add server tests, improve readme and types

local/config/src/jest.fileMock.js

@@ -0,0 +1 @@
+module.exports = {};

local/config/src/jest.js

@@ -4,9 +4,16 @@ const resolve = require('./resolve');
 // For a detailed explanation regarding each configuration property, visit:
 // https://jestjs.io/docs/en/configuration.html
 
+const assetFilesModuleNameMapper = {
+  '\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
+    path.resolve(__dirname, 'jest.fileMock.js'),
+  '.*\\.(css|less|scss|sass)$': path.resolve(__dirname, 'jest.fileMock.js'),
+};
+
 /** @type {import('jest').Config} */
 module.exports = {
   coverageDirectory: './.coverage/jest',
+  moduleNameMapper: assetFilesModuleNameMapper,
   projects: [
     {
       displayName: 'node',
@@ -15,9 +22,12 @@ module.exports = {
       clearMocks: true,
       moduleDirectories: resolve.directories,
       moduleFileExtensions: resolve.extensions.map((ext) => ext.replace(/\./, '')),
+      moduleNameMapper: {
+        ...assetFilesModuleNameMapper,
+        ...resolve.paths.jest.moduleNameMapper,
+      },
       testPathIgnorePatterns: ['\\\\node_modules\\\\'],
       setupFilesAfterEnv: [path.resolve(__dirname, './jest.setup.js')],
-      ...resolve.paths.jest,
     },
     {
       displayName: 'jsdom',
@@ -26,6 +36,10 @@ module.exports = {
       clearMocks: true,
       moduleDirectories: resolve.directories,
       moduleFileExtensions: resolve.extensions.map((ext) => ext.replace(/\./, '')),
+      moduleNameMapper: {
+        ...assetFilesModuleNameMapper,
+        ...resolve.paths.jest.moduleNameMapper,
+      },
       testPathIgnorePatterns: ['\\\\node_modules\\\\'],
       setupFilesAfterEnv: [path.resolve(__dirname, './jest.setup.js')],
       ...resolve.paths.jest,