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files >> //opt/alt/alt-nodejs16/root/usr/lib/node_modules/npm/lib/utils/explain-eresolve.js
// this is called when an ERESOLVE error is caught in the exit-handler, // or when there's a log.warn('eresolve', msg, explanation), to turn it // into a human-intelligible explanation of what's wrong and how to fix. const { writeFileSync } = require('fs') const { explainEdge, explainNode, printNode } = require('./explain-dep.js') // expl is an explanation object that comes from Arborist. It looks like: // Depth is how far we want to want to descend into the object making a report. // The full report (ie, depth=Infinity) is always written to the cache folder // at ${cache}/eresolve-report.txt along with full json. const explain = (expl, color, depth) => { const { edge, dep, current, peerConflict, currentEdge } = expl const out = [] const whileInstalling = dep && dep.whileInstalling || current && current.whileInstalling || edge && edge.from && edge.from.whileInstalling if (whileInstalling) { out.push('While resolving: ' + printNode(whileInstalling, color)) } // it "should" be impossible for an ERESOLVE explanation to lack both // current and currentEdge, but better to have a less helpful error // than a crashing failure. if (current) { out.push('Found: ' + explainNode(current, depth, color)) } else if (peerConflict && peerConflict.current) { out.push('Found: ' + explainNode(peerConflict.current, depth, color)) } else if (currentEdge) { out.push('Found: ' + explainEdge(currentEdge, depth, color)) } else /* istanbul ignore else - should always have one */ if (edge) { out.push('Found: ' + explainEdge(edge, depth, color)) } out.push('\nCould not resolve dependency:\n' + explainEdge(edge, depth, color)) if (peerConflict) { const heading = '\nConflicting peer dependency:' const pc = explainNode(peerConflict.peer, depth, color) out.push(heading + ' ' + pc) } return out.join('\n') } // generate a full verbose report and tell the user how to fix it const report = (expl, color, fullReport) => { const orNoStrict = expl.strictPeerDeps ? '--no-strict-peer-deps, ' : '' const fix = `Fix the upstream dependency conflict, or retry this command with ${orNoStrict}--force, or --legacy-peer-deps to accept an incorrect (and potentially broken) dependency resolution.` writeFileSync(fullReport, `# npm resolution error report ${new Date().toISOString()} ${explain(expl, false, Infinity)} ${fix} Raw JSON explanation object: ${JSON.stringify(expl, null, 2)} `, 'utf8') return explain(expl, color, 4) + `\n\n${fix}\n\nSee ${fullReport} for a full report.` } module.exports = { explain, report, }
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