chore: add csv parsing script for performance comparison

package.json

@@ -3,7 +3,8 @@
   "private": true,
   "workspaces": [
     "packages/bson-bench",
-    "packages/driver-bench"
+    "packages/driver-bench",
+    "packages/metrics"
   ],
   "devDependencies": {
     "@tsconfig/node16": "^16.1.3",

packages/metrics/.gitignore

@@ -0,0 +1,2 @@
+data/*.csv
+data/*.json

packages/metrics/package.json

@@ -0,0 +1,18 @@
+{
+    "name": "metrics",
+    "version": "1.0.0",
+    "description": "helpers for parsing performance results",
+    "module": "./lib/mod.mjs",
+    "bin": {
+        "mndb": "./lib/cli.mjs"
+    },
+    "scripts": {
+        "start": "node --disable-warning=ExperimentalWarning --experimental-strip-types src/main.mts"
+    },
+    "keywords": [],
+    "author": "The MongoDB NodeJS Team <[email protected]>",
+    "license": "Apache-2.0",
+    "dependencies": {
+        "csv": "^6.3.10"
+    }
+}

packages/metrics/src/main.mts

@@ -0,0 +1,21 @@
+import fs from 'node:fs';
+import stream from 'node:stream/promises';
+
+import * as csv from 'csv';
+
+const NUM_HEADERS = ['base_mean', 'compare_mean', 'percent_change'];
+const HEADERS = ['task', 'test', 'measurement', ...NUM_HEADERS];
+
+await stream.pipeline(
+  fs.createReadStream('./data/Data.csv', 'utf8'),
+  csv.parse({ columns: true }),
+  csv.transform(record =>
+    Object.fromEntries(
+      Object.entries(record)
+        .filter(([header]) => HEADERS.includes(header))
+        .map(([header, value]) => [header, NUM_HEADERS.includes(header) ? Number(value) : value])
+    )
+  ),
+  async (source: csv.transformer.Transformer) =>
+    console.table((await source.toArray()).toSorted((a, b) => a.percent_change - b.percent_change))
+);

packages/metrics/tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "outDir": "lib",
+    "strict": false,
+    "verbatimModuleSyntax": true,
+    "target": "ESNext",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext"
+  },
+  "include": [
+    "src/**/*"
+  ]
+}