First Commit

frontend/webpack/paths.js

@@ -0,0 +1,49 @@
+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/facebookincubator/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(needlePath, needsSlash) {
+  const hasSlash = needlePath.endsWith('/')
+  if (hasSlash && !needsSlash) {
+    return needlePath.substr(needlePath, needlePath.length - 1)
+  } else if (!hasSlash && needsSlash) {
+    return `${needlePath}/`
+  }
+  return needlePath
+}
+
+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 <script> hrefs into HTML even in
+// single-page apps that may serve index.html for nested URLs like /todos/42.
+// We can't use a relative path in HTML because we don't want to load something
+// like /todos/42/static/js/bundle.7289d.js. We have to know the root.
+function getServedPath(appPackageJson) {
+  const publicUrl = getPublicUrl(appPackageJson)
+  const servedUrl =
+    envPublicUrl || (publicUrl ? url.parse(publicUrl).pathname : '/')
+  return ensureSlash(servedUrl, true)
+}
+
+module.exports = {
+  appBuild: resolveApp('build'),
+  appNodeModules: resolveApp('node_modules'),
+  appHtml: resolveApp('public/index.html'),
+  appIndexJs: resolveApp('src/index.js'),
+  appPackageJson: resolveApp('package.json'),
+  appPublic: resolveApp('public'),
+  appSrc: resolveApp('src'),
+  publicUrl: getPublicUrl(resolveApp('package.json')),
+  servedPath: getServedPath(resolveApp('package.json')),
+  yarnLockFile: resolveApp('yarn.lock'),
+}