npm run build error

I follow the guides and everything goes ok until i run this command: 'npm run build', it prints: `Error: It looks like your Babel configuration specifies a module transformer. Please disable it. If you're using the "es2015" preset, consider using "es2015-rollup" instead.`

I've been met this issue before when i use rollup, and i used 'babelrc-rollup' to solve this problem.
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Reproduce the problem by running `npm run build`, then locate the Babel configuration and the Rollup setup mentioned in the error. Done means the build completes without the module-transformer error; the issue does not name specific files or tests to run.

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