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* Examples: clarify language around Yarn create & npx * add missing READMEs and create-next-app usage * suggest people tag jthegedus in firebase related issues * add yarn alt instructions * cerebraljs example readme & fixes
57 lines
1.7 KiB
Markdown
57 lines
1.7 KiB
Markdown
[](https://deploy.now.sh/?repo=https://github.com/zeit/next.js/tree/master/examples/with-dotenv)
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# With Dotenv example
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## How to use
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### Using `create-next-app`
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Execute [`create-next-app`](https://github.com/segmentio/create-next-app) with [Yarn](https://yarnpkg.com/lang/en/docs/cli/create/) or [npx](https://github.com/zkat/npx#readme) to bootstrap the example:
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```bash
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npx create-next-app --example with-dotenv with-dotenv-app
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# or
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yarn create next-app --example with-dotenv with-dotenv-app
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```
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### Download manually
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Download the example [or clone the repo](https://github.com/zeit/next.js):
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```bash
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curl https://codeload.github.com/zeit/next.js/tar.gz/canary | tar -xz --strip=2 next.js-canary/examples/with-dotenv
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cd with-dotenv
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```
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Install it and run:
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```bash
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npm install
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npm run dev
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# or
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yarn
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yarn dev
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```
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Deploy it to the cloud with [now](https://zeit.co/now) ([download](https://zeit.co/download))
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```bash
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now
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```
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## The idea behind the example
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This example shows the most basic idea of babel replacement from multiple environment. We have 1 env variable: `TEST` which will be replaced in development env and in production env with different babel plugin. In local development, babel reads .env file and replace process.env.* in your nextjs files. In production env (such as heroku), babel reads the ENV and replace process.env.* in your nextjs files. Thus no more needed to commit your secrets anymore.
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Of course, please put .env* in your .gitignore when using this example locally.
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## Troubleshooting
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### Environment variables not showing on the page
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If for some reason the variable is not displayed on the page, try clearing the `babel-loader` cache:
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```
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rm -rf ./node_modules/.cache/babel-loader
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```
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