61 lines
1015 B
Markdown
61 lines
1015 B
Markdown
# babel-plugin-codemod-optional-catch-binding
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> If the argument bound to the catch block is not referenced in the catch block, that argument and the catch binding is removed.
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## Examples
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```js
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try {
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throw 0;
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} catch (err) {
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console.log("it failed, but this code executes");
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}
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```
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Is transformed to:
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```js
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try {
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throw 0;
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} catch {
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console.log("it failed, but this code executes");
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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-codemod-optional-catch-binding
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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": ["codemod-optional-catch-binding"]
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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 codemod-optional-catch-binding 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: ["codemod-optional-catch-binding"]
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});
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```
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## References
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This codemod updates your source code in line with the following proposal:
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- [Proposal: Optional Catch Binding for ECMAScript](https://github.com/babel/proposals/issues/7)
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