benchmark: (misc) use destructuring

PR-URL: https://github.com/nodejs/node/pull/18250
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

benchmark/misc/freelist.js

@@ -8,9 +8,8 @@ const bench = common.createBenchmark(main, {
   flags: ['--expose-internals']
 });
 
-function main(conf) {
+function main({ n }) {
   const FreeList = require('internal/freelist');
-  const n = conf.n;
   const poolSize = 1000;
   const list = new FreeList('test', poolSize, Object);
   var i;

benchmark/misc/function_call/index.js

@@ -31,13 +31,13 @@ const bench = common.createBenchmark(main, {
   millions: [1, 10, 50]
 });
 
-function main(conf) {
-  const n = +conf.millions * 1e6;
+function main({ millions, type }) {
+  const n = millions * 1e6;
 
-  const fn = conf.type === 'cxx' ? cxx : js;
+  const fn = type === 'cxx' ? cxx : js;
   bench.start();
   for (var i = 0; i < n; i++) {
     fn();
   }
-  bench.end(+conf.millions);
+  bench.end(millions);
 }

benchmark/misc/object-property-bench.js

@@ -59,10 +59,10 @@ function runSymbol(n) {
   bench.end(n / 1e6);
 }
 
-function main(conf) {
-  const n = +conf.millions * 1e6;
+function main({ millions, method }) {
+  const n = millions * 1e6;
 
-  switch (conf.method) {
+  switch (method) {
     // '' is a default case for tests
     case '':
     case 'property':

benchmark/misc/punycode.js

@@ -62,10 +62,8 @@ function runICU(n, val) {
   bench.end(n);
 }
 
-function main(conf) {
-  const n = +conf.n;
-  const val = conf.val;
-  switch (conf.method) {
+function main({ n, val, method }) {
+  switch (method) {
     // '' is a default case for tests
     case '':
     case 'punycode':

benchmark/misc/startup.js

@@ -8,8 +8,7 @@ const bench = common.createBenchmark(startNode, {
   dur: [1]
 });
 
-function startNode(conf) {
-  const dur = +conf.dur;
+function startNode({ dur }) {
   var go = true;
   var starts = 0;
 

benchmark/misc/util-extend-vs-object-assign.js

@@ -8,19 +8,17 @@ const bench = common.createBenchmark(main, {
   n: [10e4]
 });
 
-function main(conf) {
+function main({ n, type }) {
   let fn;
-  const n = conf.n | 0;
-
-  if (conf.type === 'extend') {
+  if (type === 'extend') {
     fn = util._extend;
-  } else if (conf.type === 'assign') {
+  } else if (type === 'assign') {
     fn = Object.assign;
   }
 
   // Force-optimize the method to test so that the benchmark doesn't
   // get disrupted by the optimizer kicking in halfway through.
-  for (var i = 0; i < conf.type.length * 10; i += 1)
+  for (var i = 0; i < type.length * 10; i += 1)
     fn({}, process.env);
 
   const obj = new Proxy({}, { set: function(a, b, c) { return true; } });