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