Can't get .env.development && .env.production variable

[jiujiaonuannan]

Describe the bug

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Did you try recovering your dependencies?

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Which terms did you search for in User Guide?

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Environment

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Steps to reproduce

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1. add .env.developent in root path
2. add content into the .env.developent

REACT_APP_CHAIN_ID = "42"

# 10+ nodes balanced, US/EU
REACT_APP_NODE_1 = "https://kovan.infura.io"

# 10+ nodes balanced, US/EU
REACT_APP_NODE_2 = "https://kovan.infura.io"

# 10+ nodes balanced in each region, global
REACT_APP_NODE_3 = "https://kovan.infura.io"

3. in the App.js to process.env.REACT_APP_NODE_1 can't get the data, is undefined

Expected behavior

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Actual behavior

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Reproducible demo

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[juliariec]

From the documentation:

The environment variables are embedded during the build time. Since Create React App produces a static HTML/CSS/JS bundle, it can’t possibly read them at runtime.

Is process.env.REACT_APP_NODE_1 undefined at runtime or after you've created a build?

[stale]

This issue has been automatically marked as stale because it has not had any recent activity. It will be closed in 5 days if no further activity occurs.