Compilation is slow

[sunshixiong789]

Is this a bug report?

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Can you also reproduce the problem with npm 4.x?

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Which terms did you search for in User Guide?

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Environment

1. npm ls react-scripts-ts (if you haven’t ejected):
2. node -v:
3. npm -v:
4. yarn --version (if you use Yarn):
5. npm ls react-scripts-ts (if you haven’t ejected):

Then, specify:

1. Operating system:
2. Browser and version (if relevant):

Steps to Reproduce

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I'm going to deal with slow compilation。How can you see the logs compiled, or solve the slow compilation problem.It takes about four to five minutes to run. I can't stand it

Expected Behavior

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Actual Behavior

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Reproducible Demo

(Paste the link to an example project and exact instructions to reproduce the issue.)

I'm going to deal with slow compilation。How can you see the logs compiled, or solve the slow compilation problem.It takes about four to five minutes to run. I can't stand it