init

node_modules/dash-ast/bench/index.js

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+var bench = require('nanobench')
+var src = require('fs').readFileSync(require.resolve('acorn'))
+var parse = require('acorn').parse
+var astw = require('astw')
+var eswalk = require('estree-walk')
+var eswalker = require('estree-walker')
+var dash = require('../')
+
+bench('astw', function (b) {
+  var ast = parse(src)
+  b.start()
+  var i = 0
+  astw(ast)(function (node) { i++ })
+  b.end('walked ' + i + ' nodes')
+})
+
+bench('estree-walk', function (b) {
+  var ast = parse(src)
+  b.start()
+  var i = 0
+  eswalk(ast, function (node) { i++ })
+  b.end('walked ' + i + ' nodes')
+})
+
+bench('estree-walk steps', function (b) {
+  var ast = parse(src)
+  b.start()
+  var i = 0
+  for (var q = [ast], node; (node = q.pop()); eswalk.step(node, q)) {
+    i++
+  }
+  b.end('walked ' + i + ' nodes')
+})
+
+bench('dash-ast', function (b) {
+  var ast = parse(src)
+  b.start()
+  var i = 0
+  dash(ast, function (node) { i++ })
+  b.end('walked ' + i + ' nodes')
+})
+
+bench('dash-ast with .parent', function (b) {
+  var ast = parse(src)
+  b.start()
+  var i = 0
+  dash.withParent(ast, function (node) { i++ })
+  b.end('walked ' + i + ' nodes')
+})
+
+bench('dash-ast with enter/leave', function (b) {
+  var ast = parse(src)
+  b.start()
+  var i = 0
+  var j = 0
+  dash(ast, {
+    enter: function (node) { i++ },
+    leave: function (node) { j++ }
+  })
+  b.end('walked ' + [i, j] + ' nodes')
+})
+
+bench('estree-walker', function (b) {
+  var ast = parse(src)
+  b.start()
+  var i = 0
+  eswalker.walk(ast, {
+    enter: function (node) { i++ }
+  })
+  b.end('walked ' + i + ' nodes')
+})