| 1 | {"version":3,"file":"batch.cjs","sources":["batching.js","batchLink.js"],"sourcesContent":["import { __assign } from \"tslib\";\nimport { Observable } from '../../utilities';\nvar OperationBatcher = (function () {\n function OperationBatcher(_a) {\n var batchDebounce = _a.batchDebounce, batchInterval = _a.batchInterval, batchMax = _a.batchMax, batchHandler = _a.batchHandler, batchKey = _a.batchKey;\n this.batchesByKey = new Map();\n this.batchDebounce = batchDebounce;\n this.batchInterval = batchInterval;\n this.batchMax = batchMax || 0;\n this.batchHandler = batchHandler;\n this.batchKey = batchKey || (function () { return ''; });\n }\n OperationBatcher.prototype.enqueueRequest = function (request) {\n var _this = this;\n var requestCopy = __assign(__assign({}, request), { next: [], error: [], complete: [], subscribers: new Set() });\n var key = this.batchKey(request.operation);\n if (!requestCopy.observable) {\n requestCopy.observable = new Observable(function (observer) {\n var batch = _this.batchesByKey.get(key);\n if (!batch)\n _this.batchesByKey.set(key, batch = new Set());\n var isFirstEnqueuedRequest = batch.size === 0;\n var isFirstSubscriber = requestCopy.subscribers.size === 0;\n requestCopy.subscribers.add(observer);\n if (isFirstSubscriber) {\n batch.add(requestCopy);\n }\n if (observer.next) {\n requestCopy.next.push(observer.next.bind(observer));\n }\n if (observer.error) {\n requestCopy.error.push(observer.error.bind(observer));\n }\n if (observer.complete) {\n requestCopy.complete.push(observer.complete.bind(observer));\n }\n if (isFirstEnqueuedRequest) {\n _this.scheduleQueueConsumption(key);\n }\n else if (_this.batchDebounce) {\n clearTimeout(_this.scheduledBatchTimer);\n _this.scheduleQueueConsumption(key);\n }\n if (batch.size === _this.batchMax) {\n _this.consumeQueue(key);\n }\n return function () {\n var _a;\n if (requestCopy.subscribers.delete(observer) &&\n requestCopy.subscribers.size < 1) {\n if (batch.delete(requestCopy) && batch.size < 1) {\n _this.consumeQueue(key);\n (_a = batch.subscription) === null || _a === void 0 ? void 0 : _a.unsubscribe();\n }\n }\n };\n });\n }\n return requestCopy.observable;\n };\n OperationBatcher.prototype.consumeQueue = function (key) {\n if (key === void 0) { key = ''; }\n var batch = this.batchesByKey.get(key);\n this.batchesByKey.delete(key);\n if (!batch || !batch.size) {\n return;\n }\n var operations = [];\n var forwards = [];\n var observables = [];\n var nexts = [];\n var errors = [];\n var completes = [];\n batch.forEach(function (request) {\n operations.push(request.operation);\n forwards.push(request.forward);\n observables.push(request.observable);\n nexts.push(request.next);\n errors.push(request.error);\n completes.push(request.complete);\n });\n var batchedObservable = this.batchHandler(operations, forwards) || Observable.of();\n var onError = function (error) {\n errors.forEach(function (rejecters) {\n if (rejecters) {\n rejecters.forEach(function (e) { return e(error); });\n }\n });\n };\n batch.subscription = batchedObservable.subscribe({\n next: function (results) {\n if (!Array.isArray(results)) {\n results = [results];\n }\n if (nexts.length !== results.length) {\n var error = new Error(\"server returned results with length \".concat(results.length, \", expected length of \").concat(nexts.length));\n error.result = results;\n return onError(error);\n }\n results.forEach(function (result, index) {\n if (nexts[index]) {\n nexts[index].forEach(function (next) { return next(result); });\n }\n });\n },\n error: onError,\n complete: function () {\n completes.forEach(function (complete) {\n if (complete) {\n complete.forEach(function (c) { return c(); });\n }\n });\n },\n });\n return observables;\n };\n OperationBatcher.prototype.scheduleQueueConsumption = function (key) {\n var _this = this;\n this.scheduledBatchTimer = setTimeout(function () {\n _this.consumeQueue(key);\n }, this.batchInterval);\n };\n return OperationBatcher;\n}());\nexport { OperationBatcher };\n//# sourceMappingURL=batching.js.map","import { __extends } from \"tslib\";\nimport { ApolloLink } from '../core';\nimport { OperationBatcher } from './batching';\nexport { OperationBatcher } from './batching';\nvar BatchLink = (function (_super) {\n __extends(BatchLink, _super);\n function BatchLink(fetchParams) {\n var _this = _super.call(this) || this;\n var _a = fetchParams || {}, batchDebounce = _a.batchDebounce, _b = _a.batchInterval, batchInterval = _b === void 0 ? 10 : _b, _c = _a.batchMax, batchMax = _c === void 0 ? 0 : _c, _d = _a.batchHandler, batchHandler = _d === void 0 ? function () { return null; } : _d, _e = _a.batchKey, batchKey = _e === void 0 ? function () { return ''; } : _e;\n _this.batcher = new OperationBatcher({\n batchDebounce: batchDebounce,\n batchInterval: batchInterval,\n batchMax: batchMax,\n batchHandler: batchHandler,\n batchKey: batchKey,\n });\n if (fetchParams.batchHandler.length <= 1) {\n _this.request = function (operation) { return _this.batcher.enqueueRequest({ operation: operation }); };\n }\n return _this;\n }\n BatchLink.prototype.request = function (operation, forward) {\n return this.batcher.enqueueRequest({\n operation: operation,\n forward: forward,\n });\n };\n return BatchLink;\n}(ApolloLink));\nexport { BatchLink };\n//# 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