git ssb

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const nest = require('depnest')
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const values = require('lodash/values')
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const insertCss = require('insert-css')
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const openExternal = require('open-external')
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exports.gives = nest('app.html.app')
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exports.needs = nest({
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  'app.async.catchLinkClick': 'first',
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  'history.sync.push': 'first',
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  'history.obs.location': 'first',
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  'history.obs.store': 'first',
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  'router.sync.router': 'first',
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  'styles.css': 'first'
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})
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exports.create = (api) => {
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  return nest('app.html.app', app)
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  function app () {
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    const css = values(api.styles.css()).join('\n')
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    insertCss(css)
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    api.app.async.catchLinkClick(document.body, (link, { isExternal }) => {
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      if (isExternal) return openExternal(link)
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      api.history.sync.push(link)
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    })
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    api.history.obs.location()(render)
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    api.history.sync.push({ page: 'settings' })
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  }
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  function render (location) {
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    const newView = api.router.sync.router(location)
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    if (!newView) {
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      api.history.obs.store().pop() // remove bogus location
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      return
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    }
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    const oldView = document.body.firstChild
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    oldView
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      ? document.body.replaceChild(newView, oldView)
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      : document.body.appendChild(newView)
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  }
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}
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