pinafore/bin/build-inline-script.js
Nolan Lawson 7876f82871
fix: build inline script using Rollup (#761)
* fix: build inline script using Rollup

This reduces code duplication and allows the theme engine to work the
same without modifying the code in two places. It does extra extra deps,
but I tried to keep them to a minimum.

* change code comment

* remove unnecessary constant
2018-12-08 11:21:54 -08:00

61 lines
1.8 KiB
JavaScript

#!/usr/bin/env node
import crypto from 'crypto'
import fs from 'fs'
import pify from 'pify'
import path from 'path'
import { rollup } from 'rollup'
import { terser } from 'rollup-plugin-terser'
import replace from 'rollup-plugin-replace'
import fromPairs from 'lodash-es/fromPairs'
import { themes } from '../routes/_static/themes'
const readFile = pify(fs.readFile.bind(fs))
const writeFile = pify(fs.writeFile.bind(fs))
const themeColors = fromPairs(themes.map(_ => ([_.name, _.color])))
async function main () {
let inlineScriptPath = path.join(__dirname, '../inline-script.js')
let bundle = await rollup({
input: inlineScriptPath,
plugins: [
replace({
'process.browser': true,
'process.env.THEME_COLORS': JSON.stringify(themeColors)
}),
terser({
mangle: true,
compress: true
})
]
})
let { code, map } = await bundle.generate({
format: 'iife',
sourcemap: true
})
let fullCode = `${code}\n//# sourceMappingURL=inline-script.js.map`
let checksum = crypto.createHash('sha256').update(fullCode).digest('base64')
let checksumFilepath = path.join(__dirname, '../inline-script-checksum.json')
await writeFile(checksumFilepath, JSON.stringify({ checksum }), 'utf8')
let html2xxFilepath = path.join(__dirname, '../templates/2xx.html')
let html2xxFile = await readFile(html2xxFilepath, 'utf8')
html2xxFile = html2xxFile.replace(
/<!-- insert inline script here -->[\s\S]+<!-- end insert inline script here -->/,
'<!-- insert inline script here --><script>' + fullCode + '</script><!-- end insert inline script here -->'
)
await writeFile(html2xxFilepath, html2xxFile, 'utf8')
await writeFile(path.resolve(__dirname, '../assets/inline-script.js.map'), map.toString(), 'utf8')
}
main().catch(err => {
console.error(err)
process.exit(1)
})