Investigating Performance of Object#toString in ES2015

A relevant ad will be displayed here soon. These ads help pay for my hosting. Please consider disabling your ad blocker on Pony Foo. These ads help pay for my hosting. In this article, we’ll discuss how Object.prototype.toString() performs in the V8 engine, why it’s important, how it changed with the introduction of ES2015 symbols, and how the baseline performance can be improved by up to 6x (base

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V8の`Object.prototype.toString()`の最適化について。 ES2015で`Symbol.toStringTag`が追加され、toStringはこの実装を考慮する必要がある。(toString自体はオブジェクトの型判定によく使われている) オブジェクトが`Symbol.toStringTag`を実装して