next.js plugin

function-next.config.js

const nextEnv = require('next-env');
const nextEnvOpts = { ... };

module.exports = (phase, {defaultConfig}) => {
  return nextEnv(nextEnvOpts, defaultConfig, phase); // explicitly pass phase
}


/// with other plugins
const withTypescript = require('@zeit/next-typescript')

module.exports = (phase, {defaultConfig}) => {
  return withTypescript(nextEnv(nextEnvOpts, defaultConfig, phase)); // explicitly pass phase
}

nodemodule-next.config.js

const nextEnv = require('next-env');
const nextEnvOpts = { ... };
                        
const withNextEnv = nextEnv(nextEnvOpts);

module.exports = withNextEnv({ // is phase implicitly passed?
  ... // default config
})


/// with other plugins
const withTypescript = require('@zeit/next-typescript')

module.exports = withTypescript(nextEnv(nextEnvOpts, { ... } )); // is phase implicitly passed?