Use ESBuild for frontend build.

Replacing webpack by ESBuild for client code compilation (as in the
official quickstart plugin).

So we can remove deprecated webpack dependencies.

Note: webpack is still used for ConverseJS build.
This may be removed soon.

Related to issue #122.

client/settings.ts

@@ -205,3 +205,5 @@ function launchTests (): void {
 }
 
 launchTests()
+
+export {}

client/tsconfig.json

@@ -13,6 +13,9 @@
 		"noImplicitReturns": true,
 		"strictBindCallApply": true, // should already be true because of strict:true
 		"noUnusedLocals": true,
+		"allowSyntheticDefaultImports": true, // Seems necessary for peertube types to work
+		"isolatedModules": true, // Needed by esbuild https://esbuild.github.io/content-types/#isolated-modules
+		"esModuleInterop": true, // Needed by esbuild https://esbuild.github.io/content-types/#es-module-interop
     "outDir": "../dist/client",
 		"paths": {
 			"shared/*": ["../shared/*"]

client/videowatch/button.ts

@@ -50,7 +50,9 @@ function displayButton ({
   buttonContainer.append(button)
 }
 
+export type {
+  displayButtonOptions
+}
 export {
-  displayButtonOptions,
   displayButton
 }

client/videowatch/buttons.ts

@@ -103,6 +103,8 @@ export {
   closeSVG,
   openChatSVG,
   openBlankChatSVG,
-  shareChatUrlSVG,
+  shareChatUrlSVG
+}
+export type {
   SVGButton
 }

client/videowatch/uri.ts

@@ -66,8 +66,10 @@ function getIframeUri (
   return iframeUriStr
 }
 
+export type {
+  UriOptions
+}
 export {
-  UriOptions,
   getBaseRoute,
   getIframeUri
 }