web-streams-extensions/dist/cjs/empty.cjs

A comprehensive collection of helper methods for WebStreams with built-in backpressure support, inspired by ReactiveExtensions

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.empty = empty;
/**
 * Creates a ReadableStream that immediately completes without emitting any values.
 * Useful for conditional logic and as a base case in stream operations.
 *
 * @template T The type of values the stream would emit (never actually emitted)
 * @returns A ReadableStream that completes immediately
 *
 * @example
 * ```typescript
 * // Use in conditional logic
 * const stream = condition ? from([1, 2, 3]) : empty();
 *
 * // Always completes immediately
 * const result = await toArray(empty()); // []
 * ```
 */
function empty() {
    return new ReadableStream({
        start(controller) {
            controller.close();
        }
    });
}