bun-ws-router/dist/shared/publish.js

Lightweight client/server WebSocket router for Bun with type-safe Zod/Valibot validation.

// SPDX-FileCopyrightText: 2025-present Kriasoft
// SPDX-License-Identifier: MIT
/**
 * Generic publish function that works with any validator adapter.
 *
 * ARCHITECTURE: This shared implementation is used internally by the router.
 * Public APIs (zod/publish and valibot/publish) provide type-safe wrappers.
 *
 * NOTE: Accepts either Server or ServerWebSocket for flexibility in usage.
 */
export function publishWithValidator(validator, server, topic, schema, messageType, // Pre-extracted to avoid adapter-specific logic
// eslint-disable-next-line @typescript-eslint/no-explicit-any
payload, 
// eslint-disable-next-line @typescript-eslint/no-explicit-any
meta = {}) {
    try {
        // Create the message object with the required structure
        // DIFFERENCE: No clientId here - that's added in the public APIs
        const message = {
            type: messageType,
            meta: {
                timestamp: Date.now(),
                ...meta,
            },
            ...(payload !== undefined && { payload }), // Omit payload key if undefined
        };
        // Validate the constructed message against the schema
        // DELEGATION: Uses adapter's safeParse to handle validator differences
        const validationResult = validator.safeParse(schema, message);
        if (!validationResult.success) {
            console.error(`[ws] Failed to publish message of type "${messageType}": Validation error`, validationResult.error);
            return false;
        }
        // Publish the validated message
        // NOTE: Both Server and ServerWebSocket have .publish() method
        server.publish(topic, JSON.stringify(validationResult.data));
        return true;
    }
    catch (error) {
        // Generic error handler - adapter errors should be caught upstream
        console.error(`[ws] Error publishing message:`, error);
        return false;
    }
}
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