feat: add timestamp stripping utility (#48)

Author: baileympearson

package.json

@@ -2,7 +2,8 @@
   "name": "dbx-js-tools",
   "private": true,
   "workspaces": [
-    "packages/bson-bench"
+    "packages/bson-bench",
+    "packages/evergreen-timestamp-utils"
   ],
   "devDependencies": {
     "@tsconfig/node16": "^16.1.4",
@@ -28,4 +29,4 @@
     "check:eslint": "ESLINT_USE_FLAT_CONFIG=false eslint -v && ESLINT_USE_FLAT_CONFIG=false  eslint --max-warnings=0 --ext '.js,.ts,.mts' packages/**/src packages/**/test",
     "fix:eslint": "npm run check:eslint -- --fix"
   }
-}
+}

packages/evergreen-timestamp-utils/README.md

@@ -0,0 +1,11 @@
+# evergreen-timestamp-utils
+
+A simple utility for stripping timestamps from evergreen logs.  
+
+## usage
+
+(macos)
+
+```bash
+pbpaste | node index.mjs | pbcopy
+```

packages/evergreen-timestamp-utils/index.mjs

@@ -0,0 +1,45 @@
+#!/usr/bin/env node
+
+import { pipeline } from 'stream/promises';
+
+async function* lines(generator) {
+  let data = '';
+
+  for await (const chunk of generator) {
+    data += chunk;
+  }
+
+  yield* data.split('\n');
+}
+
+async function* removeEmptyLines(generator) {
+  for await (const chunk of generator) {
+    if (chunk.length) yield chunk;
+  }
+}
+
+async function* removeTimestamp(generator) {
+  for await (const line of generator) {
+    const timestamp = /\[.*\](?<rest>.*)/;
+    const {
+      groups: { rest }
+    } = line.match(timestamp) ?? { groups: { rest: line } };
+    yield rest;
+  }
+}
+
+async function* addNewlines(generator) {
+  for await (const item of generator) {
+    yield item;
+    yield '\n';
+  }
+}
+
+await pipeline(
+  process.stdin,
+  lines,
+  removeEmptyLines,
+  removeTimestamp,
+  addNewlines,
+  process.stdout
+);

packages/evergreen-timestamp-utils/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "evergreen-timestamp-utils",
+  "version": "0.0.1",
+  "description": "utility to strip timestamp from evergreen logs",
+  "private": true,
+  "main": "./index.mjs",
+  "scripts": {},
+  "engines": {
+    "node": ">=16.20.1",
+    "npm": ">=9.0.0"
+  },
+  "keywords": [],
+  "author": "The MongoDB NodeJS Team <[email protected]>",
+  "license": "Apache-2.0"
+}