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mirror of https://github.com/primer/css.git synced 2024-11-11 04:00:54 +03:00
css/lib/sync.js
2019-02-04 13:50:34 -08:00

83 lines
2.6 KiB
JavaScript

const Metalsmith = require('metalsmith')
const filter = require('metalsmith-filter')
const frontmatter = require('metalsmith-matters')
const watch = require('metalsmith-watch')
const {repository} = require('../package.json')
const addPackageMeta = require('./add-package-meta')
const {extractPackages, writePackagesJSON} = require('./extract-packages-json')
const addSource = require('./add-source')
const filterBy = require('./filter-by')
const parseDocComments = require('./parse-doc-comments')
const rename = require('./rename')
const writeMeta = require('./write-meta')
const gitIgnore = require('./ignore')
module.exports = function sync(options = {}) {
// eslint-disable-next-line no-console
const {log = console.warn} = options
const metaOptions = options.meta || {namespace: 'data', log}
const ns = metaOptions.namespace
// this is what we'll resolve our Promise with later
let files
const metal = Metalsmith(process.cwd())
.source('src')
.destination('pages/css')
.clean(false)
.frontmatter(false)
// ignore anything containing "node_modules" in its path
.ignore(path => path.includes('node_modules'))
// only match files that look like docs
.use(filter(['**/*.md']))
.use(extractPackages())
// convert <!-- %docs -->...<!-- %enddocs --> blocks into frontmatter
.use(parseDocComments({log}))
// parse frontmatter into "data" key of each file
.use(frontmatter(metaOptions))
// only match files that have a "path" key in their frontmatter
.use(filterBy(file => file[ns].path))
.use(writePackagesJSON({path: 'packages.json'}))
// write the source frontmatter key to the relative source path
.use(
addSource({
branch: 'master',
repository,
log
})
)
// copy a subset of fields from the nearest package.json
.use(
addPackageMeta({
fields: ['name', 'description', 'version'],
namespace: ns
})
)
// rename files with their "path" frontmatter key
.use(rename(file => file[ns] ? `${file[ns].path}.md` : true), {log})
.use((_files, metal, done) => {
files = _files
done()
})
// write frontmatter back out to the file
.use(writeMeta(metaOptions))
// keep .gitignore up-to-date with the list of generated files
.use(
gitIgnore({
header: '# DO NOT EDIT: automatically generated by ignore.js'
})
)
if (options.watch) {
metal.use(watch(typeof options.watch === 'object' ? options.watch : {}))
}
return new Promise((resolve, reject) => {
metal.build(error => {
error ? reject(error) : resolve(files)
})
})
}