Adding a setup to investigate the JIT output

.gitignore

@@ -4,4 +4,7 @@
 /e2e
 /public
 /coverage
-/.nyc_output
+/.nyc_output
+/perf/*.log
+/perf/*.cfg
+/perf/*.json

perf/minimal.js

@@ -0,0 +1,18 @@
+// This is a minimal test case for performance investigations
+
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const {createNoise2D} = require('..');
+
+const noise2D = createNoise2D();
+
+for(let i = 0; i < 3; i++) {
+  console.log('pass', i);
+  let sum = 0;
+  for(let y = 0; y < 10; y+=0.1) {
+    for(let x = 0; x < 10; x+=0.1) {
+      sum += noise2D(x, y);
+    }
+  }
+  console.log(sum);
+}
+

perf/trace.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+node --random_seed=1 --hash_seed=1 --print-opt-code --code-comments --trace-deopt --trace-turbo minimal.js