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dewey92/ts-arr-lookup.ts

Last active October 19, 2018 21:03
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TS Array Lookup
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ts-arr-lookup.ts
const getFinalPrice = (product: ProductModel) =>
product.price + product.tax;
const getProductById = (products: ProductModel[], id: number) =>
products.find(product => product.id === id);
const product = getProductById(productList, 1);
const finalPrice = getFinalPrice(product); // <- ERROR
// Argument of type 'ProductModel | undefined' is not assignable to parameter of type 'ProductModel'.
// Type 'undefined' is not assignable to type 'ProductModel'.
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