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let np = require('path')
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let nfs = require('fs')
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function file() { return np.resolve(process.cwd(), 'src/views.json') }
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let viewsList = []
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let viewPaths = {} // view: [path]
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let pathViews = {} // path: [view]
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function duplicate(obj){ return JSON.parse(JSON.stringify(obj)) }
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function without(el, arr) { return arr.filter(function(e){ if(e != el) { return e } }) }
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module.exports = function proRouterViews() {
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return {
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name: 'pro-router-views',
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transformIndexHtml(html) {
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return html.replace('<head>', '<head><script>window.Views=[];</script>')
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},
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transform: {
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order: 'pre',
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handler(src, id) {
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if (/\.imba$/.test(id)) {
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let modified = false
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let viewRegExp = /tag view-((\w|\S)+)( |\n)/g
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let result = null
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let views_str = ""
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let views = pathViews[id] ||= []
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let missingDeclarations = duplicate(views)
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while(result = viewRegExp.exec(src)) {
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let view = result[1]
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if(view != 'not_found'){
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let paths = viewPaths[view] ||= []
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missingDeclarations = without(view, missingDeclarations)
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if(!views.includes(view)){
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views.push(view)
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if(!paths.includes(id)){
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paths.push(id)
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}
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}
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if((paths[0] == id) && !viewsList.includes(view)){
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viewsList.push(view)
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modified = true
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}
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}
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}
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missingDeclarations.forEach(function(view){
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let paths = viewPaths[view] ||= []
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if(!((paths[0] == id) && (paths.length > 1))){
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paths = without(id, paths)
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views = without(view, views)
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viewsList = without(view, viewsList)
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modified = true
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}
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})
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if(modified)
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nfs.writeFileSync(file(), JSON.stringify(viewsList))
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return { moduleSideEffects: modified }
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}
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}
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}
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}
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}
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