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/* eslint-disable max-len */
const { stripVTControlCharacters: strip } = require('node:util')
const { Minipass } = require('minipass')
// This module consumes package data in the following format:
//
// {
// name: String,
// description: String,
// maintainers: [{ username: String, email: String }],
// keywords: String | [String],
// version: String,
// date: Date // can be null,
// }
//
// The returned stream will format this package data
// into a byte stream of formatted, displayable output.
function filter (data, exclude) {
const words = [data.name]
.concat(data.maintainers.map(m => m.username))
.concat(data.keywords || [])
.map(f => f?.trim?.())
.filter(Boolean)
.join(' ')
.toLowerCase()
if (exclude.find(pattern => {
// Treats both /foo and /foo/ as regex searches
if (pattern.startsWith('/')) {
if (pattern.endsWith('/')) {
pattern = pattern.slice(0, -1)
}
return words.match(new RegExp(pattern.slice(1)))
}
return words.includes(pattern)
})) {
return false
}
return true
}
module.exports = (opts) => {
return opts.json ? new JSONOutputStream(opts) : new TextOutputStream(opts)
}
class JSONOutputStream extends Minipass {
#didFirst = false
#exclude
constructor (opts) {
super()
this.#exclude = opts.exclude
}
write (obj) {
if (!filter(obj, this.#exclude)) {
return
}
if (!this.#didFirst) {
super.write('[\n')
this.#didFirst = true
} else {
super.write('\n,\n')
}
return super.write(JSON.stringify(obj))
}
end () {
super.write(this.#didFirst ? ']\n' : '\n[]\n')
super.end()
}
}
class TextOutputStream extends Minipass {
#args
#chalk
#exclude
#parseable
constructor (opts) {
super()
this.#args = opts.args.map(s => s.toLowerCase()).filter(Boolean)
this.#chalk = opts.npm.chalk
this.#exclude = opts.exclude
this.#parseable = opts.parseable
}
write (data) {
if (!filter(data, this.#exclude)) {
return
}
// Normalize
const pkg = {
authors: data.maintainers.map((m) => `${strip(m.username)}`).join(' '),
publisher: strip(data.publisher?.username || ''),
date: data.date ? data.date.toISOString().slice(0, 10) : 'prehistoric',
description: strip(data.description ?? ''),
keywords: [],
name: strip(data.name),
version: data.version,
}
if (Array.isArray(data.keywords)) {
pkg.keywords = data.keywords.map(strip)
} else if (typeof data.keywords === 'string') {
pkg.keywords = strip(data.keywords.replace(/[,\s]+/, ' ')).split(' ')
}
let output
if (this.#parseable) {
output = [pkg.name, pkg.description, pkg.author, pkg.date, pkg.version, pkg.keywords]
.filter(Boolean)
.map(col => ('' + col).replace(/\t/g, ' ')).join('\t')
return super.write(output)
}
const keywords = pkg.keywords.map(k => {
if (this.#args.includes(k)) {
return this.#chalk.cyan(k)
} else {
return k
}
}).join(' ')
let description = []
for (const arg of this.#args) {
const finder = pkg.description.toLowerCase().split(arg.toLowerCase())
let p = 0
for (const f of finder) {
description.push(pkg.description.slice(p, p + f.length))
const word = pkg.description.slice(p + f.length, p + f.length + arg.length)
description.push(this.#chalk.cyan(word))
p += f.length + arg.length
}
}
description = description.filter(Boolean)
let name = pkg.name
if (this.#args.includes(pkg.name)) {
name = this.#chalk.cyan(pkg.name)
} else {
name = []
for (const arg of this.#args) {
const finder = pkg.name.toLowerCase().split(arg.toLowerCase())
let p = 0
for (const f of finder) {
name.push(pkg.name.slice(p, p + f.length))
const word = pkg.name.slice(p + f.length, p + f.length + arg.length)
name.push(this.#chalk.cyan(word))
p += f.length + arg.length
}
}
name = this.#chalk.blue(name.join(''))
}
if (description.length) {
output = `${name}\n${description.join('')}\n`
} else {
output = `${name}\n`
}
if (pkg.publisher) {
output += `Version ${this.#chalk.blue(pkg.version)} published ${this.#chalk.blue(pkg.date)} by ${this.#chalk.blue(pkg.publisher)}\n`
} else {
output += `Version ${this.#chalk.blue(pkg.version)} published ${this.#chalk.blue(pkg.date)} by ${this.#chalk.yellow('???')}\n`
}
output += `Maintainers: ${pkg.authors}\n`
if (keywords) {
output += `Keywords: ${keywords}\n`
}
output += `${this.#chalk.blue(`https://npm.im/${pkg.name}`)}\n`
return super.write(output)
}
}