chore(v2): remove hardcoded references to config filename

v2/lib/commands/deploy.js

@@ -27,14 +27,16 @@ module.exports = async function deploy(siteDir) {
     process.env.CURRENT_BRANCH ||
     shell.exec('git rev-parse --abbrev-ref HEAD').stdout.trim();
 
-  const siteConfig = loadConfig(siteDir);
+  const siteConfig = loadConfig.loadConfig(siteDir);
   const organizationName =
     process.env.ORGANIZATION_NAME ||
     process.env.CIRCLE_PROJECT_USERNAME ||
     siteConfig.organizationName;
   if (!organizationName) {
     throw new Error(
-      "Missing project organization name. Did you forget to define 'organizationName' in docusaurus.config.js? You may also export it via the organizationName environment variable.",
+      `Missing project organization name. Did you forget to define 'organizationName' in ${
+        loadConfig.configFileName
+      }? You may also export it via the organizationName environment variable.`,
     );
   }
   const projectName =
@@ -43,7 +45,9 @@ module.exports = async function deploy(siteDir) {
     siteConfig.projectName;
   if (!projectName) {
     throw new Error(
-      "Missing project name. Did you forget to define 'projectName' in docusaurus.config.js? You may also export it via the projectName environment variable.",
+      `Missing project name. Did you forget to define 'projectName' in ${
+        loadConfig.configFileName
+      }? You may also export it via the projectName environment variable.`,
     );
   }
 

v2/lib/commands/start.js

@@ -19,6 +19,7 @@ const portfinder = require('portfinder');
 const serve = require('webpack-serve');
 const HtmlWebpackPlugin = require('html-webpack-plugin');
 const load = require('../load');
+const loadConfig = require('../load/config');
 const createClientConfig = require('../webpack/client');
 const {applyConfigureWebpack} = require('../webpack/utils');
 
@@ -50,7 +51,7 @@ module.exports = async function start(siteDir, cliOptions = {}) {
       [
         `../${docsRelativeDir}/**/*.md`,
         'blog/**/*.md',
-        'docusaurus.config.js',
+        loadConfig.configFileName,
         'sidebars.json',
       ],
       {

v2/lib/core/sitemap.js

@@ -5,6 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+const loadConfig = require('../load/config');
 const sitemap = require('sitemap');
 
 module.exports = async function createSitemap({
@@ -22,7 +23,9 @@ module.exports = async function createSitemap({
   const {url: siteUrl} = siteConfig;
 
   if (!siteUrl) {
-    throw new Error('Url in docusaurus.config.js cannot be empty/undefined');
+    throw new Error(
+      `Url in ${loadConfig.configFileName} cannot be empty/undefined`,
+    );
   }
 
   const urls = [];

v2/lib/load/config.js

@@ -6,62 +6,73 @@
  */
 
 const fs = require('fs-extra');
+const _ = require('lodash');
 const path = require('path');
 
-module.exports = function loadConfig(siteDir, deleteCache = true) {
-  const configPath = path.resolve(siteDir, 'docusaurus.config.js');
+const CONFIG_FILE_NAME = 'docusaurus.config.js';
+
+const REQUIRED_FIELDS = [
+  'baseUrl',
+  'favicon',
+  'headerLinks',
+  'headerIcon',
+  'organizationName',
+  'projectName',
+  'title',
+  'tagline',
+  'url',
+];
+
+const OPTIONAL_FIELDS = [
+  'algolia',
+  'chainWebpack',
+  'configureWebpack',
+  'customDocsPath',
+  'customFields',
+  'defaultLanguage',
+  'docsUrl',
+  'githubHost',
+  'highlight',
+  'markdownPlugins',
+];
+
+const DEFAULT_CONFIG = {
+  customDocsPath: 'docs',
+  docsUrl: 'docs',
+};
+
+function formatFields(fields) {
+  return fields.map(field => `'${field}'`).join(', ');
+}
+
+function loadConfig(siteDir, deleteCache = true) {
+  const configPath = path.resolve(siteDir, CONFIG_FILE_NAME);
   if (deleteCache) {
     delete require.cache[configPath];
   }
-  let config = {};
+  let loadedConfig = {};
   if (fs.existsSync(configPath)) {
-    config = require(configPath); // eslint-disable-line
+    loadedConfig = require(configPath); // eslint-disable-line
   }
 
-  const requiredFields = [
-    'title',
-    'tagline',
-    'organizationName',
-    'projectName',
-    'baseUrl',
-    'url',
-    'headerLinks',
-    'headerIcon',
-    'favicon',
-  ];
-  const optionalFields = [
-    'customDocsPath',
-    'defaultLanguage',
-    'highlight',
-    'markdownPlugins',
-    'configureWebpack',
-    'chainWebpack',
-    'docsUrl',
-    'customFields',
-    'githubHost',
-    'algolia',
-  ];
-  const missingFields = requiredFields.filter(field => !config[field]);
-  if (missingFields && missingFields.length > 0) {
+  const missingFields = REQUIRED_FIELDS.filter(
+    field => !_.has(loadedConfig, field),
+  );
+  if (missingFields.length > 0) {
     throw new Error(
-      `${missingFields.join(', ')} fields are missing in docusaurus.config.js`,
+      `The required field(s) ${formatFields(
+        missingFields,
+      )} are missing from ${CONFIG_FILE_NAME}`,
     );
   }
 
