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static/js/ketcher2/node_modules/babel-plugin-transform-es2015-computed-properties/README.md
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static/js/ketcher2/node_modules/babel-plugin-transform-es2015-computed-properties/README.md
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# babel-plugin-transform-es2015-computed-properties
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> Compile ES2015 computed properties to ES5
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## Example
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**In**
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```js
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var obj = {
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["x" + foo]: "heh",
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["y" + bar]: "noo",
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foo: "foo",
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bar: "bar"
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};
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```
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**Out**
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```js
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var _obj;
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function _defineProperty(obj, key, value) {
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if (key in obj) {
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Object.defineProperty(obj, key, {
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value: value,
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enumerable: true,
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configurable: true,
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writable: true
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});
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} else {
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obj[key] = value;
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}
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return obj;
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}
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var obj = (
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_obj = {},
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_defineProperty(_obj, "x" + foo, "heh"),
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_defineProperty(_obj, "y" + bar, "noo"),
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_defineProperty(_obj, "foo", "foo"),
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_defineProperty(_obj, "bar", "bar"),
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_obj
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);
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```
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## Installation
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```sh
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npm install --save-dev babel-plugin-transform-es2015-computed-properties
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```
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## Usage
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### Via `.babelrc` (Recommended)
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**.babelrc**
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Without options:
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```json
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{
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"plugins": ["transform-es2015-computed-properties"]
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}
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```
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With options:
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```json
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{
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"plugins": [
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["transform-es2015-computed-properties", {
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"loose": true
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}]
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]
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}
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```
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### Via CLI
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```sh
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babel --plugins transform-es2015-computed-properties script.js
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```
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### Via Node API
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```javascript
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require("babel-core").transform("code", {
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plugins: ["transform-es2015-computed-properties"]
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});
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```
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## Options
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### `loose`
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`boolean`, defaults to `false`
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Just like method assignment in classes, in loose mode, computed property names
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use simple assignments instead of being defined. This is unlikely to be an issue
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in production code.
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#### Example
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***In***
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```js
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var obj = {
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["x" + foo]: "heh",
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["y" + bar]: "noo",
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foo: "foo",
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bar: "bar"
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};
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```
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***Out***
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```js
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var _obj;
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var obj = (
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_obj = {},
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_obj["x" + foo] = "heh",
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_obj["y" + bar] = "noo",
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_obj.foo = "foo",
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_obj.bar = "bar",
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_obj
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);
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```
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