Jon Staab
536 lines
21 KiB
Markdown
536 lines
21 KiB
Markdown
---
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name: welshman-app
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description: Use this skill when working with @welshman/app: high-level Svelte stores for nostr apps, session management, WoT (web of trust), making requests, publishing events, user data, or relay selection at the app layer.
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---
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# welshman/app — Application Layer Stores
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`@welshman/app` is the top-level application framework in the welshman stack. It wires together `@welshman/net` (subscriptions/publishing), `@welshman/store` (reactive collections), `@welshman/router` (relay selection), and `@welshman/signer` (key management) into ready-to-use Svelte stores and high-level utilities. It powers production apps like Coracle and Flotilla.
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## Installation
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```bash
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npm install @welshman/app
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# or
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pnpm add @welshman/app
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yarn add @welshman/app
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```
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## Key Exports
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### Core Singletons
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| Export | Description |
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|---|---|
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| `repository` | Singleton `Repository` from `@welshman/net`; non-DVM, non-ephemeral events received from the pool are stored here. WRAP (NIP-59) events are handled separately via `unwrapAndStore` and require `shouldUnwrap` to be set to `true` to process. |
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| `tracker` | Singleton `Tracker`; maps event IDs to the relays they were seen on |
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### Session Management
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| Export | Description |
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|---|---|
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| `pubkey` | `Writable<string \| undefined>` — active session's pubkey |
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| `session` | `Readable<Session \| undefined>` — derived from `pubkey` + `sessions` |
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| `sessions` | `Writable<Record<string, Session>>` — all loaded sessions |
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| `signer` | `Readable<ISigner \| undefined>` — signer for the active session |
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| `signerLog` | `WritableWithGetter<SignerLogEntry[]>` — writable store that the session layer appends signer-operation entries to (useful for UI feedback during remote signing) |
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| `SessionMethod` | Enum: `Nip01`, `Nip07`, `Nip46`, `Nip55`, `Pomade`, `Pubkey`, `Anonymous` |
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**Login functions** (all call `addSession` internally):
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```typescript
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loginWithNip01(secret: string): void
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loginWithNip07(pubkey: string): void
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loginWithNip46(pubkey, clientSecret, signerPubkey, relays): void
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loginWithNip55(pubkey: string, signerPackageName: string): void
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loginWithPomade(pubkey, email, clientOptions): void
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loginWithPubkey(pubkey: string): void // read-only
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```
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**Session utilities**:
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```typescript
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addSession(session: Session): void // add and activate
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dropSession(pubkey: string): void // remove and clean up signer
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getSession(pubkey: string): Session | undefined
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updateSession(pubkey, fn): void
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clearSessions(): void
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nip46Perms: string // default NIP-46 permission string
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```
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**Gift wrap (NIP-59)**:
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```typescript
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shouldUnwrap: Writable<boolean> // must be true to process incoming wraps
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wrapManager: WrapManager // tracks wrap↔rumor mappings
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unwrapAndStore(wrap: SignedEvent): Promise<void>
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```
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### Publishing — Thunks
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| Export | Description |
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|---|---|
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| `publishThunk(options: ThunkOptions): Thunk` | Create, enqueue, and optimistically publish an event |
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| `Thunk` | Class representing a single in-flight publish |
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| `MergedThunk` | Aggregates multiple `Thunk`s (used by `sendWrapped`) |
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| `thunks` | `Writable<Thunk[]>` — all active thunks |
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| `abortThunk(thunk)` | Abort all constituent thunks |
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| `retryThunk(thunk)` | Re-publish with original options |
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| `mergeThunks(thunks[])` | Combine into a `MergedThunk` |
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**Thunk status helpers**:
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```typescript
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thunkIsComplete(thunk): boolean
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getThunkError(thunk): string | undefined
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getThunkUrlsWithStatus(statuses, thunk): string[]
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getCompleteThunkUrls(thunk): string[]
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getFailedThunkUrls(thunk): string[]
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waitForThunkError(thunk): Promise<string>
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waitForThunkCompletion(thunk): Promise<void>
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```
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`ThunkOptions`:
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```typescript
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type ThunkOptions = {
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event: EventTemplate // unsigned — will be signed lazily
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relays: string[]
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recipient?: string // if set, event is NIP-59 gift-wrapped
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delay?: number // ms to wait before sending (abort window)
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pow?: number // proof-of-work difficulty target
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timeout?: number // ms per relay before marking as timed out
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// PublishOptions callbacks: onSuccess, onFailure, onPending, onTimeout, onAborted, onComplete
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}
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```
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### Commands (Higher-level Thunk Factories)
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Most return a `Thunk` (or `Promise<Thunk>`). They automatically load the relevant user list before modifying it. Exception: `manageRelay` returns `Promise<Response>` (an HTTP response from the NIP-86 management endpoint), not a Thunk.
