Plugin provided an invalid property of "default"

[zaggino]

Tried using the plugin here: https://github.com/pureprofile-warp/babel-preset-pp-node4/blob/master/index.js but on start I get an error:

C:\dev\pureprofile\ah-api-web\node_modules\babel-core\lib\transformation\plugin.js:125
      throw new Error(messages.get("pluginInvalidProperty", loc, i, key));
      ^

Error: Plugin 0 specified in "C:\\dev\\pureprofile\\ah-api-web\\node_modules\\babel-preset-pp-node4\\index.js" provided an invalid property of "default"
    at Plugin.init (C:\dev\pureprofile\ah-api-web\node_modules\babel-core\lib\transformation\plugin.js:125:13)
    at Function.normalisePlugin (C:\dev\pureprofile\ah-api-web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:167:12)
    at C:\dev\pureprofile\ah-api-web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:197:30
    at Array.map (native)
    at Function.normalisePlugins (C:\dev\pureprofile\ah-api-web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:173:20)
    at OptionManager.mergeOptions (C:\dev\pureprofile\ah-api-web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:271:36)
    at OptionManager.mergePresets (C:\dev\pureprofile\ah-api-web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:325:16)
    at OptionManager.mergeOptions (C:\dev\pureprofile\ah-api-web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:287:12)
    at OptionManager.addConfig (C:\dev\pureprofile\ah-api-web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:221:10)
    at OptionManager.findConfigs (C:\dev\pureprofile\ah-api-web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:364:16)
[nodemon] app crashed - waiting for file changes before starting...

[loganfsmyth]

Sorry, did you ever figure out the cause of this? As long as you are on a recent version of Babel, I wouldn't expect this behavior.

[kt3k]

Because this plugin exports only exports.default and doesn't export module.exports, maybe you need to put require("babel-plugin-transform-builtin-extend").default instead of require("babel-plugin-transform-builtin-extend").

I saw a similar error when I was creating this preset.
Babel's official transforms still export both module.exports and module.exports.default and that's why you don't need to put .default after require(...) when requiring them.

[zaggino]

That indeed worked: https://github.com/pureprofile-warp/babel-preset-pp-node4/commit/d6c0d193157d92a49a6296506aab05231cfbcb6b
Thanks @kt3k

[kt3k]

😄 👍

[yvele]

@kt3k I ran in the same issue, thank you so much for the .defaultworkarround 👍