refactor: switch to rum-distiller for oversight

package.json

@@ -23,6 +23,7 @@
   },
   "homepage": "https://github.com/adobe/helix-website#readme",
   "devDependencies": {
+    "@adobe/rum-distiller": "^1.4.1",
     "@babel/core": "7.18.0",
     "@babel/eslint-parser": "7.17.0",
     "@esm-bundle/chai": "4.3.4-fix.0",

tools/oversight/charts/barchart.js

@@ -2,11 +2,14 @@ import {
   Chart, LinearScale, registerables,
   // eslint-disable-next-line import/no-unresolved, import/extensions
 } from 'chartjs';
+import { utils } from '@adobe/rum-distiller';
 import AbstractChart from './chart.js';
 import {
-  toHumanReadable, scoreBundle, cwvInterpolationFn, cssVariable,
+  toHumanReadable, cssVariable, cwvInterpolationFn,
 } from '../utils.js';
 
+const { scoreBundle } = utils;
+
 Chart.register(LinearScale, ...registerables);
 
 const INTERPOLATION_THRESHOLD = 10;

tools/oversight/charts/sankey.js

@@ -2,11 +2,14 @@
 import { SankeyController, Flow } from 'chartjs-chart-sankey';
 // eslint-disable-next-line import/no-unresolved
 import { Chart, registerables } from 'chartjs';
+import { utils } from '@adobe/rum-distiller';
 import AbstractChart from './chart.js';
 import {
-  cssVariable, parseConversionSpec, reclassifyAcquisition, reclassifyEnter,
+  cssVariable, parseConversionSpec,
 } from '../utils.js';
 
+const { reclassifyAcquisition, reclassifyEnter } = utils;
+
 Chart.register(SankeyController, Flow, ...registerables);
 
 /*

tools/oversight/charts/skyline.js

@@ -5,18 +5,24 @@ import {
 // eslint-disable-next-line import/no-unresolved, import/extensions
 import 'chartjs-adapter-luxon';
 import {
-  INTERPOLATION_THRESHOLD,
-  scoreBundle,
-  scoreCWV,
-  toHumanReadable,
-  cwvInterpolationFn,
+  utils,
+  stats,
+} from '@adobe/rum-distiller';
+import AbstractChart from './chart.js';
+import {
   truncate,
-  simpleCWVInterpolationFn,
+  toHumanReadable,
   cssVariable,
   getGradient,
+  cwvInterpolationFn,
+  simpleCWVInterpolationFn,
+  INTERPOLATION_THRESHOLD,
 } from '../utils.js';
-import AbstractChart from './chart.js';
-import { linearRegression } from '../cruncher.js';
+
+const {
+  scoreCWV, scoreBundle,
+} = utils;
+const { linearRegression } = stats;
 
 Chart.register(TimeScale, LinearScale, ...registerables);