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const Npm = require('../npm')
const { distance } = require('fastest-levenshtein')
const pkgJson = require('@npmcli/package-json')
const { commands } = require('./cmd-list.js')
const didYouMean = async (path, scmd) => {
const close = commands.filter(cmd => distance(scmd, cmd) < scmd.length * 0.4 && scmd !== cmd)
let best = []
for (const str of close) {
const cmd = Npm.cmd(str)
best.push(` npm ${str} # ${cmd.description}`)
}
// We would already be suggesting this in `npm x` so omit them here
const runScripts = ['stop', 'start', 'test', 'restart']
try {
const { content: { scripts, bin } } = await pkgJson.normalize(path)
best = best.concat(
Object.keys(scripts || {})
.filter(cmd => distance(scmd, cmd) < scmd.length * 0.4 && !runScripts.includes(cmd))
.map(str => ` npm run ${str} # run the "${str}" package script`),
Object.keys(bin || {})
.filter(cmd => distance(scmd, cmd) < scmd.length * 0.4)
/* eslint-disable-next-line max-len */
.map(str => ` npm exec ${str} # run the "${str}" command from either this or a remote npm package`)
)
} catch (_) {
// gracefully ignore not being in a folder w/ a package.json
}
if (best.length === 0) {
return ''
}
const suggestion =
best.length === 1
? `\n\nDid you mean this?\n${best[0]}`
: `\n\nDid you mean one of these?\n${best.slice(0, 3).join('\n')}`
return suggestion
}
module.exports = didYouMean