Caution: When using Array.prototype.reduce(), make sure the arrow function returns a value

const filteredParams = [...appliedFilters].reduce((prev, curr) => {
    if (curr.key !== "multi")
        return { ...prev, ...curr.selectedValue.params };
    return;
}, {});

When I run this code, I encounter the following warning message in my console.

Line 22:13: Array.prototype.reduce() expects a return value from arrow function array-callback-return

Ignoring this warning is not an option for me, as I need to resolve it before deployment. How can I address this issue?

Answer №1

To complete the function, remember to include prev in the else block

const singleParams = [...appliedFilters].reduce((prev, curr) => {
    if (curr.key !== "multi")
        return { ...prev, ...curr.selectedValue.params };
    return prev;
}, {});

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