I have an array of items where I want to append an async value getProductMinQuantity.
The problem is that the render res.status(200)... is sent before item.order_quantity_minimum had been edited.
I thought that a map like below would create a new promise with the items updated.
newResult is a type Promise<any>[] | undefined, I cannot do .then .catch to then execut my res.status in it.
const getCart = async () => {
...
let newResult = result.data?.line_items.physical_items.map(async (item: any) =>
item.order_quantity_minimum = await getProductMinQuantity(item.product_id)
)
res.status(200).json({
data: result.data ? normalizeCart(result.data) : null,
})
}
Any thought how I can arrange that ?
Classic question; you can't use await inside a synchronous array method (map, forEach, filter etc.). Instead, use a for...of loop.
let newResult = []
for(let item of result.data?.line_items.physical_items) {
item.order_quantity_minimum = await getProductMinQuantity(item.product_id)
newResult.push(item);
}
// Do something with newResult