JSON tree shaking is not supported

[flyingsky]

Type of issue

bug

Description

Add import {version} from '../package.json' to get version from package.json and use it, but whole package.json is included in js bundle. Same code without fusion only version is imported and tree shaking works well.

Current behavior

Whole json file is included in js bundle.

Expected behavior

Only imported property should be imported.

Steps to reproduce

1. Add import {version} from '../package.json' to your code and use it.
2. yarn build-production the whole json file is included in js bundle.

Your environment

• fusion-cli version: 1.9.1

• Node.js version (node --version): 8.11.3

• npm version (npm --version): 5.6.0

• Operating System: Mac

[rtsao]

I think this is technically a breaking change. This will be supported in the next major fusion-cli version.

See: #509