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| Export | Description |
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|---|---|
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| `setProfile(profile: Profile)` | Publish NIP-01 profile metadata |
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| `follow(tag: string[])` | Add to NIP-02 follow list |
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| `unfollow(value: string)` | Remove from follow list |
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| `mutePublicly(tag)` | Add to public mute list |
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| `mutePrivately(tag)` | Add to private (encrypted) mute list |
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| `unmute(value)` | Remove from mute list |
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| `setMutes({publicTags?, privateTags?})` | Replace entire mute list |
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| `pin(tag)` / `unpin(value)` | Manage pin list |
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| `addRelay(url, mode)` / `removeRelay(url, mode)` | NIP-65 relay list management |
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| `setRelays(tags)` / `setReadRelays(urls)` / `setWriteRelays(urls)` | Bulk relay list updates |
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| `addMessagingRelay(url)` / `removeMessagingRelay(url)` | NIP-17 messaging relay list |
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| `addBlockedRelay(url)` / `removeBlockedRelay(url)` | Blocked relay list |
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| `addSearchRelay(url)` / `removeSearchRelay(url)` | Search relay list |
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| `sendWrapped({event, recipients, ...options})` | NIP-59 gift-wrap to multiple recipients |
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| `manageRelay(url, request)` | NIP-86 relay management |
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| `createRoom` / `editRoom` / `deleteRoom` / `joinRoom` / `leaveRoom` | NIP-29 group room management |
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### Profiles
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```typescript
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profilesByPubkey: Readable<Map<string, Profile>>
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profiles: Readable<Profile[]>
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getProfile(pubkey: string): Profile | undefined
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loadProfile(pubkey, relayHints?): Promise<void>
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forceLoadProfile(pubkey, relayHints?): Promise<void>
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deriveProfile(pubkey: string): Readable<Profile | undefined> // auto-loads
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deriveProfileDisplay(pubkey: string): Readable<string> // display name with fallback
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displayProfileByPubkey(pubkey: string): string // synchronous
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```
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### Follow / Mute / Pin Lists
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Each list type follows the same pattern (`follow` shown, `mute` and `pin` are identical):
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```typescript
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followListsByPubkey: Readable<Map<string, List>>
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followLists: Readable<List[]>
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getFollowList(pubkey): List | undefined
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loadFollowList(pubkey, relayHints?): Promise<void>
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forceLoadFollowList(pubkey, relayHints?): Promise<void>
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deriveFollowList(pubkey): Readable<List | undefined>
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```
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### Relay Lists
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```typescript
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// NIP-65 relay lists
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relayListsByPubkey / relayLists / getRelayList / loadRelayList / deriveRelayList
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// NIP-17 messaging relay lists
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messagingRelayListsByPubkey / messagingRelayLists / getMessagingRelayList / loadMessagingRelayList / deriveMessagingRelayList
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// Blocked relay lists
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blockedRelayListsByPubkey / getBlockedRelayList / loadBlockedRelayList / deriveBlockedRelayList
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// Search relay lists (internal only — not exported from @welshman/app)
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// Use userSearchRelayList / loadUserSearchRelayList / forceLoadUserSearchRelayList from user.ts instead
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```
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### Outbox Loading
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`makeOutboxLoader` creates a loader function for any event kind. It looks up the target pubkey's relay list (fetching it if needed), then fetches events from their write relays using the outbox model. This is the internal mechanism used by all built-in `loadX` helpers.
