Add names for default exported functions

This should work around the issue in eslint-plugin-react 7.20.4 [1], and
is good practice in any case.

[1] jsx-eslint/eslint-plugin-react#2728

Author: sluukkonen

packages/cli/src/commands/create-mex.ts

@@ -4,7 +4,7 @@ import path from 'path'
 import * as uuid from 'uuid'
 import { examName } from '../utils'
 
-export default async function ({
+export default async function createMexExam({
   exam,
   outdir = path.dirname(exam),
   nsaScripts,

packages/cli/src/commands/create-offline.ts

@@ -2,7 +2,7 @@ import { createOfflineExam } from '@digabi/exam-engine-rendering'
 import { Ora } from 'ora'
 import path from 'path'
 
-export default async function ({
+export default async function createOffline({
   exam,
   outdir = path.dirname(exam),
   media,

packages/cli/src/commands/create-transfer-zip.ts

@@ -8,7 +8,7 @@ import * as uuid from 'uuid'
 import yazl from 'yazl'
 import { examName } from '../utils'
 
-export default async function ({
+export default async function createTransferZip({
   exam,
   outdir = path.dirname(exam),
   spinner,

packages/cli/src/commands/new.ts

@@ -2,7 +2,7 @@ import { promises as fs } from 'fs'
 import { Ora } from 'ora'
 import path from 'path'
 
-export default async function ({ directory }: { directory: string; spinner: Ora }): Promise<string> {
+export default async function newExam({ directory }: { directory: string; spinner: Ora }): Promise<string> {
   const resolveExamFile = (...file: string[]) => path.resolve(directory, ...file)
 
   await assertDirectoryDoesNotExist(directory)

packages/cli/src/commands/preview.ts

@@ -1,7 +1,7 @@
 import { previewExam } from '@digabi/exam-engine-rendering'
 import { Ora } from 'ora'
 
-export default async function ({ exam, spinner }: { exam: string; spinner: Ora }): Promise<string> {
+export default async function preview({ exam, spinner }: { exam: string; spinner: Ora }): Promise<string> {
   spinner.start(`Previewing ${exam}...`)
   const ctx = await previewExam(exam, { openFirefox: true })
   spinner.info(`Server is running at ${ctx.url}`)

packages/rendering/src/exam-loader.ts

@@ -11,7 +11,7 @@ function stringifyModule(module: any, attachments: Attachment[] = []): string {
   return imports + '\nmodule.exports = ' + JSON.stringify(module)
 }
 
-export default async function (this: webpack.loader.LoaderContext, source: string): Promise<void> {
+export default async function examLoader(this: webpack.loader.LoaderContext, source: string): Promise<void> {
   const callback = this.async()!
   const baseDir = path.dirname(this.resourcePath)
   const resolveAttachment = (attachment: string) => path.resolve(baseDir, 'attachments', attachment)