@temporalio/workflow/lib/trigger.js

Temporal.io SDK Workflow sub-package

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Trigger = void 0;
const cancellation_scope_1 = require("./cancellation-scope");
const stack_helpers_1 = require("./stack-helpers");
/**
 * A `PromiseLike` helper which exposes its `resolve` and `reject` methods.
 *
 * Trigger is CancellationScope-aware: it is linked to the current scope on
 * construction and throws when that scope is cancelled.
 *
 * Useful for e.g. waiting for unblocking a Workflow from a Signal.
 *
 * @example
 * <!--SNIPSTART typescript-trigger-workflow-->
 * <!--SNIPEND-->
 */
class Trigger {
    constructor() {
        this.promise = new Promise((resolve, reject) => {
            const scope = cancellation_scope_1.CancellationScope.current();
            if (scope.cancellable) {
                (0, stack_helpers_1.untrackPromise)(scope.cancelRequested.catch(reject));
            }
            // eslint-disable-next-line @typescript-eslint/ban-ts-comment
            // @ts-ignore
            this.resolve = resolve;
            // eslint-disable-next-line @typescript-eslint/ban-ts-comment
            // @ts-ignore
            this.reject = reject;
        });
        // Avoid unhandled rejections
        (0, stack_helpers_1.untrackPromise)(this.promise.catch(() => undefined));
    }
    then(onfulfilled, onrejected) {
        return this.promise.then(onfulfilled, onrejected);
    }
}
exports.Trigger = Trigger;
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