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```typescript
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import {makeOutboxLoader} from '@welshman/app'
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// Signature: makeOutboxLoader(kind, filter?, limit?)
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// Returns: (pubkey: string, relayHints?: string[]) => Promise<void>
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// Results are stored in repository — read via the derived store/getter, not the return value.
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// Loader for kind 1 notes (default limit = 1)
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const loadNote = makeOutboxLoader(1)
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await loadNote('target-pubkey')
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// With extra filter constraints
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const loadRecentNotes = makeOutboxLoader(1, {since: Math.floor(Date.now() / 1000) - 86400})
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await loadRecentNotes('target-pubkey')
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// Override the limit via the third positional argument (not inside the filter object)
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const loadMany = makeOutboxLoader(1, {}, 20)
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await loadMany('target-pubkey')
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// With relay hints to seed the lookup
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await loadNote('target-pubkey', ['wss://relay.damus.io/'])
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```
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**Relay URL helpers** (exported from index):
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```typescript
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getPubkeyRelays(pubkey: string, mode?: RelayMode): string[]
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derivePubkeyRelays(pubkey: string, mode?: RelayMode): Readable<string[]>
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```
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### User Data Stores (current session)
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These automatically derive from the active `pubkey` and trigger a load on first access:
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```typescript
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userProfile: Readable<Profile | undefined>
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userFollowList: Readable<List | undefined>
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userMuteList: Readable<List | undefined>
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userPinList: Readable<List | undefined>
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userRelayList: Readable<List | undefined>
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userMessagingRelayList: Readable<List | undefined>
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userSearchRelayList: Readable<List | undefined>
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userBlockedRelayList: Readable<List | undefined>
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userBlossomServerList: Readable<List | undefined>
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```
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Corresponding loaders (operate on the current session's pubkey):
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```typescript
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loadUserProfile(relays?)
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forceLoadUserProfile(relays?)
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loadUserFollowList / forceLoadUserFollowList
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loadUserMuteList / forceLoadUserMuteList
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loadUserPinList / forceLoadUserPinList
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loadUserRelayList / forceLoadUserRelayList
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loadUserMessagingRelayList / forceLoadUserMessagingRelayList
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// ...etc for each list type
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```
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### Router
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```typescript
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import {Router, routerContext, addMaximalFallbacks, addMinimalFallbacks} from '@welshman/router'
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// The index.ts wires up routerContext automatically:
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// routerContext.getUserPubkey, getPubkeyRelays, getRelayQuality, getDefaultRelays, etc.
