2021-12-22 13:04:06 +00:00
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import { promises as fsp } from 'fs'
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import { resolve, join, dirname, basename } from 'upath'
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import type { Plugin } from 'vite'
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import Critters from 'critters'
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import template from 'lodash.template'
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2022-03-10 20:25:58 +00:00
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import { genObjectFromRawEntries } from 'knitwork'
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2021-12-22 13:04:06 +00:00
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import htmlMinifier from 'html-minifier'
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import { camelCase } from 'scule'
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import genericMessages from '../templates/messages.json'
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const r = (...path: string[]) => resolve(join(__dirname, '..', ...path))
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const replaceAll = (input, search, replace) => input.split(search).join(replace)
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export const RenderPlugin = () => {
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2022-09-02 08:46:02 +00:00
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return <Plugin> {
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2021-12-22 13:04:06 +00:00
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name: 'render',
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enforce: 'post',
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async writeBundle () {
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const distDir = r('dist')
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const critters = new Critters({ path: distDir })
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2021-12-22 21:27:23 +00:00
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const globby = await import('globby').then(r => r.globby)
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const htmlFiles = await globby(r('dist/templates/**/*.html'))
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2021-12-22 13:04:06 +00:00
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const templateExports = []
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for (const fileName of htmlFiles) {
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// Infer template name
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const templateName = basename(dirname(fileName))
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// eslint-disable-next-line no-console
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console.log('Processing', templateName)
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// Read source template
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let html = await fsp.readFile(fileName, 'utf-8')
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2023-06-20 11:27:42 +00:00
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const isCompleteHTML = html.includes('<!DOCTYPE html>')
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2021-12-22 13:04:06 +00:00
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2023-06-20 11:27:42 +00:00
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// Apply critters to inline styles
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html = await critters.process(html)
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// We no longer need references to external CSS
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html = html.replace(/<link[^>]*>/g, '')
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// Inline SVGs
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const svgSources = Array.from(html.matchAll(/src="([^"]+)"|url([^)]+)/g))
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.map(m => m[1])
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.filter(src => src?.match(/\.svg$/))
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for (const src of svgSources) {
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const svg = await fsp.readFile(r('dist', src), 'utf-8')
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const base64Source = `data:image/svg+xml;charset=utf-8,${encodeURIComponent(svg)}`
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html = replaceAll(html, src, base64Source)
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}
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// Inline our scripts
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const scriptSources = Array.from(html.matchAll(/<script[^>]*src="(.*)"[^>]*>[\s\S]*?<\/script>/g))
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.filter(([_block, src]) => src?.match(/^\/.*\.js$/))
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for (const [scriptBlock, src] of scriptSources) {
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let contents = await fsp.readFile(r('dist', src), 'utf-8')
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contents = replaceAll(contents, '/* empty css */', '').trim()
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html = html.replace(scriptBlock, contents.length ? `<script>${contents}</script>` : '')
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}
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// Minify HTML
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html = htmlMinifier.minify(html, { collapseWhitespace: true })
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2023-06-20 11:27:42 +00:00
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if (!isCompleteHTML) {
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html = html.replace('<html><head></head><body>', '')
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html = html.replace('</body></html>', '')
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}
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2021-12-22 13:04:06 +00:00
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// Load messages
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const messages = JSON.parse(await fsp.readFile(r(`templates/${templateName}/messages.json`), 'utf-8'))
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// Serialize into a js function
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const jsCode = [
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`const _messages = ${JSON.stringify({ ...genericMessages, ...messages })}`,
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2022-05-07 17:58:08 +00:00
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`const _render = ${template(html, { variable: '__var__', interpolate: /{{{?([\s\S]+?)}?}}/g }).toString().replace('__var__', '{ messages }')}`,
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2021-12-22 13:04:06 +00:00
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'const _template = (messages) => _render({ messages: { ..._messages, ...messages } })'
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].join('\n').trim()
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2022-03-10 20:25:58 +00:00
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const templateContent = html
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.match(/<body.*?>([\s\S]*)<\/body>/)?.[0]
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.replace(/(?<=<|<\/)body/g, 'div')
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.replace(/messages\./g, '')
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2022-03-10 20:55:31 +00:00
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.replace(/<script[^>]*>([\s\S]*?)<\/script>/g, '')
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2022-03-10 22:27:16 +00:00
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.replace(/<a href="(\/[^"]*)"([^>]*)>([\s\S]*)<\/a>/g, '<NuxtLink to="$1"$2>\n$3\n</NuxtLink>')
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2022-09-02 08:46:02 +00:00
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// eslint-disable-next-line no-template-curly-in-string
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.replace(/<([^>]+) ([a-z]+)="([^"]*)({{\s*(\w+?)\s*}})([^"]*)"([^>]*)>/g, '<$1 :$2="`$3${$5}$6`"$7>')
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2022-05-07 17:58:08 +00:00
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.replace(/>{{\s*(\w+?)\s*}}<\/[\w-]*>/g, ' v-text="$1" />')
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.replace(/>{{{\s*(\w+?)\s*}}}<\/[\w-]*>/g, ' v-html="$1" />')
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// We are not matching <link> <script> and <meta> tags as these aren't used yet in nuxt/ui
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// and should be taken care of wherever this SFC is used
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const title = html.match(/<title.*?>([\s\S]*)<\/title>/)?.[1].replace(/{{([\s\S]+?)}}/g, (r) => {
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return `\${${r.slice(2, -2)}}`.replace(/messages\./g, 'props.')
