
EmpireJS 2012 Talk
JavaScript's Future Class Syntax in Today's Browsers with Esprima and Harmonizr · ariya.io
JavaScript's Future Class Syntax in Today's Browsers with Esprima and Harmonizr Sep 19, 2012 3 min read #coding #craftsmanship #esprima #javascript #jstools One interesting proposal for a class syntax for JavaScript is the so-called maximally-minimal classes. There is no guarantee that this will become the future standard which everyone follows, nevertheless its simplicity is the attractive main p
escodegen + esprima で JS のデバッグをしたら捗りそう - tokuhirom's blog
escodegen + esprima で JS のデバッグをしたら捗りそう 以下のようなコードを実行すると console.log([ [1,1,8] [2,1,16] ]); このような結果になる。 [ undefined ] アレレーってなってたんだけど kazuho さんにきいたところ、 [1,1,8][2,1,16] => ([1,1,8])[(2,1,16)] => ([1,1,8])[16] => undefined ってことでした。 こんな時、Perl Monger ならとりあえず B::Deparse することによって解決の糸口をさがすんだけど、そういうの EcmaScript でどうすんすかね、ってなことを kazuho さんにきいたところ、esprima っていう es のパーサーがあるよって教えてもらったので、AST はとりだせたんだけど、AST をみても埒があかな
JavaScript syntax tree visualization with Esprima · ariya.io
JavaScript syntax tree visualization with Esprima Apr 4, 2012 2 min read #code #esprima #javascript #parser One little feature I added to Esprima parser demo was syntax tree visualization (using YUI TreeView). While it is already possible to see the JSON version of the parsed AST, often a much more visual representation improves the syntax analysis workflow. It is also more educational. An example
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GitHub - int3/metajs: Visualize your Javascript with a CPS metacircular interpreter.