-  /* Fill default value */
-  const defaultConfig = {
-    customDocsPath: 'docs',
-    docsUrl: 'docs',
-  };
-  Object.keys(defaultConfig).forEach(field => {
-    if (!config[field]) {
-      config[field] = defaultConfig[field];
-    }
-  });
+  // Merge default config with loaded config.
+  const config = {...DEFAULT_CONFIG, ...loadedConfig};
 
-  /* Build final headerLinks based on siteConfig */
+  // Build final headerLinks based on siteConfig.
   const {headerLinks} = config;
-  // add language drop down to end if location not specified
+
+  // Add language dropdown to end if location not specified.
   let languages = false;
   headerLinks.forEach(link => {
     if (link.languages) {
@@ -73,7 +84,7 @@ module.exports = function loadConfig(siteDir, deleteCache = true) {
   }
   let search = false;
   headerLinks.forEach(link => {
-    // We will add search bar to end if location not specified
+    // Append search bar if location not specified.
     if (link.search) {
       search = true;
     }
@@ -89,18 +100,27 @@ module.exports = function loadConfig(siteDir, deleteCache = true) {
   */
   const {customFields = []} = config;
 
-  // We don't allow unused fields.
-  const allowedFields = [...requiredFields, ...optionalFields, ...customFields];
-  const uselessFields = Object.keys(config).filter(
+  // Don't allow unrecognized fields.
+  const allowedFields = [
+    ...REQUIRED_FIELDS,
+    ...OPTIONAL_FIELDS,
+    ...customFields,
+  ];
+  const unrecognizedFields = Object.keys(config).filter(
     field => !allowedFields.includes(field),
   );
-  if (uselessFields && uselessFields.length > 0) {
+  if (unrecognizedFields && unrecognizedFields.length > 0) {
     throw new Error(
-      `The fields ${uselessFields.join(
-        ', ',
-      )} are not recognized in docusaurus.config.js`,
+      `The field(s) ${formatFields(
+        unrecognizedFields,
+      )} are not recognized in ${CONFIG_FILE_NAME}`,
     );
   }
 
   return config;
+}
+
+module.exports = {
+  configFileName: CONFIG_FILE_NAME,
+  loadConfig,
 };

v2/lib/load/env.js

@@ -8,6 +8,7 @@
 const fs = require('fs-extra');
 const path = require('path');
 const {idx} = require('./utils');
+const loadConfig = require('./config');
 
 module.exports = function loadEnv({siteDir, siteConfig}) {
   // Translation
@@ -36,7 +37,9 @@ module.exports = function loadEnv({siteDir, siteConfig}) {
     );
     if (!defaultLanguage) {
       throw new Error(
-        `Please set a default language in 'docusaurus.config.js' which is enabled in 'languages.js'`,
+        `Please set a default language in ${
+          loadConfig.configFileName
+        } which is enabled in 'languages.js'`,
       );
     }
     translation.defaultLanguage = defaultLanguage;

v2/lib/load/index.js

@@ -17,9 +17,9 @@ const genRoutesConfig = require('./routes');
 
 module.exports = async function load(siteDir) {
   // @tested - siteConfig
-  const siteConfig = loadConfig(siteDir);
+  const siteConfig = loadConfig.loadConfig(siteDir);
   await generate(
-    'docusaurus.config.js',
+    loadConfig.configFileName,
     `export default ${JSON.stringify(siteConfig, null, 2)};`,
   );
 

v2/package.json

@@ -77,6 +77,7 @@
     "koa-range": "^0.3.0",
     "koa-static": "^5.0.0",
     "loader-utils": "^1.1.0",
+    "lodash": "^4.17.11",
     "mini-css-extract-plugin": "^0.4.1",
     "portfinder": "^1.0.13",
     "prismjs": "^1.15.0",

v2/test/load/config.test.js

@@ -6,7 +6,7 @@
  */
 
 import path from 'path';
-import loadConfig from '@lib/load/config';
+import {loadConfig} from '@lib/load/config';
 import loadSetup from '../loadSetup';
 
 describe('loadConfig', () => {
@@ -48,7 +48,7 @@ Object {
     expect(() => {
       loadConfig(siteDir);
     }).toThrowErrorMatchingInlineSnapshot(
-      `"tagline, organizationName, projectName, url, headerLinks, headerIcon, favicon fields are missing in docusaurus.config.js"`,
+      `"The required field(s) 'favicon', 'headerLinks', 'headerIcon', 'organizationName', 'projectName', 'tagline', 'url' are missing from docusaurus.config.js"`,
     );
   });
 
@@ -57,7 +57,7 @@ Object {
     expect(() => {
       loadConfig(siteDir);
     }).toThrowErrorMatchingInlineSnapshot(
-      `"headerLinks, headerIcon, favicon fields are missing in docusaurus.config.js"`,
+      `"The required field(s) 'favicon', 'headerLinks', 'headerIcon' are missing from docusaurus.config.js"`,
     );
   });
 
@@ -66,7 +66,7 @@ Object {
     expect(() => {
       loadConfig(siteDir);
     }).toThrowErrorMatchingInlineSnapshot(
-      `"title, tagline, organizationName, projectName, baseUrl, url, headerLinks, headerIcon, favicon fields are missing in docusaurus.config.js"`,
+      `"The required field(s) 'baseUrl', 'favicon', 'headerLinks', 'headerIcon', 'organizationName', 'projectName', 'title', 'tagline', 'url' are missing from docusaurus.config.js"`,
     );
   });
 });