JavaScript SDK 리포지토리 가이드

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

import { initialize, openSession, changeUser } from '@braze/javascript-sdk';

await initialize({
  apiKey,
  baseUrl,
  options,
  sdkMetadata,
  deviceInfo,
  storageManager,
  networkManager,
});

await changeUser(userId);

await openSession();

1
2
3
4
5

import { initialize, logPurchase, changeUser } from '@braze/javascript-sdk';

await initialize({ apiKey, baseUrl, options, ... });
await changeUser('user-123');
await logPurchase('sku-1', 9.99, 'USD', 1);

1
2
3
4
5
6

interface StorageManager {
  store(key: string, value: string, isId?: boolean): Promise<void>;
  remove(key: string, isId?: boolean): Promise<void>;
  retrieve(key: string, isId?: boolean): Promise<string | null>;
  clearData(storageKeys: string[]): Promise<void>;
}

1
2
3
4
5
6
7

interface NetworkManager {
  postRequest(
    url: string,
    data: Partial<Record<string, unknown>>,
    headers?: globalThis.Headers | [string, string][]
  ): Promise<Partial<Record<string, unknown>>>;
}

1
2
3
4
5
6
7
8
9
10

interface PushManager {
  isPushBlocked(): boolean | undefined;
  isPushPermissionGranted(): boolean | undefined;
  isPushSupported(): boolean | undefined;
  registerPush(
    successCallback?: (endpoint: string, publicKey: string, userAuth: string) => void,
    deniedCallback?: (temporaryDenial: boolean) => void,
  ): void;
  unregisterPush(successCallback?: () => void, errorCallback?: () => void): void;
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94

import {
  initialize,
  openSession,
  changeUser,
  logCustomEvent,
  type StorageManager,
  type DeviceInfo
} from '@braze/javascript-sdk';

// Implement required StorageManager interface (in-memory only; does not persist data).
// This example treats all keys equally and ignores the isId parameter
// See "Complete StorageManager implementation with IndexedDB" below for an
// example where we properly handle isId
class InMemoryStorageManager implements StorageManager {
  private storage = new Map<string, string>();

  async store(key: string, value: string, isId?: boolean): Promise<void> {
    this.storage.set(key, value);
  }

  async retrieve(key: string, isId?: boolean): Promise<string | null> {
    return this.storage.get(key) ?? null;
  }

  async remove(key: string, isId?: boolean): Promise<void> {
    this.storage.delete(key);
  }

  async clearData(storageKeys: string[]): Promise<void> {
    for (const key of storageKeys) {
      this.storage.delete(key);
    }
  }
}

const storageManager: StorageManager = new InMemoryStorageManager();

// Provide device information (use your platform's APIs for non-browser)
const deviceInfo: DeviceInfo = {
  os: 'my-runtime-os',
  language: 'en',
  timezone: 'UTC',
  browser: 'Chrome', // Optional
  browserVersion: '120', // Optional
  userAgent: "some-user-agent" // Optional
};

// Browser-only example (uncomment and adapt if you are running in a web browser)
// const deviceInfo: DeviceInfo = {
//   os: navigator.platform || 'Unknown',
//   language: navigator.language || 'en',
//   timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
//   browser: 'Chrome', // Optional
//   browserVersion: '120', // Optional
//   userAgent: navigator.userAgent // Optional
// };

// Initialize SDK
try {
  const initialized = await initialize({
    apiKey: 'YOUR-API-KEY-HERE',
    baseUrl: 'sdk.iad-01.braze.com', // Your Braze SDK endpoint
    options: {
      sdkVersion: '1.0.0',
      enableLogging: true, // Remove in production
      sessionTimeoutInSeconds: 1800, // 30 minutes
      flushIntervalInSeconds: 10
    },
    sdkMetadata: ['npm'], // Identify your platform
    deviceInfo,
    storageManager
  });

  if (!initialized) {
    console.error('Failed to initialize Braze SDK');
    return;
  }

  // Identify user (wait for promise to resolve)
  await changeUser('user-123');

  // Open session (must be after changeUser)
  const isNewSession = await openSession();
  console.log('Session opened:', isNewSession ? 'new' : 'resumed');

  // Log events
  await logCustomEvent('app_opened', {
    source: 'homepage',
    timestamp: new Date().toISOString()
  });

