38 lines
996 B
JavaScript
38 lines
996 B
JavaScript
/*
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command-line-args parses the command line but does not validate what was collected.
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This example demonstrates how the values collected can be validated.
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*/
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'use strict'
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const commandLineArgs = require('../')
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const fs = require('fs')
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const optionDefinitions = [
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{ name: 'help', alias: 'h', type: Boolean },
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{ name: 'files', type: String, multiple: true, defaultOption: true },
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{ name: 'log-level', type: String }
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]
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const options = commandLineArgs(optionDefinitions)
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const valid =
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options.help ||
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(
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/* all supplied files should exist and --log-level should be one from the list */
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options.files &&
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options.files.length &&
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options.files.every(fs.existsSync) &&
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[ 'info', 'warn', 'error', undefined ].includes(options['log-level'])
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)
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console.log('Your options are', valid ? 'valid' : 'invalid')
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console.log(options)
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/*
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Example output:
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$ node example/validate.js package.json README.md
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Your options are valid
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{ files: [ 'package.json', 'README.md' ] }
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*/
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