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Router.get() // singleton with app-wired context
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Router.get().FromUser() // relays to publish from the current user
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Router.get().ForPubkey(pubkey) // relays to read a pubkey's events
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Router.get().Event(event) // best relay for a specific event
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Router.get().Index() // indexer/bootstrap relays
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Router.get().FromRelays(urls) // relay set from explicit URLs
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.policy(addMaximalFallbacks) // add fallback relays
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.limit(8)
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.getUrls() // string[]
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.getUrl() // string | undefined (first)
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```
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`routerContext` settings (configure before using router):
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```typescript
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import {routerContext} from '@welshman/router' // from @welshman/router, not @welshman/app
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routerContext.getDefaultRelays = () => ["wss://relay.damus.io/", "wss://nos.lol/"]
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```
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### Tag Utilities
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```typescript
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tagPubkey(pubkey: string): string[] // ["p", pubkey, relayHint, displayName]
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tagEvent(event, url?, mark?): string[][] // e-tag (+ a-tag if replaceable)
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tagEventPubkeys(event): string[][] // p-tags for all mentioned pubkeys (excl. self)
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tagEventForQuote(event, relay?): string[] // q-tag
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tagEventForReply(event, relay?): string[][] // full reply thread tags
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tagEventForComment(event, relay?): string[][]// NIP-22 comment tags
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tagEventForReaction(event, relay?): string[][]// reaction tags
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tagZapSplit(pubkey, split?): string[] // zap tag
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```
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### Web of Trust (WoT)
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```typescript
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// Reactive stores
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followersByPubkey: Readable<Map<string, Set<string>>>
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mutersByPubkey: Readable<Map<string, Set<string>>>
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wotGraph: Writable<Map<string, number>> // pubkey → score; rebuilt on follow/mute changes
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maxWot: Readable<number>
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// Synchronous getters
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getFollows(pubkey): string[]
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getMutes(pubkey): string[]
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getFollowers(pubkey): string[]
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getMuters(pubkey): string[]
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getNetwork(pubkey): string[] // follows-of-follows (excludes direct follows)
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getFollowsWhoFollow(pubkey, target): string[]
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getFollowsWhoMute(pubkey, target): string[]
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getWotScore(pubkey, target): number // follows-who-follow minus follows-who-mute
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// Per-user reactive score
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getUserWotScore(tpk: string): number
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deriveUserWotScore(tpk: string): Readable<number>
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```
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### Handles & Zappers
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```typescript
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handlesByNip05: Writable<Map<string, Handle>>
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deriveHandle(nip05: string): Readable<Handle | undefined> // auto-loads
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loadHandle(nip05): Promise<void>
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zappersByLnurl: Writable<Map<string, Zapper>>
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deriveZapper(lnurl: string): Readable<Zapper | undefined> // auto-loads
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loadZapper(lnurl): Promise<void>
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```
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### Feeds
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```typescript
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import {makeFeedController} from '@welshman/app'
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import {makeKindFeed} from '@welshman/feeds'
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// makeFeedController wraps FeedController with app-level scope/WoT helpers
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const ctrl = makeFeedController({
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feed: makeKindFeed(NOTE),
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useWindowing: true,
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signal: abortController.signal,
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onEvent: (e) => { /* handle event */ },
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onExhausted: () => { /* no more events */ },
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})
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ctrl.load(100)
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abortController.abort()
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```
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WoT-scoped feed helpers (passed automatically to `FeedController`):
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```typescript
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getPubkeysForScope(scope: string): string[] // Scope.Self|Follows|Network|Followers
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getPubkeysForWOTRange(min: number, max: number): string[] // fractional of maxWot
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```
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### Sync (Negentropy)
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```typescript
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import {pull, push, hasNegentropy} from '@welshman/app'
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// pull/push use negentropy if the relay supports it, falling back to plain requests
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await pull({relays, filters})
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await push({relays, filters})
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hasNegentropy(url: string): boolean
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```
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### Application Context
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```typescript
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import {appContext} from '@welshman/app'
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appContext.dufflepudUrl = 'https://my-dufflepud.example.com'
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```
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[Dufflepud](https://github.com/coracle-social/dufflepud) is an optional proxy server for NIP-05 lookups, zapper resolution, relay metadata, and link previews. Not required but helps bypass CORS.
