A proposal for implementing constructor parameter properties in ECMAScript

TypeScript provides a convenient syntax for constructor parameter properties, allowing you to write code like this:

constructor(a, public b, private _c) {}

This is essentially shorthand for the following code:

constructor(a, b, _c) {
  this.b = b;
  this._c = _c;
}

Considering that ECMAScript proposals are introducing features previously exclusive to TypeScript, such as class fields and their visibility, it would not be surprising to see constructor parameter properties added in the future.

Are there any ongoing proposals or efforts to incorporate constructor parameter properties into ECMAScript? Are there Babel plugins available that offer similar syntactic sugar?

Despite my search, I have not come across any specific information on this topic. However, it's possible that different terminology could be used to describe the same functionality.

Answer №1

Have there been any discussion or proposals regarding constructor parameter properties in ECMAScript?

Not at this moment.

Are there Babel plugins that offer support for similar syntactic sugar?

You can utilize the typescript transform with babel: https://babeljs.io/docs/en/next/babel-preset-typescript.html

Alternatively, you can just use typescript on its own as it includes the necessary transformation 🌹

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