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// Base class for npm.commands[cmd]
const usageUtil = require('./utils/usage.js')
const ConfigDefinitions = require('./utils/config/definitions.js')
class BaseCommand {
constructor (npm) {
this.wrapWidth = 80
this.npm = npm
}
get name () {
return this.constructor.name
}
get description () {
return this.constructor.description
}
get usage () {
let usage = `npm ${this.constructor.name}\n\n`
if (this.constructor.description)
usage = `${usage}${this.constructor.description}\n\n`
usage = `${usage}Usage:\n`
if (!this.constructor.usage)
usage = `${usage}npm ${this.constructor.name}`
else
usage = `${usage}${this.constructor.usage.map(u => `npm ${this.constructor.name} ${u}`).join('\n')}`
if (this.constructor.params)
usage = `${usage}\n\nOptions:\n${this.wrappedParams}`
// Mostly this just appends aliases, this could be more clear
usage = usageUtil(this.constructor.name, usage)
usage = `${usage}\n\nRun "npm help ${this.constructor.name}" for more info`
return usage
}
get wrappedParams () {
let results = ''
let line = ''
for (const param of this.constructor.params) {
const usage = `[${ConfigDefinitions[param].usage}]`
if (line.length && (line.length + usage.length) > this.wrapWidth) {
results = [results, line].filter(Boolean).join('\n')
line = ''
}
line = [line, usage].filter(Boolean).join(' ')
}
results = [results, line].filter(Boolean).join('\n')
return results
}
usageError (msg) {
if (!msg) {
return Object.assign(new Error(`\nUsage: ${this.usage}`), {
code: 'EUSAGE',
})
}
return Object.assign(new Error(`\nUsage: ${msg}\n\n${this.usage}`), {
code: 'EUSAGE',
})
}
execWorkspaces (args, filters, cb) {
throw Object.assign(
new Error('This command does not support workspaces.'),
{ code: 'ENOWORKSPACES' }
)
}
}
module.exports = BaseCommand
|
