meta-loader

A webpack loader to achieve transpile-time metaprogramming with pure JavaScript

Playground

• dirkarnez/acorn-playground

TODO

• Seamless bridge to TypeScript
  • .d.ts generation
• operator overloading, syntactic sugar, short-hand, intentional, declarative programming (much like a DSL?)
  • safe-programming
    • static libraries
      • number-safe
        • 0.1 + 0.2 should be 0.3, not 0.30000000000000004
          • ericelliott/moneysafe: Convenient, safe money calculations in JS
      • markdown or any other markup languages as syntactic sugar - Some of them need constexpr - support runtime + compile time
        • Math symbols
        • Calculated graphics
        • ORM
        • JSX
      • compile-time wrapper
      • transpile-time types
      • matrixA + matrixB = matrixC
    • polyfills
    • transpile-time code elimination
      • Build variant
• As a test-case like constraint in code
  • Much like an assertion
  • However, different to test cases, test cases simulates user action and check the outcomes, constraints statically check if program flow is robust
• transpile-time evaluation
• reduce overhead (inline functions, compile-time wrapper, etc...)
  • erase functions / lambdas / closures
  • refer to the optimizations the V8 engine does
    • High Performance JS in V8 - YouTube
• Never try to do spaghetti code pattern
  • treat .metajs and normal .js separately
  • ultimate goal is to move all .js code to .metajs

Reference

• ExPixel/vscode-eval: VSCode extension to evaluate selected text.
• eval - Visual Studio Marketplace
• List of languages that compile to JS · jashkenas/coffeescript Wiki