decentralised sync engine
feat: prism helper
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src/lib/utils/prism.ts
+26
src/lib/utils/prism.ts
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// Prism is a jetstream/jetstream-compatible fork for receiving filtered events from the firehose
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import { PRISM_URL } from "@/lib/env";
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import WebSocket from "ws";
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export const connectToPrism = ({
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wantedCollections,
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wantedDids,
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cursor,
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}: {
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wantedCollections?: Array<string>;
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wantedDids?: Array<string>;
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cursor: number;
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}) => {
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const endpoint = PRISM_URL;
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if (wantedCollections)
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wantedCollections.forEach((collection) => {
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endpoint.searchParams.append("wantedCollections", collection);
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});
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if (wantedDids)
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wantedDids.forEach((did) => {
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endpoint.searchParams.append("wantedDids", did);
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});
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if (cursor) endpoint.searchParams.append("cursor", cursor.toString());
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return new WebSocket(endpoint);
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};