AST Transformations

Constant Folding

See chapter Constant Folding

Master the AST Lectures

See chapter Master the AST lecture series

Codemods

See chapter Codemods

ast-types

See chapter ast-types

JSCodeshift and Recast

See chapter JSCodeshift and Recast

References

JSCodeshift

• Codeshift at GitHub
• JSCodeshift API Doc (opens new window)
• Write Code to Rewrite Your Code: jscodeshift Examples: removing console.log, replacing imported method calls, from positional parameters to parameter object
• jscodeshift "hello world" example
• jscodeshift cpojer/js-codemod no-vars.js Conservatively converts var to const or let. jscodeshift -t js-codemod/transforms/no-vars.js <file>

Rajasegar works

• Migrating large codebase with Codemods (opens new window) YouTube video. Talk at JSFoo Pune 2020. On component architecture, performance, security for front-end, and emerging trends. Rajasegar Chandran.
  • Slides (opens new window)
  • Awesome codemods (opens new window) at rajasegar/awesome-codemods
• AST-Builder (opens new window) by Rasegar. My fork at https://github.com/ULL-ESIT-PL/ast-builder (opens new window), deployment at https://ull-esit-pl.github.io/ast-builder/ (opens new window)

Riki Fridrich

• Write a code that writes code (opens new window) talk by Riki Fridrich. Sep 22, 2021. WebExpo
• fczbkk/talk-2021-09-22-webexpo-codemod (opens new window) GitHub Repo

ast-types and recast

• recast (opens new window)
• ast-types examples in crguezl/hello-ast-types (opens new window)
• api documentation for ast-types (v0.9.11) (opens new window) (Don't trust it. Current version is 0.15)

Estraverse

• Estraverse README.md (opens new window)
• Simple examples of AST traversal and transformation crguezl/ast-traversal (opens new window)

Repositorios interesantes de cowchimp

• A curated list of awesome AST resources
• AST Scout is a tool for analyzing and visualizing the relationship between the public API of a Class\Module and its implementations details (e.g. private methods, dependencies used).
• A web tool to explore the ASTs generated by various parsers. https://astexplorer.net/ The repo

AST: Awesome Super Tool - JS Roundabout - April 2019

This is a talk similar to Yonatan Mevorach by Leonardo Crespo given in 2019:

• AST: Awesome Super Tool - JS Roundabout - April 2019 (opens new window) by Leonardo Crespo