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const chalk = require('chalk')
const nocolor = {
bold: s => s,
dim: s => s,
red: s => s,
yellow: s => s,
cyan: s => s,
magenta: s => s,
blue: s => s,
green: s => s,
gray: s => s,
}
const { relative } = require('path')
const explainNode = (node, depth, color) =>
printNode(node, color) +
explainDependents(node, depth, color) +
explainLinksIn(node, depth, color)
const colorType = (type, color) => {
const { red, yellow, cyan, magenta, blue, green, gray } = color ? chalk : nocolor
const style = type === 'extraneous' ? red
: type === 'dev' ? yellow
: type === 'optional' ? cyan
: type === 'peer' ? magenta
: type === 'bundled' ? blue
: type === 'workspace' ? green
: type === 'overridden' ? gray
: /* istanbul ignore next */ s => s
return style(type)
}
const printNode = (node, color) => {
const {
name,
version,
location,
extraneous,
dev,
optional,
peer,
bundled,
isWorkspace,
overridden,
} = node
const { bold, dim, green } = color ? chalk : nocolor
const extra = []
if (extraneous) {
extra.push(' ' + bold(colorType('extraneous', color)))
}
if (dev) {
extra.push(' ' + bold(colorType('dev', color)))
}
if (optional) {
extra.push(' ' + bold(colorType('optional', color)))
}
if (peer) {
extra.push(' ' + bold(colorType('peer', color)))
}
if (bundled) {
extra.push(' ' + bold(colorType('bundled', color)))
}
if (overridden) {
extra.push(' ' + bold(colorType('overridden', color)))
}
const pkgid = isWorkspace
? green(`${name}@${version}`)
: `${bold(name)}@${bold(version)}`
return `${pkgid}${extra.join('')}` +
(location ? dim(`\n${location}`) : '')
}
const explainLinksIn = ({ linksIn }, depth, color) => {
if (!linksIn || !linksIn.length || depth <= 0) {
return ''
}
const messages = linksIn.map(link => explainNode(link, depth - 1, color))
const str = '\n' + messages.join('\n')
return str.split('\n').join('\n ')
}
const explainDependents = ({ name, dependents }, depth, color) => {
if (!dependents || !dependents.length || depth <= 0) {
return ''
}
const max = Math.ceil(depth / 2)
const messages = dependents.slice(0, max)
.map(edge => explainEdge(edge, depth, color))
// show just the names of the first 5 deps that overflowed the list
if (dependents.length > max) {
let len = 0
const maxLen = 50
const showNames = []
for (let i = max; i < dependents.length; i++) {
const { from: { name = 'the root project' } } = dependents[i]
len += name.length
if (len >= maxLen && i < dependents.length - 1) {
showNames.push('...')
break
}
showNames.push(name)
}
const show = `(${showNames.join(', ')})`
messages.push(`${dependents.length - max} more ${show}`)
}
const str = '\n' + messages.join('\n')
return str.split('\n').join('\n ')
}
const explainEdge = ({ name, type, bundled, from, spec, rawSpec, overridden }, depth, color) => {
const { bold } = color ? chalk : nocolor
let dep = type === 'workspace'
? bold(relative(from.location, spec.slice('file:'.length)))
: `${bold(name)}@"${bold(spec)}"`
if (overridden) {
dep = `${colorType('overridden', color)} ${dep} (was "${rawSpec}")`
}
const fromMsg = ` from ${explainFrom(from, depth, color)}`
return (type === 'prod' ? '' : `${colorType(type, color)} `) +
(bundled ? `${colorType('bundled', color)} ` : '') +
`${dep}${fromMsg}`
}
const explainFrom = (from, depth, color) => {
if (!from.name && !from.version) {
return 'the root project'
}
return printNode(from, color) +
explainDependents(from, depth - 1, color) +
explainLinksIn(from, depth - 1, color)
}
module.exports = { explainNode, printNode, explainEdge }