Fix the log to file issue. (#3879)

This bug happened when we moved to ESM and there's no new
release for Intel with a fix (yet).

https://github.com/sitespeedio/sitespeed.io/issues/3878

.github/workflows/linux.yml

@@ -65,6 +65,6 @@ jobs:
     - name: Run test without a CLI
       run: xvfb-run node test/runWithoutCli.js
     - name: Run test with Influx 1.8
-      run: bin/sitespeed.js http://127.0.0.1:3001/simple/ -n 1 --influxdb.host 127.0.0.1 --xvfb
+      run: bin/sitespeed.js http://127.0.0.1:3001/simple/ -n 1 --influxdb.host 127.0.0.1 --xvfb --logToFile
     - name: Run test with Influx 2.6.1
       run: bin/sitespeed.js http://127.0.0.1:3001/simple/ -n 1 --influxdb.host 127.0.0.1 --influxdb.port 8087 --influxdb.version 2 --influxdb.organisation sitespeed --influxdb.token sitespeed --xvfb

lib/core/logging.js

@@ -1,5 +1,6 @@
 import intel from 'intel';
-
+import { createWriteStream } from 'node:fs';
+import { inherits } from 'node:util';
 const {
   INFO,
   DEBUG,
@@ -7,11 +8,44 @@ const {
   TRACE,
   NONE,
   basicConfig,
-  addHandler,
-  handlers,
+  Logger,
+  Handler,
   Formatter
 } = intel;
 
+// FileHandler isn't exposed in Intel when we moved to ESM.
+// To fix that for now we just use the same code as Intel.
+
+function StreamHandler(options) {
+  options = options || {};
+  if (!options.stream) {
+    options = { stream: options };
+  }
+  Handler.call(this, options);
+  this._stream = options.stream;
+}
+
+inherits(StreamHandler, Handler);
+
+StreamHandler.prototype.emit = function streamEmit(record) {
+  this._stream.write(this.format(record) + '\n');
+};
+
+function FileHandler(options) {
+  if (typeof options === 'string') {
+    options = { file: options };
+  }
+  this._file = options.file;
+
+  options.stream = this._open();
+  StreamHandler.call(this, options);
+}
+inherits(FileHandler, StreamHandler);
+
+FileHandler.prototype._open = function open() {
+  return createWriteStream(this._file, { flags: 'a' });
+};
+
 export function configure(options, logDir) {
   options = options || {};
 
@@ -52,8 +86,9 @@ export function configure(options, logDir) {
   }
 
   if (options.logToFile) {
-    addHandler(
-      new handlers.File({
+    let logger = new Logger();
+    logger.addHandler(
+      new FileHandler({
         file: logDir + '/sitespeed.io.log',
         formatter: new Formatter({
           format: '[%(date)s] %(levelname)s: [%(name)s] %(message)s',