} catch (error) {
  console.error('Braze SDK error:', error);
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130

import type { StorageManager } from '@braze/javascript-sdk';

class IndexedDBStorageManager implements StorageManager {
  private dbName = 'braze-storage';
  private storeName = 'braze-ids';
  private memoryCache = new Map<string, string>();
  private db: IDBDatabase | null = null;
  private dbInitPromise: Promise<void> | null = null;

  private async initDB(): Promise<void> {
    return new Promise((resolve, reject) => {
      const request = indexedDB.open(this.dbName, 1);
      request.onerror = () => reject(request.error);
      request.onsuccess = () => {
        this.db = request.result;
        resolve();
      };
      request.onupgradeneeded = (event) => {
        const db = (event.target as IDBOpenDBRequest).result;
        if (!db.objectStoreNames.contains(this.storeName)) {
          db.createObjectStore(this.storeName);
        }
      };
    });
  }

  private async ensureDB(): Promise<void> {
    if (this.dbInitPromise !== null) {
      return this.dbInitPromise;
    }
    this.dbInitPromise = this.initDB();
    return this.dbInitPromise;
  }

  async store(key: string, value: string, isId?: boolean): Promise<void> {
    await this.ensureDB();
    this.memoryCache.set(key, value);

    if (isId && this.db) {
      try {
        const transaction = this.db.transaction([this.storeName], 'readwrite');
        const store = transaction.objectStore(this.storeName);
        await new Promise<void>((resolve, reject) => {
          const request = store.put(value, key);
          request.onsuccess = () => resolve();
          request.onerror = () => reject(request.error);
        });
      } catch (error) {
        console.error('Failed to store ID in IndexedDB:', error);
      }
    }
  }

  async retrieve(key: string, isId?: boolean): Promise<string | null> {
    await this.ensureDB();
    if (this.memoryCache.has(key)) {
      return this.memoryCache.get(key) || null;
    }

    if (isId && this.db) {
      try {
        const transaction = this.db.transaction([this.storeName], 'readonly');
        const store = transaction.objectStore(this.storeName);
        return new Promise<string | null>((resolve, reject) => {
          const request = store.get(key);
          request.onsuccess = () => {
            const value = request.result;
            if (value) {
              this.memoryCache.set(key, value);
            }
            resolve(value || null);
          };
          request.onerror = () => reject(request.error);
        });
      } catch (error) {
        console.error('Failed to retrieve ID from IndexedDB:', error);
        return null;
      }
    }

    return null;
  }

  async remove(key: string, isId?: boolean): Promise<void> {
    await this.ensureDB();
    this.memoryCache.delete(key);

    if (isId && this.db) {
      try {
        const transaction = this.db.transaction([this.storeName], 'readwrite');
        const store = transaction.objectStore(this.storeName);
        await new Promise<void>((resolve, reject) => {
          const request = store.delete(key);
          request.onsuccess = () => resolve();
          request.onerror = () => reject(request.error);
        });
      } catch (error) {
        console.error('Failed to remove ID from IndexedDB:', error);
      }
    }
  }

  async clearData(storageKeys: string[]): Promise<void> {
    await this.ensureDB();
    for (const key of storageKeys) {
      this.memoryCache.delete(key);
    }

    if (this.db) {
      try {
        const transaction = this.db.transaction([this.storeName], 'readwrite');
        const store = transaction.objectStore(this.storeName);
        await Promise.all(
          storageKeys.map(
            (key) =>
              new Promise<void>((resolve, reject) => {
                const request = store.delete(key);
                request.onsuccess = () => resolve();
                request.onerror = () => reject(request.error);
              })
          )
        );
      } catch (error) {
        console.error('Failed to clear data from IndexedDB:', error);
      }
    }
  }
}

const storageManager = new IndexedDBStorageManager();

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

import type { NetworkManager } from '@braze/javascript-sdk';

function logRequest(url: string, data: Partial<Record<string, unknown>>): void {
  // Send to your analytics, monitoring, or logging backend
  console.log('Braze SDK request', { url, data });
}

class LoggingNetworkManager implements NetworkManager {
  async postRequest(
    url: string,
    data: Partial<Record<string, unknown>>,
    headers?: Headers | [string, string][]
  ): Promise<Partial<Record<string, unknown>>> {
    logRequest(url, data);

    const requestHeaders = new Headers(headers);
    requestHeaders.set('Content-Type', 'application/json');

    const response = await fetch(url, {
      method: 'POST',
      headers: requestHeaders,
      body: JSON.stringify(data),
    });

    const result = await response.json();
    return result as Partial<Record<string, unknown>>;
  }
}

const networkManager = new LoggingNetworkManager();

