Install prettier and eslint

libraries/metrics/event_loop.js

@@ -4,27 +4,31 @@
  * DS207: Consider shorter variations of null checks
  * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
  */
-let EventLoopMonitor;
-module.exports = (EventLoopMonitor = {
-	monitor(logger, interval, log_threshold) {
-		if (interval == null) { interval = 1000; }
-		if (log_threshold == null) { log_threshold = 100; }
-		const Metrics = require("./index");
-		// check for logger on startup to avoid exceptions later if undefined
-		if ((logger == null)) { throw new Error("logger is undefined"); }
-		// monitor delay in setInterval to detect event loop blocking
-		let previous = Date.now();
-		const intervalId = setInterval(function() {
-			const now = Date.now();
-			const offset = now - previous - interval;
-			if (offset > log_threshold) {
-				logger.warn({offset}, "slow event loop");
-			}
-			previous = now;
-			return Metrics.timing("event-loop-millsec", offset);
-		}
-		, interval);
-		
-		return Metrics.registerDestructor(() => clearInterval(intervalId));
-	}
-});
+module.exports = {
+  monitor(logger, interval, logThreshold) {
+    if (interval == null) {
+      interval = 1000
+    }
+    if (logThreshold == null) {
+      logThreshold = 100
+    }
+    const Metrics = require('./index')
+    // check for logger on startup to avoid exceptions later if undefined
+    if (logger == null) {
+      throw new Error('logger is undefined')
+    }
+    // monitor delay in setInterval to detect event loop blocking
+    let previous = Date.now()
+    const intervalId = setInterval(function() {
+      const now = Date.now()
+      const offset = now - previous - interval
+      if (offset > logThreshold) {
+        logger.warn({ offset }, 'slow event loop')
+      }
+      previous = now
+      return Metrics.timing('event-loop-millsec', offset)
+    }, interval)
+
+    return Metrics.registerDestructor(() => clearInterval(intervalId))
+  }
+}