7e90d56024
* Proposal: Logical Assignment Operators https://github.com/jridgewell/proposal-logical-assignment I'm bringing it [back](https://github.com/babel/babel/pull/516). 😉 * Use expectPlugin * Add to stage 0 preset * Add logicalAssignment missing plugin log stuff
64 lines
1002 B
Markdown
64 lines
1002 B
Markdown
# @babel/plugin-proposal-logical-assignment-operator
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> Transforms logical assignment operators into short-circuited assignments
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## Example
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**In**
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```javascript
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a ||= b;
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obj.a.b ||= c;
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a &&= b;
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obj.a.b &&= c;
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```
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**Out**
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```javascript
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var _obj$a, _obj$a2;
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a || (a = b);
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(_obj$a = obj.a).b || (_obj$a.b = c);
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a && (a = b);
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(_obj$a2 = obj.a).b && (_obj$a2.b = c);
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```
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## Installation
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```sh
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npm install --save-dev @babel/plugin-proposal-logical-assignment-operators
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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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```json
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{
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"plugins": ["@babel/plugin-proposal-logical-assignment-operators"]
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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 @babel/plugin-proposal-logical-assignment-operators 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: ["@babel/plugin-proposal-logical-assignment-operators"]
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});
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```
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## References
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* [Proposal: Logical Assignment Operators](https://github.com/jridgewell/proposal-logical-assignment-operators)
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