Simplify everything

Author: Twixes

.eslintrc.js

@@ -0,0 +1,28 @@
+// Some internal library function
+async function getRandomNumber() {
+    return 4 // remove this line to get an actual random number from random.org – caution, rate limited to 10 events/s!
+    const response = await fetch(
+        'https://www.random.org/integers/?num=1&min=1&max=1000000000&col=1&base=10&format=plain&rnd=new'
+    )
+    return parseInt(await response.text())
+}
+
+async function setupPlugin({ config }) {
+    console.log(`Setting up the plugin:\n${config.greeting}`)
+}
+
+async function processEvent(event, { config, cache }) {
+    const counterValue = (await cache.get('greeting_counter', 0))
+    cache.set('greeting_counter', counterValue + 1)
+    if (!event.properties) event.properties = {}
+    event.properties['greeting'] = config.greeting
+    event.properties['greeting_counter'] = counterValue
+    event.properties['random_number'] = await getRandomNumber()
+    return event
+}
+
+// The famed Hello World plugin itself
+module.exports = {
+    setupPlugin,
+    processEvent
+}

.github/pull_request_template.md

@@ -1,60 +1,60 @@
-const { createEvent, createIdentify, getMeta, resetMeta, clone } = require('@posthog/plugin-scaffold/test/utils')
+const { createEvent, createIdentify, getMeta, resetMeta, clone } = require("@posthog/plugin-scaffold/test/utils");
 
-const { processEvent } = require('..')
+const { processEvent } = require(".");
 
 beforeEach(() => {
     resetMeta({
         config: {
-            greeting: 'Dzień dobry!',
+            greeting: "Dzień dobry!",
         },
-    })
-})
+    });
+});
 
-test('processEvent adds properties', async () => {
+test("processEvent adds properties", async () => {
     // create a random event
-    const event0 = createEvent({ event: 'booking completed', properties: { amount: '20', currency: 'USD' } })
+    const event0 = createEvent({ event: "booking completed", properties: { amount: "20", currency: "USD" } });
 
     // must clone the event since `processEvent` will mutate it otherwise
-    const event1 = await processEvent(clone(event0), getMeta())
+    const event1 = await processEvent(clone(event0), getMeta());
     expect(event1).toEqual({
         ...event0,
         properties: {
             ...event0.properties,
-            greeting: 'Dzień dobry!',
+            greeting: "Dzień dobry!",
             greeting_counter: 0,
             random_number: 4,
         },
-    })
+    });
 
-    const event2 = await processEvent(clone(event0), getMeta())
+    const event2 = await processEvent(clone(event0), getMeta());
     expect(event2).toEqual({
         ...event1,
         properties: {
             ...event1.properties,
             greeting_counter: 1,
         },
-    })
+    });
 
-    const event3 = await processEvent(clone(event0), getMeta())
+    const event3 = await processEvent(clone(event0), getMeta());
     expect(event3).toEqual({
         ...event2,
         properties: {
             ...event2.properties,
             greeting_counter: 2,
         },
-    })
-})
+    });
+});
 
-test('processEvent does not crash with identify', async () => {
+test("processEvent does not crash with identify", async () => {
     const defaultHelloWorldProperties = Object.freeze({
-        greeting: 'Dzień dobry!',
+        greeting: "Dzień dobry!",
         greeting_counter: 0,
         random_number: 4,
-    })
+    });
     // create a random event
-    const event0 = createIdentify()
+    const event0 = createIdentify();
     // must clone the event since `processEvent` will mutate it otherwise
-    const { properties, ...restOfEvent1 } = await processEvent(clone(event0), getMeta())
-    expect(restOfEvent1).toEqual(event0)
-    expect(properties).toEqual(defaultHelloWorldProperties)
-})
+    const { properties, ...restOfEvent1 } = await processEvent(clone(event0), getMeta());
+    expect(restOfEvent1).toEqual(event0);
+    expect(properties).toEqual(defaultHelloWorldProperties);
+});

.github/workflows/ci.yml

@@ -1,13 +1,3 @@
-const { pathsToModuleNameMapper } = require('ts-jest/utils')
-const { compilerOptions } = require('./tsconfig')
-
-const moduleNameMapper = undefined
-if (compilerOptions.paths) {
-    moduleNameMapper = pathsToModuleNameMapper(compilerOptions.paths, { prefix: 'src/' })
-}
-
 module.exports = {
-    preset: 'ts-jest',
-    testEnvironment: 'node',
-    moduleNameMapper,
-}
+    testEnvironment: "node",
+};