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"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.withCost = exports.make = void 0; var Duration = _interopRequireWildcard(require("../Duration.js")); var Effect = _interopRequireWildcard(require("../Effect.js")); var FiberRef = _interopRequireWildcard(require("../FiberRef.js")); var _Function = require("../Function.js"); var _GlobalValue = require("../GlobalValue.js"); function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); } /** @internal */ const make = ({ algorithm = "token-bucket", interval, limit }) => { switch (algorithm) { case "fixed-window": { return fixedWindow(limit, interval); } case "token-bucket": { return tokenBucket(limit, interval); } } }; exports.make = make; const tokenBucket = (limit, window) => Effect.gen(function* () { const millisPerToken = Math.ceil(Duration.toMillis(window) / limit); const semaphore = yield* Effect.makeSemaphore(limit); const latch = yield* Effect.makeSemaphore(0); const refill = Effect.sleep(millisPerToken).pipe(Effect.zipRight(latch.releaseAll), Effect.zipRight(semaphore.release(1)), Effect.flatMap(free => free === limit ? Effect.void : refill)); yield* (0, _Function.pipe)(latch.take(1), Effect.zipRight(refill), Effect.forever, Effect.forkScoped, Effect.interruptible); const take = Effect.uninterruptibleMask(restore => Effect.flatMap(FiberRef.get(currentCost), cost => Effect.zipRight(restore(semaphore.take(cost)), latch.release(1)))); return effect => Effect.zipRight(take, effect); }); const fixedWindow = (limit, window) => Effect.gen(function* () { const semaphore = yield* Effect.makeSemaphore(limit); const latch = yield* Effect.makeSemaphore(0); yield* (0, _Function.pipe)(latch.take(1), Effect.zipRight(Effect.sleep(window)), Effect.zipRight(latch.releaseAll), Effect.zipRight(semaphore.releaseAll), Effect.forever, Effect.forkScoped, Effect.interruptible); const take = Effect.uninterruptibleMask(restore => Effect.flatMap(FiberRef.get(currentCost), cost => Effect.zipRight(restore(semaphore.take(cost)), latch.release(1)))); return effect => Effect.zipRight(take, effect); }); /** @internal */ const currentCost = /*#__PURE__*/(0, _GlobalValue.globalValue)(/*#__PURE__*/Symbol.for("effect/RateLimiter/currentCost"), () => FiberRef.unsafeMake(1)); /** @internal */ const withCost = cost => Effect.locally(currentCost, cost); exports.withCost = withCost; //# sourceMappingURL=rateLimiter.js.map