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const leven = require('leven')
const readJson = require('read-package-json-fast')
const { cmdList } = require('./cmd-list.js')
const didYouMean = async (npm, path, scmd) => {
const bestCmd = cmdList
.filter(cmd => leven(scmd, cmd) < scmd.length * 0.4 && scmd !== cmd)
.map(str => ` npm ${str} # ${npm.commands[str].description}`)
const pkg = await readJson(`${path}/package.json`)
const { scripts } = pkg
// We would already be suggesting this in `npm x` so omit them here
const runScripts = ['stop', 'start', 'test', 'restart']
const bestRun = Object.keys(scripts || {})
.filter(cmd => leven(scmd, cmd) < scmd.length * 0.4 &&
!runScripts.includes(cmd))
.map(str => ` npm run ${str} # run the "${str}" package script`)
const { bin } = pkg
const bestBin = Object.keys(bin || {})
.filter(cmd => leven(scmd, cmd) < scmd.length * 0.4)
.map(str => ` npm exec ${str} # run the "${str}" command from either this or a remote npm package`)
const best = [...bestCmd, ...bestRun, ...bestBin]
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