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#TypeScript の三項演算子は、文字列が空の場合に false で判定されるようだ。というか javascript でも同じ挙動みたいですね。

Last updated at Posted at 2020-03-15


const a = ""
console.log(a ? "A PRESENT" : "A EMPTY") // A EMPTY

const b = "B"
console.log(b ? "B PRESENT" : "B EMPTY") // B PRESENT

// js
//
// var a = "";
// console.log(a ? "A PRESENT" : "A EMPTY");
// var b = "B";
// console.log(b ? "B PRESENT" : "B EMPTY");



Original by Github issue

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