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---
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## Common Patterns
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### Login and publish a note
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```typescript
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import {makeSecret} from '@welshman/util'
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import {loginWithNip07, publishThunk, signer} from '@welshman/app'
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import {Router} from '@welshman/router'
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import {NOTE, makeEvent} from '@welshman/util'
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import {Nip07Signer} from '@welshman/signer'
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// NIP-07 login
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const nip07 = new Nip07Signer()
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const pubkey = await nip07.getPubkey()
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loginWithNip07(pubkey)
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// Publish with optimistic local update and 3s undo window
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const thunk = publishThunk({
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event: makeEvent(NOTE, {content: 'Hello Nostr!'}),
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relays: Router.get().FromUser().getUrls(),
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delay: 3000,
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})
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// Subscribe to per-relay status
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thunk.subscribe($thunk => {
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for (const [url, result] of Object.entries($thunk.results)) {
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console.log(url, result.status, result.detail)
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}
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})
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// Soft-undo within delay window
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setTimeout(() => thunk.controller.abort(), 1000)
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// Wait for all relays to finish (thunk.complete is a Deferred<void>)
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await thunk.complete
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```
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### Derive a reactive profile
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```typescript
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import {deriveProfile, deriveProfileDisplay} from '@welshman/app'
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const targetPubkey = '97c70a44366a6535c145b333f973ea86dfdc2d7a99da618c40c64705ad98e322'
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// Reactive store — loads the profile in the background on first subscribe
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const profile = deriveProfile(targetPubkey)
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// Reactive display name with npub fallback
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const name = deriveProfileDisplay(targetPubkey)
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// In Svelte
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// $: displayName = $name
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```
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### Reply to an event
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```typescript
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import {publishThunk, tagEventForReply, tagPubkey, signer} from '@welshman/app'
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import {Router} from '@welshman/router'
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import {NOTE, makeEvent} from '@welshman/util'
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import type {TrustedEvent} from '@welshman/util'
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async function replyTo(parent: TrustedEvent, content: string) {
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const tags = tagEventForReply(parent)
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return publishThunk({
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event: makeEvent(NOTE, {content, tags}),
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relays: Router.get().PublishEvent(parent).getUrls(),
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})
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}
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```
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### Send a NIP-59 gift-wrapped DM
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```typescript
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import {sendWrapped} from '@welshman/app'
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import {DIRECT_MESSAGE, makeEvent} from '@welshman/util'
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const mergedThunk = await sendWrapped({
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event: makeEvent(DIRECT_MESSAGE, {content: 'secret message'}),
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recipients: [recipientPubkey],
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})
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// Monitor combined status
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mergedThunk.subscribe($t => {
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for (const [url, result] of Object.entries($t.results)) {
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console.log(url, result.status)
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}
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})
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```
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### Follow/unfollow
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```typescript
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import {follow, unfollow} from '@welshman/app'
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// tag format: ["p", pubkey] or ["p", pubkey, relayHint, petname]
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await follow(["p", "97c70a44366a6535c145b333f973ea86dfdc2d7a99da618c40c64705ad98e322"])
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await unfollow("97c70a44366a6535c145b333f973ea86dfdc2d7a99da618c40c64705ad98e322")
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```
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### Web of Trust filtering
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```typescript
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import {deriveUserWotScore, getWotScore, wotGraph, maxWot} from '@welshman/app'
|
||
import {get} from 'svelte/store'
|
||
|
||
// Filter a list of pubkeys to those with positive WoT score
|
||
const $graph = get(wotGraph)
|
||
const trusted = pubkeys.filter(pk => ($graph.get(pk) ?? 0) > 0)
|
||
|
||
// Reactive score for a single user
|
||
const score = deriveUserWotScore(somePubkey)
|
||
|
||
// Normalize by max score (0–1 range)
|
||
const $max = get(maxWot)
|
||
const normalized = ($graph.get(somePubkey) ?? 0) / ($max || 1)
|
||
```
|
||
|
||
### Load a feed of notes
|
||
|
||
```typescript
|
||
import {makeFeedController, getPubkeysForScope} from '@welshman/app'
|
||
import {makeKindFeed} from '@welshman/feeds'
|
||
import {NOTE} from '@welshman/util'
|
||
|
||
const abort = new AbortController()
|
||
|
||
const ctrl = makeFeedController({
|
||
feed: makeKindFeed(NOTE),
|
||
useWindowing: true,
|
||
signal: abort.signal,
|
||
onEvent: event => console.log(event),
|
||
onExhausted: () => console.log('no more events'),
|
||
})
|
||
|
||
ctrl.load(50)
|
||
|
||
// cleanup
|
||
abort.abort()
|
||
```
|
||
|
||
---
|
||
|
||
## Integration Notes
|
||
|
||
- `@welshman/app` **re-exports nothing** from `@welshman/net`, `@welshman/router`, etc. Import those directly when you need low-level primitives (`load`, `request`, `publish`, `Router` scenarios beyond `FromUser`).
