{"version":3,"file":"core.cjs","sources":["ApolloLink.js","empty.js","from.js","split.js","concat.js","execute.js"],"sourcesContent":["import { newInvariantError, invariant } from \"../../utilities/globals/index.js\";\nimport { Observable } from \"../../utilities/index.js\";\nimport { validateOperation, createOperation, transformOperation, } from \"../utils/index.js\";\nfunction passthrough(op, forward) {\n    return (forward ? forward(op) : Observable.of());\n}\nfunction toLink(handler) {\n    return typeof handler === \"function\" ? new ApolloLink(handler) : handler;\n}\nfunction isTerminating(link) {\n    return link.request.length <= 1;\n}\nvar ApolloLink = /** @class */ (function () {\n    function ApolloLink(request) {\n        if (request)\n            this.request = request;\n    }\n    ApolloLink.empty = function () {\n        return new ApolloLink(function () { return Observable.of(); });\n    };\n    ApolloLink.from = function (links) {\n        if (links.length === 0)\n            return ApolloLink.empty();\n        return links.map(toLink).reduce(function (x, y) { return x.concat(y); });\n    };\n    ApolloLink.split = function (test, left, right) {\n        var leftLink = toLink(left);\n        var rightLink = toLink(right || new ApolloLink(passthrough));\n        var ret;\n        if (isTerminating(leftLink) && isTerminating(rightLink)) {\n            ret = new ApolloLink(function (operation) {\n                return test(operation) ?\n                    leftLink.request(operation) || Observable.of()\n                    : rightLink.request(operation) || Observable.of();\n            });\n        }\n        else {\n            ret = new ApolloLink(function (operation, forward) {\n                return test(operation) ?\n                    leftLink.request(operation, forward) || Observable.of()\n                    : rightLink.request(operation, forward) || Observable.of();\n            });\n        }\n        return Object.assign(ret, { left: leftLink, right: rightLink });\n    };\n    ApolloLink.execute = function (link, operation) {\n        return (link.request(createOperation(operation.context, transformOperation(validateOperation(operation)))) || Observable.of());\n    };\n    ApolloLink.concat = function (first, second) {\n        var firstLink = toLink(first);\n        if (isTerminating(firstLink)) {\n            globalThis.__DEV__ !== false && invariant.warn(38, firstLink);\n            return firstLink;\n        }\n        var nextLink = toLink(second);\n        var ret;\n        if (isTerminating(nextLink)) {\n            ret = new ApolloLink(function (operation) {\n                return firstLink.request(operation, function (op) { return nextLink.request(op) || Observable.of(); }) || Observable.of();\n            });\n        }\n        else {\n            ret = new ApolloLink(function (operation, forward) {\n                return (firstLink.request(operation, function (op) {\n                    return nextLink.request(op, forward) || Observable.of();\n                }) || Observable.of());\n            });\n        }\n        return Object.assign(ret, { left: firstLink, right: nextLink });\n    };\n    ApolloLink.prototype.split = function (test, left, right) {\n        return this.concat(ApolloLink.split(test, left, right || new ApolloLink(passthrough)));\n    };\n    ApolloLink.prototype.concat = function (next) {\n        return ApolloLink.concat(this, next);\n    };\n    ApolloLink.prototype.request = function (operation, forward) {\n        throw newInvariantError(39);\n    };\n    ApolloLink.prototype.onError = function (error, observer) {\n        if (observer && observer.error) {\n            observer.error(error);\n            // Returning false indicates that observer.error does not need to be\n            // called again, since it was already called (on the previous line).\n            // Calling observer.error again would not cause any real problems,\n            // since only the first call matters, but custom onError functions\n            // might have other reasons for wanting to prevent the default\n            // behavior by returning false.\n            return false;\n        }\n        // Throw errors will be passed to observer.error.\n        throw error;\n    };\n    ApolloLink.prototype.setOnError = function (fn) {\n        this.onError = fn;\n        return this;\n    };\n    return ApolloLink;\n}());\nexport { ApolloLink };\n//# sourceMappingURL=ApolloLink.js.map","import { ApolloLink } from \"./ApolloLink.js\";\nexport var empty = ApolloLink.empty;\n//# sourceMappingURL=empty.js.map","import { ApolloLink } from \"./ApolloLink.js\";\nexport var from = ApolloLink.from;\n//# sourceMappingURL=from.js.map","import { ApolloLink } from \"./ApolloLink.js\";\nexport var split = ApolloLink.split;\n//# sourceMappingURL=split.js.map","import { ApolloLink } from \"./ApolloLink.js\";\nexport var concat = ApolloLink.concat;\n//# sourceMappingURL=concat.js.map","import { ApolloLink } from \"./ApolloLink.js\";\nexport var execute = ApolloLink.execute;\n//# 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