@kaylum.io/json-graph-ts/lib/es5/jsongraph.js

Json Graph implementation in TypeScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.JsonGraph = void 0;
var crypto_1 = require("crypto");
var JsonGraph = /** @class */ (function () {
    function JsonGraph() {
        this._nodeLabelIndex = [];
        this.store = {
            graph: {
                nodes: [],
                edges: []
            }
        };
    }
    JsonGraph.prototype.addNode = function (label, metadata) {
        var _a, _b;
        if (this._nodeLabelIndex.includes(label))
            return this.findNodesByLabel(label)[0];
        var node = {
            id: (0, crypto_1.randomUUID)(),
            label: label,
            metadata: metadata
        };
        (_b = (_a = this.store.graph) === null || _a === void 0 ? void 0 : _a.nodes) === null || _b === void 0 ? void 0 : _b.push(node);
        this._nodeLabelIndex.push(label);
        return node;
    };
    JsonGraph.prototype.addEdge = function (sourceNodeId, targetNodeId, relation) {
        var _a, _b;
        var matches = this.findEdgeBySourceAndTarget(sourceNodeId, targetNodeId, relation);
        if (matches.length > 0)
            return matches[0];
        var edge = {
            id: (0, crypto_1.randomUUID)(),
            source: sourceNodeId,
            target: targetNodeId
        };
        if (relation)
            edge.relation = relation;
        (_b = (_a = this.store.graph) === null || _a === void 0 ? void 0 : _a.edges) === null || _b === void 0 ? void 0 : _b.push(edge);
        return edge;
    };
    JsonGraph.prototype.findEdgeBySourceAndTarget = function (source, target, relation) {
        var _a, _b;
        return ((_b = (_a = this.store.graph) === null || _a === void 0 ? void 0 : _a.edges) === null || _b === void 0 ? void 0 : _b.filter(function (edge) { return edge.source === source && edge.target === target && (relation ? edge.relation === relation : true); })) || [];
    };
    JsonGraph.prototype.findNodesByLabel = function (label) {
        var _a, _b;
        return ((_b = (_a = this.store.graph) === null || _a === void 0 ? void 0 : _a.nodes) === null || _b === void 0 ? void 0 : _b.filter(function (node) { return node.label === label; })) || [];
    };
    JsonGraph.prototype.findNodesByEdgeSource = function (source) {
        var _a, _b, _c, _d;
        var targets = (_b = (_a = this.store.graph) === null || _a === void 0 ? void 0 : _a.edges) === null || _b === void 0 ? void 0 : _b.filter(function (edge) { return edge.source === source; }).map(function (edge) { return edge.target; });
        return ((_d = (_c = this.store.graph) === null || _c === void 0 ? void 0 : _c.nodes) === null || _d === void 0 ? void 0 : _d.filter(function (node) { return targets === null || targets === void 0 ? void 0 : targets.includes(node.id); })) || [];
    };
    JsonGraph.prototype.findNodesByEdgeTarget = function (target) {
        var _a, _b, _c, _d;
        var sources = (_b = (_a = this.store.graph) === null || _a === void 0 ? void 0 : _a.edges) === null || _b === void 0 ? void 0 : _b.filter(function (edge) { return edge.target === target; }).map(function (edge) { return edge.source; });
        return ((_d = (_c = this.store.graph) === null || _c === void 0 ? void 0 : _c.nodes) === null || _d === void 0 ? void 0 : _d.filter(function (node) { return sources === null || sources === void 0 ? void 0 : sources.includes(node.id); })) || [];
    };
    JsonGraph.prototype.findNodesByRelation = function (relation) {
        var _this = this;
        var _a, _b;
        var related = (_b = (_a = this.store.graph) === null || _a === void 0 ? void 0 : _a.edges) === null || _b === void 0 ? void 0 : _b.filter(function (edge) { return edge.relation === relation; });
        var sources = related === null || related === void 0 ? void 0 : related.map(function (edge) { var _a, _b; return (_b = (_a = _this.store.graph) === null || _a === void 0 ? void 0 : _a.nodes) === null || _b === void 0 ? void 0 : _b.filter(function (node) { return edge.source === node.id; })[0]; });
        var targets = related === null || related === void 0 ? void 0 : related.map(function (edge) { var _a, _b; return (_b = (_a = _this.store.graph) === null || _a === void 0 ? void 0 : _a.nodes) === null || _b === void 0 ? void 0 : _b.filter(function (node) { return edge.target === node.id; })[0]; });
        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
        // @ts-ignore
        return sources === null || sources === void 0 ? void 0 : sources.map(function (source, i) { return [source, relation, targets[i]]; });
    };
    JsonGraph.prototype.toString = function (spacer, indent) {
        if (spacer === void 0) { spacer = null; }
        if (indent === void 0) { indent = 2; }
        return JSON.stringify(this.store, spacer, indent);
    };
    return JsonGraph;
}());
exports.JsonGraph = JsonGraph;
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