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, } 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 } = color ? chalk : nocolor const style = type === 'extraneous' ? red : type === 'dev' ? yellow : type === 'optional' ? cyan : type === 'peer' ? magenta : type === 'bundled' ? blue : type === 'workspace' ? green : /* istanbul ignore next */ s => s return style(type) } const printNode = (node, color) => { const { name, version, location, extraneous, dev, optional, peer, bundled, isWorkspace, } = 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))) } 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 ${show}`) } const str = '\n' + messages.join('\n') return str.split('\n').join('\n ') } const explainEdge = ({ name, type, bundled, from, spec }, depth, color) => { const { bold } = color ? chalk : nocolor const dep = type === 'workspace' ? bold(relative(from.location, spec.slice('file:'.length))) : `${bold(name)}@"${bold(spec)}"` 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 }