Clone rSERVER implementation (#8)

* Update package publication config

* Clone rSERVER implementation

* WIP: Unit test setup

* Use .js extension in src imports

* implement e2e test for happy path

* Include src files in distribution for typechecking

* v0.0.2-0

* Generate .d.ts files

* v0.0.2-1

Co-authored-by: Andrew Hyndman <ahyndman@dropbox.com>

package.json

@@ -1,10 +1,11 @@
 {
   "name": "@dropbox-performance/ttvc",
-  "version": "0.0.1-0",
+  "version": "0.0.2-1",
   "description": "Measure Visually Complete metrics in real time",
   "repository": "git@github.com:dropbox/ttvc.git",
   "license": "Apache-2.0",
   "module": "dist/index.js",
+  "types": "dist/index.d.ts",
   "files": [
     "dist"
   ],

playwright.config.ts

@@ -11,7 +11,7 @@ import {devices} from '@playwright/test';
  * See https://playwright.dev/docs/test-configuration.
  */
 const config: PlaywrightTestConfig = {
-  testDir: './test/specs',
+  testDir: './test/e2e',
   /* Maximum time one test can run for. */
   timeout: 30 * 1000,
   expect: {

src/annotations.ts

@@ -0,0 +1,15 @@
+export const enum AnnotationNameEnum {
+  // visually complete metrics
+  VC_IN_VIEWPORT_MUTATION_OBSERVED_COUNT = 'vc_in_viewport_mutation_observed_count',
+  VC_INTERSECTIONS_SCHEDULED_COUNT = 'vc_intersections_scheduled_count',
+  VC_MUTATIONS_OBSERVED_COUNT = 'vc_mutations_observed_count',
+  VC_INTERSECTIONS_OBSERVED_COUNT = 'vc_intersections_observed_count',
+  VC_TOTAL_MUTATION_CALLBACK_LATENCY_OVERHEAD_MS = 'vc_total_mutation_callback_latency_overhead_ms',
+  VC_TOTAL_INTERSECTION_CALLBACK_LATENCY_OVERHEAD_MS = 'vc_total_intersection_callback_latency_overhead_ms',
+  VC_TOTAL_CALLBACK_LATENCY_OVERHEAD_MS = 'vc_total_callback_latency_overhead_ms',
+  VC_ELEMENTS_SCHEDULED_FOR_OBSERVATION_BUT_NOT_OBSERVED_COUNT = 'vc_elements_scheduled_for_observation_but_not_observed_count',
+}
+
+export type AddAnnotationType = (name: string, value: number | boolean | string) => void;
+
+export type AnnotationsType = Map<string, number | boolean | string>;