simple JS local storage utility

localStorage.ts

export const setLocalStorage = (key: string, value: any) => {
    if (typeof key !== "string") {
        throw new Error(`Error in localStorage: key ${key} must be of type string but is ${typeof key}`);
    }
    const typeOfValue = typeof value;
    console.log(`localStorage: about to save value of type ${typeOfValue} for key ${key}`);

    let valueToStore;
    switch (typeOfValue) {
        case "string":
        case "number":
        case "boolean":
            valueToStore = value.toString();
            break;

        case "object":
            valueToStore = JSON.stringify(value);
            break;

        default:
            throw new Error(`Error in localStorage: tried to save value ${value} of type ${typeOfValue} for key ${key}`);
    }
    try {
        window.localStorage.setItem(key, valueToStore);
    } catch (error) {
        console.error(error);
    }
};

export const getLocalStorage = (key: string, defaultValue?: any) => {
    if (typeof key !== "string") {
        throw new Error(`Error in localStorage: key ${key} must be of type string but is ${typeof key}`);
    }

    const value = window.localStorage.getItem(key);

    if (value) {
        try {
            const obj = JSON.parse(value);
            return obj;
        } catch (error) {
            const isnum = /^\d+$/.test(value);
            if (isnum) {
                return parseInt(value, 10);
            }

            if (value === "true") {
                return true;
            }

            if (value === "false") {
                return false;
            }

            return value;
        }
    } else {
        if (defaultValue) {
            console.warn("localStorage: Returning default value");
            return defaultValue;
        }
        console.warn(`Warning in localStorage: Cannot find value for key ${key} and no default value provided, returning null`);
        return null;
    }
};