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const npm = require('../npm.js')
const didYouMean = require('./did-you-mean.js')
const { dirname } = require('path')
const output = require('./output.js')
const { cmdList } = require('./cmd-list')
module.exports = (valid = true) => {
npm.config.set('loglevel', 'silent')
npm.log.level = 'silent'
output(`
Usage: npm <command>
npm install install all the dependencies in your project
npm install <foo> add the <foo> dependency to your project
npm test run this project's tests
npm run <foo> run the script named <foo>
npm <command> -h quick help on <command>
npm -l display usage info for all commands
npm help <term> search for help on <term> (in a browser)
npm help npm more involved overview (in a browser)
All commands:
${npm.config.get('long') ? usages() : ('\n ' + wrap(cmdList))}
Specify configs in the ini-formatted file:
${npm.config.get('userconfig')}
or on the command line via: npm <command> --key=value
More configuration info: npm help config
Configuration fields: npm help 7 config
npm@${npm.version} ${dirname(dirname(__dirname))}
`)
if (npm.argv.length >= 1)
output(didYouMean(npm.argv[0], cmdList))
if (!valid)
process.exitCode = 1
}
const wrap = (arr) => {
var out = ['']
var l = 0
var line
line = process.stdout.columns
if (!line)
line = 60
else
line = Math.min(60, Math.max(line - 16, 24))
arr.sort(function (a, b) {
return a < b ? -1 : 1
})
.forEach(function (c) {
if (out[l].length + c.length + 2 < line)
out[l] += ', ' + c
else {
out[l++] += ','
out[l] = c
}
})
return out.join('\n ').substr(2)
}
const usages = () => {
// return a string of <command>: <usage>
var maxLen = 0
return cmdList.reduce(function (set, c) {
set.push([c, require(`./${npm.deref(c)}.js`).usage || ''])
maxLen = Math.max(maxLen, c.length)
return set
}, []).sort((a, b) => {
return a[0].localeCompare(b[0])
}).map(function (item) {
var c = item[0]
var usage = item[1]
return '\n ' +
c + (new Array(maxLen - c.length + 2).join(' ')) +
(usage.split('\n').join('\n' + (new Array(maxLen + 6).join(' '))))
}).join('\n')
}
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