Add signals enums (#1110)

Author: silesky

.changeset/modern-plums-glow.md

@@ -0,0 +1,5 @@
+---
+'@segment/analytics-signals': minor
+---
+
+Add enums

packages/signals/signals/src/core/processor/sandbox.ts

@@ -7,7 +7,7 @@ import {
 import { logger } from '../../lib/logger'
 import createWorkerBox from 'workerboxjs'
 
-import { AnalyticsRuntimePublicApi, Signal } from '../../types'
+import { AnalyticsRuntimePublicApi, Signal, AnalyticsEnums } from '../../types'
 import { createSignalsRuntime } from './signals-runtime'
 import { replaceBaseUrl } from '../../lib/replace-base-url'
 
@@ -183,6 +183,7 @@ export class Sandbox {
     const analytics = new AnalyticsRuntime()
     const scope = {
       analytics,
+      ...AnalyticsEnums,
     }
     logger.debug('processing signal', { signal, scope, signals })
     const code = [
@@ -191,7 +192,7 @@ export class Sandbox {
       `const signals = createSignalsRuntime(${JSON.stringify(signals)})`,
       'try { processSignal(' +
         JSON.stringify(signal) +
-        ', { analytics, signals }); } catch(err) { console.error("Process signal failed.", err); }',
+        ', { analytics, signals, SignalType, EventType, NavigationAction }); } catch(err) { console.error("Process signal failed.", err); }',
     ].join('\n')
     await this.jsSandbox.run(code, scope)
 

packages/signals/signals/src/types/process-signal.ts

@@ -16,7 +16,31 @@ export interface AnalyticsRuntimePublicApi {
 export type ProcessSignalScope = {
   analytics: AnalyticsRuntimePublicApi
   signals: SignalsRuntime
-}
+} & typeof AnalyticsEnums
+
 export interface ProcessSignal {
   (signal: Signal, ctx: ProcessSignalScope): void
 }
+
+export const AnalyticsEnums = {
+  SignalType: Object.freeze({
+    Interaction: 'interaction',
+    Navigation: 'navigation',
+    Network: 'network',
+    LocalData: 'localData',
+    Instrumentation: 'instrumentation',
+    UserDefined: 'userDefined',
+  }),
+  EventType: Object.freeze({
+    Track: 'track',
+    Page: 'page',
+    Screen: 'screen',
+    Identify: 'identify',
+    Group: 'group',
+    Alias: 'alias',
+  }),
+  NavigationAction: Object.freeze({
+    URLChange: 'urlChange',
+    PageLoad: 'pageLoad',
+  }),
+}