prepare for extracting router component to another repo and node package

not_found/not_found.imba

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+tag not_found
+
+	def render
+		<self>
+			<h1> 'Page not found'

pro-router

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+Subproject commit 1e5926668954fe9c56ef16ddfd8b36384032fc38

ref/ref.imba

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+tag ref < a
+
+	prop view
+	prop target
+	prop go
+
+	attr onclick
+
+	def setup
+		@r = R
+
+	def render
+		<self.active=is_active href=link onclick='return false'>
+
+	def is_active
+		var view, params
+		[ view, params ] = @r.split_path(link)
+		view == @r:view && L.isEqual params, @r:params
+
+	def ontap e
+		return if is_active
+		@r.go dom:href
+		window.scrollTo 0, 0
+
+	def link
+		@go || url
+
+	def url
+		if @target
+			var attributes = L.reduce L.concat({}, @target), do |map, el|
+				map[el:type] = el:id
+				map
+		@r.to_path @view, L.defaults attributes || {}, @r:safe_params

router_tag.imba

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+global:Router = require('pro-router')
+require './ref/ref'
+require './switch/switch'
+require './not_found/not_found'
+
+tag router
+
+	def setup
+		@r = R
+		@t = Imba:TAGS
+
+	def render
+		self:__:A = self:__:A || {}
+		<self> ( self:__:A[@r:view] || self:__:A[@r:view] = @t[@r:view.toUpperCase]() ).end

switch/switch.imba

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+require './switch.scss'
+
+tag switch
+
+	prop key
+	prop disable
+
+	def setup
+		@r = R
+
+	def render
+		<self.is_on=is_on .disabled=@disable>
+
+	def is_on
+		@r:params[@key]
+
+	def ontap
+		@r.toggle key unless @disable

switch/switch.scss

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+._switch{ cursor: pointer }