feat(docz-core): add doczrc config watcher on dev

core/docz-core/src/bundler/server.ts

@@ -1,12 +1,20 @@
 import { interpret } from 'xstate'
+import { finds } from 'load-cfg'
+import findUp from 'find-up'
 
 import { Config as Args } from '../config/argv'
 import { ServerHooks as Hooks } from '../lib/Bundler'
 import { devServerMachine } from '../machines/devServer'
 
 export const server = (args: Args) => async (config: any, hooks: Hooks) => ({
   start: async () => {
-    const machine = devServerMachine.withContext({ args, config })
+    const doczrcFilepath = await findUp(finds('docz'))
+    const machine = devServerMachine.withContext({
+      args,
+      config,
+      doczrcFilepath,
+    })
+
     const service = interpret(machine).onTransition(state => {
       args.debug && console.log(state.value)
     })

core/docz-core/src/machines/devServer/context.ts

@@ -3,6 +3,7 @@ import { Config } from '../../config/argv'
 export interface ServerMachineCtx {
   args: Config
   config: any
+  doczrcFilepath: string
   firstInstall?: boolean
   isDoczRepo?: boolean
 }

core/docz-core/src/machines/devServer/index.ts

@@ -8,6 +8,11 @@ const machine = Machine<ServerMachineCtx>({
   id: 'devServer',
   type: 'parallel',
   states: {
+    watch: {
+      invoke: {
+        src: 'watchConfig',
+      },
+    },
     server: {
       initial: 'idle',
       states: {

core/docz-core/src/machines/devServer/services/createResources.ts

@@ -61,7 +61,7 @@ const copyPkgJSON = () => {
   sh.cp(pkgJSON, paths.docz)
 }
 
-const copyDoczRc = async () => {
+export const copyDoczRc = async () => {
   const filepath = await findUp(finds('docz'))
   sh.cp(filepath, paths.docz)
 }

core/docz-core/src/machines/devServer/services/index.ts

@@ -2,3 +2,4 @@ export { createResources } from './createResources'
 export { ensureDirs } from './ensureDirs'
 export { execDevCommand } from './execDevCommand'
 export { installDeps } from './installDeps'
+export { watchConfig } from './watchConfig'

core/docz-core/src/machines/devServer/services/watchConfig.ts

@@ -0,0 +1,19 @@
+import * as path from 'path'
+import sh from 'shelljs'
+
+import { ServerMachineCtx as Context } from '../context'
+import { configWatcher } from '../../../states/config'
+import * as paths from '../../../config/paths'
+
+export const watchConfig = (ctx: Context) => () => {
+  const watcher = configWatcher(ctx.args)
+  const copyDoczrc = () => sh.cp(ctx.doczrcFilepath, paths.docz)
+  const deleteDoczrc = () => sh.rm(path.join(paths.docz, 'doczrc.js'))
+
+  watcher
+    .on('add', copyDoczrc)
+    .on('change', copyDoczrc)
+    .on('unlink', deleteDoczrc)
+
+  return () => watcher.close()
+}

core/docz-core/src/states/config.ts

@@ -48,18 +48,22 @@ const update = async (params: Params, initial: Payload, { config }: Config) => {
 
 export const WATCH_IGNORE = /(((^|[\/\\])\.((?!docz)(.+)))|(node_modules))/
 
-export const state = (config: Config, dev?: boolean): State => {
-  const initial = getInitialConfig(config)
+export const configWatcher = (config: Config) => {
   const glob = config.config || finds('docz')
   const ignored = config.watchIgnore || WATCH_IGNORE
-
   const watcher = chokidar.watch(glob, {
     ignored,
     cwd: paths.root,
     persistent: true,
   })
 
   watcher.setMaxListeners(Infinity)
+  return watcher
+}
+
+export const state = (config: Config, dev?: boolean): State => {
+  const initial = getInitialConfig(config)
+  const watcher = configWatcher(config)
 
   return {
     id: 'config',