strong-trace/t.js

StrongTrace Node.js Tracer

var ScopeTracer = require("./scopetracer")

var input = "// some javascript!\n\
function foo() {\n\
  // In a function\n\
  var abc = 'ABC'\n\
  setTimeout(function () {\n\
    console.log(abc)\n\
  }, 10)\n\
}\n\
foo()\n"

function mutate(content) {
  // We're putting things in single quotes, escape single quotes
  var name = this.fnName.replace(/'/g, "\\'")
  if (this.body.length === 0) {
    return []
  }
  return [{insertion: "console.log('entering " + name + "');", pos: this.body[0].range[0]}]
}

function nodeTest() {
  // Only functions, not outer enclosing scope.
  return this.path.length > 0
}

console.log(input)
var tracer = ScopeTracer(mutate, nodeTest)

var output = tracer.transform(input)

console.log(output)

eval(output)