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This feature is used for defer loading of images and in future for post cloaking This gives us a polyfill so we can safely use the feature in problem browsers The polyfill supports "polling" but it does not appear we need it yet. If we discover anything odd here, consider setting poll interval per: https://github.com/w3c/IntersectionObserver/tree/master/polyfill ``` var io = new IntersectionObserver(callback); io.POLL_INTERVAL = 100; // Time in milliseconds. ``` Keeping the mutation observer cause we often mutate the DOM
104 lines
2.4 KiB
Ruby
104 lines
2.4 KiB
Ruby
def public_js
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"#{Rails.root}/public/javascripts"
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end
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def vendor_js
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"#{Rails.root}/vendor/assets/javascripts"
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end
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def library_src
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"#{Rails.root}/node_modules"
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end
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task 'javascript:update' do
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require 'uglifier'
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yarn = system("yarn install")
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abort('Unable to run "yarn install"') unless yarn
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dependencies = [
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{
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source: 'ace-builds/src-min',
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destination: 'ace',
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public: true
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}, {
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source: 'chart.js/dist/Chart.min.js',
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public: true
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}, {
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source: 'magnific-popup/dist/jquery.magnific-popup.min.js',
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public: true
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}, {
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source: 'pikaday/pikaday.js',
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public: true
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}, {
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source: 'spectrum-colorpicker/spectrum.js',
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uglify: true,
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public: true
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}, {
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source: 'spectrum-colorpicker/spectrum.css',
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public: true
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}, {
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source: 'favcount/favcount.js'
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}, {
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source: 'handlebars/dist/handlebars.js'
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}, {
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source: 'handlebars/dist/handlebars.runtime.js'
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}, {
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source: 'htmlparser/lib/htmlparser.js'
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}, {
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source: 'jquery-resize/jquery.ba-resize.js'
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}, {
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source: 'jquery.autoellipsis/src/jquery.autoellipsis.js',
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destination: 'jquery.autoellipsis-1.0.10.js'
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}, {
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source: 'jquery-color/jquery.color.js'
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}, {
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source: 'jquery.cookie/jquery.cookie.js'
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}, {
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source: 'jquery/dist/jquery.js'
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}, {
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source: 'jquery-tags-input/src/jquery.tagsinput.js'
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}, {
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source: 'markdown-it/dist/markdown-it.js'
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}, {
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source: 'mousetrap/mousetrap.js'
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}, {
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source: 'resumablejs/resumable.js'
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}, {
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# TODO: drop when we eventually drop IE11, this will land in iOS in version 13
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source: 'intersection-observer/intersection-observer.js'
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}
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]
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start = Time.now
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dependencies.each do |f|
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src = "#{library_src}/#{f[:source]}"
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unless f[:destination]
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filename = f[:source].split("/").last
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else
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filename = f[:destination]
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end
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if f[:public]
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dest = "#{public_js}/#{filename}"
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else
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dest = "#{vendor_js}/#{filename}"
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end
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unless File.exists?(dest)
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STDERR.puts "New dependency added: #{dest}"
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end
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if f[:uglify]
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File.write(dest, Uglifier.new.compile(File.read(src)))
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else
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FileUtils.cp_r(src, dest)
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end
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end
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STDERR.puts "Completed copying dependencies: #{(Time.now - start).round(2)} secs"
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end
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