diff --git a/config/env.js b/config/env.js new file mode 100644 index 0000000..b0344c5 --- /dev/null +++ b/config/env.js @@ -0,0 +1,93 @@ +'use strict'; + +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, +].filter(Boolean); + +// 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/facebook/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/facebook/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); + +// Grab NODE_ENV and REACT_APP_* environment variables and prepare them to be +// injected into the application via DefinePlugin in Webpack configuration. +const REACT_APP = /^REACT_APP_/i; + +function getClientEnvironment(publicUrl) { + const raw = Object.keys(process.env) + .filter(key => REACT_APP.test(key)) + .reduce( + (env, key) => { + env[key] = process.env[key]; + return env; + }, + { + // Useful for determining whether we’re running in production mode. + // Most importantly, it switches React into the correct mode. + NODE_ENV: process.env.NODE_ENV || 'development', + // Useful for resolving the correct path to static assets in `public`. + // For example, . + // This should only be used as an escape hatch. Normally you would put + // images into the `src` and `import` them in code to get their paths. + PUBLIC_URL: publicUrl, + } + ); + // Stringify all values so we can feed into Webpack DefinePlugin + const stringified = { + 'process.env': Object.keys(raw).reduce((env, key) => { + env[key] = JSON.stringify(raw[key]); + return env; + }, {}), + }; + + return { raw, stringified }; +} + +module.exports = getClientEnvironment; diff --git a/config/jest/cssTransform.js b/config/jest/cssTransform.js new file mode 100644 index 0000000..8f65114 --- /dev/null +++ b/config/jest/cssTransform.js @@ -0,0 +1,14 @@ +'use strict'; + +// This is a custom Jest transformer turning style imports into empty objects. +// http://facebook.github.io/jest/docs/en/webpack.html + +module.exports = { + process() { + return 'module.exports = {};'; + }, + getCacheKey() { + // The output is always the same. + return 'cssTransform'; + }, +}; diff --git a/config/jest/fileTransform.js b/config/jest/fileTransform.js new file mode 100644 index 0000000..07010e3 --- /dev/null +++ b/config/jest/fileTransform.js @@ -0,0 +1,30 @@ +'use strict'; + +const path = require('path'); + +// This is a custom Jest transformer turning file imports into filenames. +// http://facebook.github.io/jest/docs/en/webpack.html + +module.exports = { + process(src, filename) { + const assetFilename = JSON.stringify(path.basename(filename)); + + if (filename.match(/\.svg$/)) { + return `module.exports = { + __esModule: true, + default: ${assetFilename}, + ReactComponent: (props) => ({ + $$typeof: Symbol.for('react.element'), + type: 'svg', + ref: null, + key: null, + props: Object.assign({}, props, { + children: ${assetFilename} + }) + }), + };`; + } + + return `module.exports = ${assetFilename};`; + }, +}; diff --git a/config/paths.js b/config/paths.js new file mode 100644 index 0000000..bb13e80 --- /dev/null +++ b/config/paths.js @@ -0,0 +1,57 @@ +'use strict'; + +const path = require('path'); +const fs = require('fs'); +const url = require('url'); + +// Make sure any symlinks in the project folder are resolved: +// https://github.com/facebook/create-react-app/issues/637 +const appDirectory = fs.realpathSync(process.cwd()); +const resolveApp = relativePath => path.resolve(appDirectory, relativePath); + +const envPublicUrl = process.env.PUBLIC_URL; + +function ensureSlash(inputPath, needsSlash) { + const hasSlash = inputPath.endsWith('/'); + if (hasSlash && !needsSlash) { + return inputPath.substr(0, inputPath.length - 1); + } else if (!hasSlash && needsSlash) { + return `${inputPath}/`; + } else { + return inputPath; + } +} + +const getPublicUrl = appPackageJson => + envPublicUrl || require(appPackageJson).homepage; + +// We use `PUBLIC_URL` environment variable or "homepage" field to infer +// "public path" at which the app is served. +// Webpack needs to know it to put the right