2/node_modules/apollo-link/lib/linkUtils.js

"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 apollo_utilities_1 = require("apollo-utilities");
exports.getOperationName = apollo_utilities_1.getOperationName;
var ts_invariant_1 = require("ts-invariant");
function validateOperation(operation) {
    var OPERATION_FIELDS = [
        'query',
        'operationName',
        'variables',
        'extensions',
        'context',
    ];
    for (var _i = 0, _a = Object.keys(operation); _i < _a.length; _i++) {
        var key = _a[_i];
        if (OPERATION_FIELDS.indexOf(key) < 0) {
            throw new ts_invariant_1.InvariantError("illegal argument: " + key);
        }
    }
    return operation;
}
exports.validateOperation = validateOperation;
var LinkError = (function (_super) {
    tslib_1.__extends(LinkError, _super);
    function LinkError(message, link) {
        var _this = _super.call(this, message) || this;
        _this.link = link;
        return _this;
    }
    return LinkError;
}(Error));
exports.LinkError = LinkError;
function isTerminating(link) {
    return link.request.length <= 1;
}
exports.isTerminating = isTerminating;
function toPromise(observable) {
    var completed = false;
    return new Promise(function (resolve, reject) {
        observable.subscribe({
            next: function (data) {
                if (completed) {
                    ts_invariant_1.invariant.warn("Promise Wrapper does not support multiple results from Observable");
                }
                else {
                    completed = true;
                    resolve(data);
                }
            },
            error: reject,
        });
    });
}
exports.toPromise = toPromise;
exports.makePromise = toPromise;
function fromPromise(promise) {
    return new zen_observable_ts_1.default(function (observer) {
        promise
            .then(function (value) {
            observer.next(value);
            observer.complete();
        })
            .catch(observer.error.bind(observer));
    });
}
exports.fromPromise = fromPromise;
function fromError(errorValue) {
    return new zen_observable_ts_1.default(function (observer) {
        observer.error(errorValue);
    });
}
exports.fromError = fromError;
function transformOperation(operation) {
    var transformedOperation = {
        variables: operation.variables || {},
        extensions: operation.extensions || {},
        operationName: operation.operationName,
        query: operation.query,
    };
    if (!transformedOperation.operationName) {
        transformedOperation.operationName =
            typeof transformedOperation.query !== 'string'
                ? apollo_utilities_1.getOperationName(transformedOperation.query)
                : '';
    }
    return transformedOperation;
}
exports.transformOperation = transformOperation;
function createOperation(starting, operation) {
    var context = tslib_1.__assign({}, starting);
    var setContext = function (next) {
        if (typeof next === 'function') {
            context = tslib_1.__assign({}, context, next(context));
        }
        else {
            context = tslib_1.__assign({}, context, next);
        }
    };
    var getContext = function () { return (tslib_1.__assign({}, context)); };
    Object.defineProperty(operation, 'setContext', {
        enumerable: false,
        value: setContext,
    });
    Object.defineProperty(operation, 'getContext', {
        enumerable: false,
        value: getContext,
    });
    Object.defineProperty(operation, 'toKey', {
        enumerable: false,
        value: function () { return getKey(operation); },
    });
    return operation;
}
exports.createOperation = createOperation;
function getKey(operation) {
    var query = operation.query, variables = operation.variables, operationName = operation.operationName;
    return JSON.stringify([operationName, query, variables]);
}
exports.getKey = getKey;
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