JavaScript ECMAScript PromiseJavaScript ECMAScript のPromiseに関する言語リファレンス情報をまとめたカテゴリです。PromiseクラスconstructorPromise() constructorinstance-methodPromise.prototype.catch()Promise.prototype.finally()Promise.prototype.then()static-methodPromise.all()Promise.allSettled()Promise.any()Promise.race()Promise.reject()Promise.resolve()Promise.try()Promise.withResolvers()static-accessor-propertyPromise[Symbol.species]