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})
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2022-03-10 22:23:54 +00:00
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const styleContent = Array.from(html.matchAll(/<style[^>]*>([\s\S]*?)<\/style>/g)).map(block => block[1]).join('\n')
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2022-08-09 21:25:46 +00:00
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const globalStyles = styleContent.replace(/(\.[^{\d][^{]*?\{[^}]*?\})+.?/g, (r) => {
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const lastChar = r[r.length - 1]
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if (lastChar && !['}', '.', '@', '*', ':'].includes(lastChar)) {
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return ';' + lastChar
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}
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return lastChar
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}).replace(/@media[^{]*?\{\}/g, '')
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const inlineScripts = Array.from(html.matchAll(/<script>([\s\S]*?)<\/script>/g))
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.map(block => block[1])
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.filter(i => !i.includes('const t=document.createElement("link")'))
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const props = genObjectFromRawEntries(Object.entries({ ...genericMessages, ...messages }).map(([key, value]) => [key, {
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type: typeof value === 'string' ? 'String' : typeof value === 'number' ? 'Number' : typeof value === 'boolean' ? 'Boolean' : 'undefined',
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default: JSON.stringify(value)
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}]))
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const vueCode = [
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'<script setup>',
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title && 'import { useHead } from \'#imports\'',
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`const props = defineProps(${props})`,
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title && 'useHead(' + genObjectFromRawEntries([
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['title', `\`${title}\``],
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['script', inlineScripts.map(s => ({ children: `\`${s}\`` }))],
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['style', [{ children: `\`${globalStyles}\`` }]]
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]) + ')',
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'</script>',
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'<template>',
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templateContent,
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'</template>',
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'<style scoped>',
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styleContent.replace(globalStyles, ''),
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2022-03-10 20:25:58 +00:00
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'</style>'
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].filter(Boolean).join('\n').trim()
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2021-12-22 13:04:06 +00:00
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// Generate types
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const types = [
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2023-07-26 09:08:47 +00:00
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`export type DefaultMessages = Record<${Object.keys(messages).map(a => `"${a}"`).join(' | ') || 'string'}, string | boolean | number >`,
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'declare const template: (data: Partial<DefaultMessages>) => string',
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'export { template }'
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].join('\n')
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// Register exports
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templateExports.push({
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exportName: camelCase(templateName),
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templateName,
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types
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})
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// Write new template
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await fsp.writeFile(fileName.replace('/index.html', '.mjs'), `${jsCode}\nexport const template = _template`)
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await fsp.writeFile(fileName.replace('/index.html', '.vue'), vueCode)
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await fsp.writeFile(fileName.replace('/index.html', '.d.ts'), `${types}`)
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// Remove original html file
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await fsp.unlink(fileName)
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await fsp.rmdir(dirname(fileName))
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}
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// Write an index file with named exports for each template
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const contents = templateExports.map(exp => `export { template as ${exp.exportName} } from './templates/${exp.templateName}.mjs'`).join('\n')
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await fsp.writeFile(r('dist/index.mjs'), contents, 'utf8')
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await fsp.writeFile(r('dist/index.d.ts'), replaceAll(contents, /\.mjs/g, ''), 'utf8')
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}
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}
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}
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