74 lines
2.7 KiB
JavaScript
74 lines
2.7 KiB
JavaScript
// @flow
|
||
const fs = require("fs");
|
||
const path = require("path");
|
||
const paths = require("./paths");
|
||
|
||
// Make sure that including paths.js after env.js will read .env variables.
|
||
delete require.cache[require.resolve("./paths")];
|
||
|
||
const NODE_ENV = process.env.NODE_ENV;
|
||
if (!NODE_ENV) {
|
||
throw new Error(
|
||
"The NODE_ENV environment variable is required but was not specified."
|
||
);
|
||
}
|
||
|
||
// https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use
|
||
var dotenvFiles = [
|
||
`${paths.dotenv}.${NODE_ENV}.local`,
|
||
`${paths.dotenv}.${NODE_ENV}`,
|
||
// Don't include `.env.local` for `test` environment
|
||
// since normally you expect tests to produce the same
|
||
// results for everyone
|
||
...(NODE_ENV !== "test" ? [`${paths.dotenv}.local`] : []),
|
||
paths.dotenv,
|
||
];
|
||
|
||
// Load environment variables from .env* files. Suppress warnings using silent
|
||
// if this file is missing. dotenv will never modify any environment variables
|
||
// that have already been set. Variable expansion is supported in .env files.
|
||
// https://github.com/motdotla/dotenv
|
||
// https://github.com/motdotla/dotenv-expand
|
||
dotenvFiles.forEach((dotenvFile) => {
|
||
if (fs.existsSync(dotenvFile)) {
|
||
require("dotenv-expand")(
|
||
require("dotenv").config({
|
||
path: dotenvFile,
|
||
})
|
||
);
|
||
}
|
||
});
|
||
|
||
// We support resolving modules according to `NODE_PATH`.
|
||
// This lets you use absolute paths in imports inside large monorepos:
|
||
// https://github.com/facebookincubator/create-react-app/issues/253.
|
||
// It works similar to `NODE_PATH` in Node itself:
|
||
// https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders
|
||
// Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.
|
||
// Otherwise, we risk importing Node.js core modules into an app instead of Webpack shims.
|
||
// https://github.com/facebookincubator/create-react-app/issues/1023#issuecomment-265344421
|
||
// We also resolve them to make sure all tools using them work consistently.
|
||
const appDirectory = fs.realpathSync(process.cwd());
|
||
process.env.NODE_PATH = (process.env.NODE_PATH || "")
|
||
.split(path.delimiter)
|
||
.filter((folder) => folder && !path.isAbsolute(folder))
|
||
.map((folder) => path.resolve(appDirectory, folder))
|
||
.join(path.delimiter);
|
||
|
||
function getClientEnvironment() {
|
||
const raw = {};
|
||
// Useful for determining whether we’re running in production mode.
|
||
// Most importantly, it switches React into the correct mode.
|
||
raw.NODE_ENV = process.env.NODE_ENV || "development";
|
||
|
||
// Stringify all values so we can feed into Webpack's DefinePlugin.
|
||
const stringified = {"process.env": {}};
|
||
for (const key of Object.keys(raw)) {
|
||
stringified["process.env"][key] = JSON.stringify(raw[key]);
|
||
}
|
||
|
||
return {raw, stringified};
|
||
}
|
||
|
||
module.exports = getClientEnvironment;
|