https://gardenshed.com.au/productProcessor.js

1// productProcessor.js
2self.onmessage = function(event) {
3    const { products } = event.data;
4    
5    if (!products || !Array.isArray(products)) {
6        self.postMessage({
7            type: 'error',
8            error: 'Invalid products data'
9        });
10        return;
11    }
12
13    try {
14        const variantMap = new Map();
15        const productMap = new Map();
16        
17        // Process products in chunks to avoid blocking
18        const chunkSize = 50;
19        let processedCount = 0;
20        
21        for (let i = 0; i < products.length; i += chunkSize) {
22            const chunk = products.slice(i, i + chunkSize);
23            
24            // Process each product in the chunk
25            chunk.forEach(product => {
26                if (product.variants && Array.isArray(product.variants)) {
27                    product.variants.forEach(variant => {
28                        if (variant.sku) {
29                            variantMap.set(variant.sku, variant);
30                            productMap.set(variant.sku, product);
31                        }
32                    });
33                }
34            });
35            
36            processedCount += chunk.length;
37            
38            // Send progress update
39            self.postMessage({
40                type: 'progress',
41                progress: processedCount / products.length,
42                processedCount,
43                totalCount: products.length
44            });
45        }
46        
47        // Send final result
48        self.postMessage({
49            type: 'complete',
50            processedData: products,
51            skuMaps: {
52                variantMap: Array.from(variantMap.entries()),
53                productMap: Array.from(productMap.entries())
54            }
55        });
56    } catch (error) {
57        self.postMessage({
58            type: 'error',
59            error: error.message || 'Error processing products'
60        });
61    }
62};