counterfact/dist/server/openapi-watcher.js

Generate a TypeScript-based mock server from an OpenAPI spec in seconds — with stateful routes, hot reload, and REPL support.

import { watch } from "chokidar";
import createDebug from "debug";
import { waitForEvent } from "../util/wait-for-event.js";
import { CHOKIDAR_OPTIONS } from "./constants.js";
import { loadOpenApiDocument } from "./load-openapi-document.js";
const debug = createDebug("counterfact:server:openapi-watcher");
export class OpenApiWatcher {
    openApiPath;
    dispatcher;
    watcher;
    constructor(openApiPath, dispatcher) {
        this.openApiPath = openApiPath;
        this.dispatcher = dispatcher;
    }
    async watch() {
        if (this.openApiPath === "_" || this.openApiPath.startsWith("http")) {
            return;
        }
        this.watcher = watch(this.openApiPath, CHOKIDAR_OPTIONS).on("change", () => {
            void (async () => {
                try {
                    this.dispatcher.openApiDocument = await loadOpenApiDocument(this.openApiPath);
                    debug("reloaded OpenAPI document from %s", this.openApiPath);
                }
                catch (error) {
                    debug("failed to reload OpenAPI document from %s: %o", this.openApiPath, error);
                }
            })();
        });
        await waitForEvent(this.watcher, "ready");
    }
    async stopWatching() {
        await this.watcher?.close();
    }
}