bun-ws-router/dist/valibot/adapter.js

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

// SPDX-FileCopyrightText: 2025-present Kriasoft
// SPDX-License-Identifier: MIT
import * as v from "valibot";
/**
 * Adapter that bridges Valibot validation with the generic router implementation.
 * Handles the differences in Valibot's schema structure compared to Zod.
 */
export class ValibotValidatorAdapter {
    // Extract the literal type value used for message routing.
    // COMPLEXITY: Valibot stores the literal value differently than Zod,
    // requiring runtime checks to safely access schema.entries.type.literal.
    getMessageType(schema) {
        const typeSchema = schema.entries.type;
        if (typeSchema && typeSchema.type === "literal") {
            return typeSchema.literal;
        }
        // This should never happen with schemas from messageSchema()
        throw new Error("Schema must have a literal type field");
    }
    // Validate incoming message data and normalize the result format.
    // NOTE: Valibot uses 'output' instead of Zod's 'data' for parsed results.
    // Error format is simpler - just the issues array without prettification.
    safeParse(schema, data) {
        const result = v.safeParse(schema, data);
        return {
            success: result.success,
            data: result.success ? result.output : undefined,
            error: result.success ? undefined : result.issues,
        };
    }
    // Type helper for TypeScript inference - not used at runtime.
    // EXISTS FOR: Satisfying the ValidatorAdapter interface type requirements.
    infer() {
        return {};
    }
}
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