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node_modules/apollo-link/lib/link.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+var tslib_1 = require("tslib");
+var zen_observable_ts_1 = tslib_1.__importDefault(require("zen-observable-ts"));
+var ts_invariant_1 = require("ts-invariant");
+var linkUtils_1 = require("./linkUtils");
+function passthrough(op, forward) {
+    return forward ? forward(op) : zen_observable_ts_1.default.of();
+}
+function toLink(handler) {
+    return typeof handler === 'function' ? new ApolloLink(handler) : handler;
+}
+function empty() {
+    return new ApolloLink(function () { return zen_observable_ts_1.default.of(); });
+}
+exports.empty = empty;
+function from(links) {
+    if (links.length === 0)
+        return empty();
+    return links.map(toLink).reduce(function (x, y) { return x.concat(y); });
+}
+exports.from = from;
+function split(test, left, right) {
+    var leftLink = toLink(left);
+    var rightLink = toLink(right || new ApolloLink(passthrough));
+    if (linkUtils_1.isTerminating(leftLink) && linkUtils_1.isTerminating(rightLink)) {
+        return new ApolloLink(function (operation) {
+            return test(operation)
+                ? leftLink.request(operation) || zen_observable_ts_1.default.of()
+                : rightLink.request(operation) || zen_observable_ts_1.default.of();
+        });
+    }
+    else {
+        return new ApolloLink(function (operation, forward) {
+            return test(operation)
+                ? leftLink.request(operation, forward) || zen_observable_ts_1.default.of()
+                : rightLink.request(operation, forward) || zen_observable_ts_1.default.of();
+        });
+    }
+}
+exports.split = split;
+exports.concat = function (first, second) {
+    var firstLink = toLink(first);
+    if (linkUtils_1.isTerminating(firstLink)) {
+        ts_invariant_1.invariant.warn(new linkUtils_1.LinkError("You are calling concat on a terminating link, which will have no effect", firstLink));
+        return firstLink;
+    }
+    var nextLink = toLink(second);
+    if (linkUtils_1.isTerminating(nextLink)) {
+        return new ApolloLink(function (operation) {
+            return firstLink.request(operation, function (op) { return nextLink.request(op) || zen_observable_ts_1.default.of(); }) || zen_observable_ts_1.default.of();
+        });
+    }
+    else {
+        return new ApolloLink(function (operation, forward) {
+            return (firstLink.request(operation, function (op) {
+                return nextLink.request(op, forward) || zen_observable_ts_1.default.of();
+            }) || zen_observable_ts_1.default.of());
+        });
+    }
+};
+var ApolloLink = (function () {
+    function ApolloLink(request) {
+        if (request)
+            this.request = request;
+    }
+    ApolloLink.prototype.split = function (test, left, right) {
+        return this.concat(split(test, left, right || new ApolloLink(passthrough)));
+    };
+    ApolloLink.prototype.concat = function (next) {
+        return exports.concat(this, next);
+    };
+    ApolloLink.prototype.request = function (operation, forward) {
+        throw new ts_invariant_1.InvariantError('request is not implemented');
+    };
+    ApolloLink.empty = empty;
+    ApolloLink.from = from;
+    ApolloLink.split = split;
+    ApolloLink.execute = execute;
+    return ApolloLink;
+}());
+exports.ApolloLink = ApolloLink;
+function execute(link, operation) {
+    return (link.request(linkUtils_1.createOperation(operation.context, linkUtils_1.transformOperation(linkUtils_1.validateOperation(operation)))) || zen_observable_ts_1.default.of());
+}
+exports.execute = execute;
+//# sourceMappingURL=link.js.map