Hello, I am new to TypeScript and I'm struggling with fixing this error message:
Property 'data' is missing in type 'never[]' but required in type '{ data: { products: []; }; }'.
Here is my code snippet:
let medias :[] = [];
let res :{
data: {
products: []
},
} =[];
try {
res = await axios.get('https://dummyjson.com/products?limit=10&skip=10');
medias = res.data.products;
} catch (e) {
medias = [];
}
There are a couple of issues that need to be addressed:
res and using an empty array [] for products. This leads TypeScript to infer never[] because it doesn't have information about the elements in the array, affecting both res's products and medias.res should be an object with a data property, initializing it with just [] contradicts this specification.To resolve these issues, avoid inferring types and explicitly declare the expected type for the arrays. You can also utilize a generic type argument with axios.get to specify the expected type for the data returned by the request. For example, if you anticipate an array of strings:
let medias: string[] = [];
// ^^^^^^
try {
const res = await axios.get<{ products: string[] }>(
// ^^^^^^^^^^^^^^^^^^^^^^^^
"https://dummyjson.com/products?limit=10&skip=10"
);
medias = res.data.products;
} catch (e) {
// No need to reassign `medias` to an empty array here since it's done earlier
}
If you're expecting an array of a different type, simply replace string with the appropriate type above.
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