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73

import {
  getUserId,
  logCustomEvent,
  initialize,
} from '@braze/javascript-sdk';

// Pattern 1: Check for undefined (SDK not initialized)
async function getDevice() {
  const deviceId = await getDeviceId();
  if (deviceId === undefined) {
    console.warn('SDK not initialized');
    return null;
  }
  return deviceId;
}

// Pattern 2: Try-catch for methods that may throw
async function logEventSafely() {
  try {
    const success = await logCustomEvent('button_clicked', { button: 'submit' });
    if (success === undefined) {
      console.warn('SDK not initialized, event not logged');
    } else if (success) {
      console.log('Event logged successfully');
    } else {
      console.warn('Event failed to enqueue');
    }
  } catch (error) {
    console.error('Error logging event:', error);
    // Handle error (e.g., retry, queue for later)
  }
}

// Pattern 3: Handle null vs undefined distinction
async function checkUser() {
  const userId = await getUserId();

  if (userId === undefined) {
    // SDK not initialized
    console.warn('SDK not initialized');
  } else if (userId === null) {
    // Current user is anonymous
    console.log('Current user is anonymous');
  } else {
    // User is identified
    console.log(`User ID is ${userId}`);
  }
}

// Pattern 4: Handle initialization errors
async function initializeSafely() {
  try {
    const initialized = await initialize({
      apiKey: 'YOUR-API-KEY',
      baseUrl: 'sdk.iad-01.braze.com',
      options: { sdkVersion: '1.0.0' },
      sdkMetadata: ['npm'],
      deviceInfo: { os: 'iOS', language: 'en', timezone: 'UTC' },
      storageManager: myStorageManager
    });

    if (!initialized) {
      console.error('Failed to initialize SDK');
      // Check if already initialized, disabled, or validation failed
      return false;
    }

    return true;
  } catch (error) {
    console.error('Initialization error:', error);
    return false;
  }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

import {
  ControlMessage,
  logInAppMessageImpression,
  removeSubscription,
  subscribeToInAppMessage,
} from '@braze/javascript-sdk';

const displayMessage = (inAppMessage) => {
  // Add custom code to display in-app messages
}

// Subscribe to in-app messages
const subscriptionId = subscribeToInAppMessage((inAppMessage) => {
  if (inAppMessage instanceof ControlMessage) {
    return; // Skip control messages
  }

  displayMessage(inAppMessage);

  logInAppMessageImpression(inAppMessage);
});

// Later, remove subscription if it was successfully created
if (subscriptionId) {
  removeSubscription(subscriptionId);
}

1
2
3
4

import { destroy, initialize } from '@braze/javascript-sdk';

destroy();
await initialize({ /* new config */ });

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

import {
  changeUser,
  setCustomUserAttribute,
  setUserEmail,
  setUserFirstName,
  setUserLastName,
} from '@braze/javascript-sdk';

// Identify user
await changeUser('user-123');

// Set standard attributes
await setUserEmail('[email protected]');
await setUserFirstName('John');
await setUserLastName('Doe');

// Set custom attributes
await setCustomUserAttribute('subscription_tier', 'premium');
await setCustomUserAttribute('last_login', new Date());
await setCustomUserAttribute('tags', ['vip', 'early-adopter']);

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

import {
  logCustomEvent,
  logPurchase,
  requestImmediateDataFlush,
} from '@braze/javascript-sdk';

await logCustomEvent('product_viewed', {
  product_id: '123',
  category: 'electronics',
  price: 99.99
});

await logPurchase('product-123', 99.99, 'USD', 1, {
  category: 'electronics'
});

// Flushing these events to the server will happen periodically,
// however you can manually trigger a flush if necessary
requestImmediateDataFlush((success) => {
  console.log('Data flushed:', success);
});

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

import {
  ControlMessage,
  logInAppMessageImpression,
  subscribeToInAppMessage,
} from '@braze/javascript-sdk';

const displayInAppMessage = async (inAppMessage) => {
  // Add custom code to display in-app messages
}

subscribeToInAppMessage(async (inAppMessage) => {
  if (inAppMessage instanceof ControlMessage) {
    return;
  }

  await displayInAppMessage(inAppMessage);

  await logInAppMessageImpression(inAppMessage);
});