TypeError: Cannot read property 'push' of undefined

[piotrkochan]

preact.config.js:

import asyncPlugin from 'preact-cli-plugin-async';

export default (config, env, helpers) => {
  asyncPlugin(config);
};

error:

 npm run build                            
> test-widget@0.1.0 build /media/sdb1/dev/preact/test-widget
> preact build --no-prerender --clean --template src/index.ejs --service-worker false

Error: Error at /media/sdb1/dev/preact/test-widget/preact.config.js: 
TypeError: Cannot read property 'push' of undefined

[hguillermo]

Getting the same error.

[ugened47]

Same error

[PhilTheAir]

same...

[cht8687]

solution for this:

include es2017 in your .babelrc file:

{
  "presets": ["preact-cli/babel", "es2017"],
}

and perform

npm install --save-dev babel-preset-es2017