# babel-plugin-transform-es2015-computed-properties

> Compile ES2015 computed properties to ES5

Latest version **6.24.1** (published 2017-04-07) · MIT license · 0 weekly downloads

## Install

```sh
npm install babel-plugin-transform-es2015-computed-properties
pnpm add babel-plugin-transform-es2015-computed-properties
yarn add babel-plugin-transform-es2015-computed-properties
bun add babel-plugin-transform-es2015-computed-properties
```

## Health

**Score 35/100 (D)** — status: abandoned.

Positive: no vulnerabilities; high maintenance score; popular repo.

Warnings: low downloads; no types; no esm support.

Negative: abandoned.

## Facts

| | |
|---|---|
| Version | 6.24.1 |
| Published | 2017-04-07 |
| First published | 2015-10-29 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 2 |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 43992 |
| Maintainers | amasad, hzoo, jmm, loganfsmyth, sebmck, thejameskyle |
| Keywords | babel-plugin |

## Links

- npm: https://www.npmjs.com/package/babel-plugin-transform-es2015-computed-properties
- Repository: https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-es2015-computed-properties
- npm.io page: https://npm.io/package/babel-plugin-transform-es2015-computed-properties

## Dependencies (2)

- [babel-runtime](https://npm.io/package/babel-runtime.md) ^6.22.0
- [babel-template](https://npm.io/package/babel-template.md) ^6.24.1

## Alternatives

- [@openai/codex-sdk](https://npm.io/package/@openai/codex-sdk.md) — 731.4K weekly downloads
- [babel-plugin-transform-react-jsx](https://npm.io/package/babel-plugin-transform-react-jsx.md) — 565.0K weekly downloads
- [babel-helper-remove-or-void](https://npm.io/package/babel-helper-remove-or-void.md) — 508.5K weekly downloads
- [@pnpm/store-controller-types](https://npm.io/package/@pnpm/store-controller-types.md) — 186.9K weekly downloads
- [react-native-signature-canvas](https://npm.io/package/react-native-signature-canvas.md) — 155.6K weekly downloads

## Recent versions

- 6.24.1 (latest) — 2017-04-07
- 7.0.0-beta.3 (next) — 2017-10-15
- 7.0.0-beta.2 — 2017-09-26
- 7.0.0-beta.1 — 2017-09-19
- 7.0.0-beta.0 — 2017-09-12
- 7.0.0-alpha.20 — 2017-08-30
- 7.0.0-alpha.19 — 2017-08-07
- 7.0.0-alpha.18 — 2017-08-03
- 7.0.0-alpha.17 — 2017-07-26
- 7.0.0-alpha.16 — 2017-07-25
- 7.0.0-alpha.15 — 2017-07-12
- 7.0.0-alpha.14 — 2017-07-12
- 7.0.0-alpha.12 — 2017-05-31
- 7.0.0-alpha.11 — 2017-05-31
- 7.0.0-alpha.10 — 2017-05-25
- … 22 more at https://npm.io/package/babel-plugin-transform-es2015-computed-properties/versions

## README

# babel-plugin-transform-es2015-computed-properties

> Compile ES2015 computed properties to ES5

## Example

**In**

```js
var obj = {
  ["x" + foo]: "heh",
  ["y" + bar]: "noo",
  foo: "foo",
  bar: "bar"
};
```

**Out**

```js
var _obj;

function _defineProperty(obj, key, value) {
  if (key in obj) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
  } else {
    obj[key] = value;
  }

  return obj;
}

var obj = (
  _obj = {},
  _defineProperty(_obj, "x" + foo, "heh"),
  _defineProperty(_obj, "y" + bar, "noo"),
  _defineProperty(_obj, "foo", "foo"),
  _defineProperty(_obj, "bar", "bar"),
  _obj
);
```

## Installation

```sh
npm install --save-dev babel-plugin-transform-es2015-computed-properties
```

## Usage

### Via `.babelrc` (Recommended)

**.babelrc**

Without options:

```json
{
  "plugins": ["transform-es2015-computed-properties"]
}
```

With options:

```json
{
  "plugins": [
    ["transform-es2015-computed-properties", {
      "loose": true
    }]
  ]
}
```

### Via CLI

```sh
babel --plugins transform-es2015-computed-properties script.js
```

### Via Node API

```javascript
require("babel-core").transform("code", {
  plugins: ["transform-es2015-computed-properties"]
});
```

## Options

### `loose`

`boolean`, defaults to `false`

Just like method assignment in classes, in loose mode, computed property names
use simple assignments instead of being defined. This is unlikely to be an issue
in production code.

#### Example

***In***

```js
var obj = {
  ["x" + foo]: "heh",
  ["y" + bar]: "noo",
  foo: "foo",
  bar: "bar"
};
```

***Out***

```js
var _obj;

var obj = (
  _obj = {},
  _obj["x" + foo] = "heh",
  _obj["y" + bar] = "noo",
  _obj.foo = "foo",
  _obj.bar = "bar",
  _obj
);
```

---
_Source: https://npm.io/package/babel-plugin-transform-es2015-computed-properties · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._