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Using fp-ts for Functional Programming in TypeScript

Solution Review: Writing Function Using Switch

Learn to write a function using a switch statement.

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Solution

TypeScript 3.3.4
function converse(nationality: Nationality) {
    switch(nationality.type) {
        case "Belgian":
            return `${nationality.name} loves fries`;
        case "German":
            return `This guy loves driving in a real German ${nationality.favoriteCar}`;
        case "American":
            return nationality.eastSide ? "East side!" : "West side!";
        default:
            const _exhaustiveCheck: never = nationality;
            return _exhaustiveCheck;
    }
}
console.log(converse({type:"German",favoriteCar:"Audi"}));

Explanation

Here’s a line-by-line explanation for the solution above:

  • Lines 1–2: Create a converse functionthat
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