developit / developit/babel-preset-modernize
TypeError: Cannot read property 'constant' of undefined
- Dominant language
- JavaScript
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- 119
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Description
```
(node:77743) UnhandledPromiseRejectionWarning: TypeError: .../.....2d2e7a10.js: Cannot read property 'constant' of undefined
at PluginPass.FunctionExpression|FunctionDeclaration (.../node_modules/babel-preset-modernize/dist/plugins/transform-iife-arrows/index.js:1:424)
at newFn (.../node_modules/@babel/traverse/lib/visitors.js:175:21)
at NodePath._call (.../node_modules/@babel/traverse/lib/path/context.js:55:20)
at NodePath.call (.../node_modules/@babel/traverse/lib/path/context.js:42:17)
at NodePath.visit (.../node_modules/@babel/traverse/lib/path/context.js:92:31)
at TraversalContext.visitQueue (.../node_modules/@babel/traverse/lib/context.js:115:16)
at TraversalContext.visitSingle (.../node_modules/@babel/traverse/lib/context.js:84:19)
at TraversalContext.visit (.../node_modules/@babel/traverse/lib/context.js:143:19)
at Function.traverse.node (.../node_modules/@babel/traverse/lib/index.js:82:17)
at traverse (.../node_modules/@babel/traverse/lib/index.js:64:12)
```
Caused by [this line](https://github.com/developit/babel-preset-modernize/blob/main/src/plugins/transform-iife-arrows/index.js#L37)
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