clustering-tfjs/dist/tf-loader.node.js

High-performance TypeScript clustering algorithms (K-Means, Spectral, Agglomerative) with TensorFlow.js acceleration and scikit-learn compatibility

"use strict";
/**
 * Node.js-specific TensorFlow.js loader
 *
 * This module attempts to load the best available TensorFlow.js backend
 * for Node.js environments, with automatic fallback.
 */
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.loadTensorFlow = loadTensorFlow;
async function loadTensorFlow() {
    // Try GPU backend first
    try {
        // Use require.resolve to check if module exists before importing
        require.resolve('@tensorflow/tfjs-node-gpu');
        const tfGpu = await Promise.resolve(`${'@tensorflow/tfjs-node-gpu'}`).then(s => __importStar(require(s)));
        console.log('Using TensorFlow.js GPU backend');
        return tfGpu;
    }
    catch (gpuError) {
        // GPU backend not available, try CPU backend
        try {
            require.resolve('@tensorflow/tfjs-node');
            const tfNode = await Promise.resolve().then(() => __importStar(require('@tensorflow/tfjs-node')));
            console.log('Using TensorFlow.js Node.js CPU backend');
            return tfNode;
        }
        catch (nodeError) {
            // Neither Node backend available, fall back to pure JS
            try {
                require.resolve('@tensorflow/tfjs');
                const tfJs = await Promise.resolve().then(() => __importStar(require('@tensorflow/tfjs')));
                console.log('Using TensorFlow.js pure JavaScript backend (slower performance)');
                return tfJs;
            }
            catch (jsError) {
                throw new Error('No TensorFlow.js backend available. Please install one of:\n' +
                    '- @tensorflow/tfjs-node-gpu (for GPU acceleration)\n' +
                    '- @tensorflow/tfjs-node (for CPU acceleration)\n' +
                    '- @tensorflow/tfjs (for pure JavaScript fallback)');
            }
        }
    }
}