|
||
- The `index.ts` bootstrap code runs on import and automatically wires `routerContext` (pubkey relays, relay quality, default/indexer/search relays) and hooks `Pool` to store incoming events in `repository`. **Import `@welshman/app` early in your app entry point** so this runs before any requests. The canonical side-effect import pattern is:
|
||
|
||
```typescript
|
||
// app entry point — must be first, before any @welshman/net or @welshman/router imports
|
||
import "@welshman/app"
|
||
|
||
// Then optionally override defaults
|
||
import {routerContext} from "@welshman/router"
|
||
routerContext.getDefaultRelays = () => ["wss://relay.damus.io/", "wss://nos.lol/"]
|
||
```
|
||
- `repository` and `tracker` are singletons shared across the whole app. All subscriptions made through `@welshman/net` that pass through the pool will populate `repository` automatically.
|
||
- `Router` is imported from `@welshman/router` but `routerContext` is configured by `@welshman/app/index.ts`. Use `Router.get()` (not `new Router(...)`) to get the app-configured singleton.
|
||
- `deriveProfile`, `deriveFollowList`, etc. use `makeLoadItem` under the hood: they fire a network request on first subscribe if data is not already in the repository, then resolve immediately on subsequent subscribes.
|
||
- `userFollowList`, `userMuteList`, etc. are derived from `pubkey`. They automatically re-derive when the active session changes (multi-account support).
|
||
|
||
---
|
||
|
||
## Gotchas & Tips
|
||
|
||
- **Thunks sign lazily.** `publishThunk` returns synchronously and immediately writes an unsigned/hashed event to `repository` for optimistic UI. Actual signing happens in a background queue. Do not assume the event has an `id` suitable for embedding in other events until signing completes.
|
||
- **`delay` is an undo window, not a debounce.** The thunk starts the delay timer immediately; if not aborted before `delay` ms, it signs and publishes. Calling `thunk.controller.abort()` after the delay has elapsed does nothing.
|
||
- **`sendWrapped` uses `recipients`, not `pubkeys`.** The docs example uses `pubkeys` but the actual type is `recipients: string[]`.
|
||
- **Gift wrap processing requires opt-in.** Set `shouldUnwrap.set(true)` to enable automatic NIP-59 unwrapping of incoming `kind:1059` events. Without this, wrapped events are silently discarded.
|
||
- **`commands` force-load lists before modifying them.** `follow()`, `unfollow()`, etc. call `forceLoadUserFollowList` to ensure they have the latest list before adding/removing, preventing accidental list truncation. Do not call these in rapid succession without awaiting each one.
|
||
- **WoT graph is rebuilt at most once per second** (throttled). Do not expect `wotGraph` to reflect a `follow()` call immediately; subscribe to the store instead.
|
||
- **`routerContext.getDefaultRelays` is throttled** with a 200 ms window by default in `index.ts`. It returns up to the 5 highest-quality known relays. Override it before any relay connections if you want a fixed bootstrap list.
|
||
- **Multiple sessions are supported.** Call `loginWith*` multiple times to add sessions. Switch the active session with `pubkey.set(otherPubkey)`. Remove a session with `dropSession(pubkey)` — this also cleans up the cached signer.
|
||
- **Stores have `.get()` via `withGetter`.** `pubkey.get()`, `signer.get()`, `session.get()`, `signerLog.get()`, `shouldUnwrap.get()` all work without `get()` from `svelte/store`. Use this for synchronous reads outside of reactive contexts.
|
||
- **`appContext.dufflepudUrl` must be set before first handle/zapper load.** There is no lazy re-fetch; set it at app startup.
|