bdde081050
Added test to ensure that release notes are parsed properly Updated to latest dependencies to fix security vulnerability Updated GH Actions Workflow to run test before updating tag Updated README.md to reflect proper whatsnew documentation.
69 lines
2.4 KiB
JavaScript
69 lines
2.4 KiB
JavaScript
'use strict'
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// hoisted due to circular dependency on command.
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module.exports = argsert
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const command = require('./command')()
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const YError = require('./yerror')
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const positionName = ['first', 'second', 'third', 'fourth', 'fifth', 'sixth']
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function argsert (expected, callerArguments, length) {
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// TODO: should this eventually raise an exception.
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try {
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// preface the argument description with "cmd", so
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// that we can run it through yargs' command parser.
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let position = 0
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let parsed = { demanded: [], optional: [] }
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if (typeof expected === 'object') {
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length = callerArguments
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callerArguments = expected
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} else {
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parsed = command.parseCommand(`cmd ${expected}`)
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}
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const args = [].slice.call(callerArguments)
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while (args.length && args[args.length - 1] === undefined) args.pop()
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length = length || args.length
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if (length < parsed.demanded.length) {
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throw new YError(`Not enough arguments provided. Expected ${parsed.demanded.length} but received ${args.length}.`)
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}
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const totalCommands = parsed.demanded.length + parsed.optional.length
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if (length > totalCommands) {
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throw new YError(`Too many arguments provided. Expected max ${totalCommands} but received ${length}.`)
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}
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parsed.demanded.forEach((demanded) => {
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const arg = args.shift()
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const observedType = guessType(arg)
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const matchingTypes = demanded.cmd.filter(type => type === observedType || type === '*')
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if (matchingTypes.length === 0) argumentTypeError(observedType, demanded.cmd, position, false)
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position += 1
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})
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parsed.optional.forEach((optional) => {
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if (args.length === 0) return
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const arg = args.shift()
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const observedType = guessType(arg)
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const matchingTypes = optional.cmd.filter(type => type === observedType || type === '*')
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if (matchingTypes.length === 0) argumentTypeError(observedType, optional.cmd, position, true)
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position += 1
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})
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} catch (err) {
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console.warn(err.stack)
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}
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}
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function guessType (arg) {
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if (Array.isArray(arg)) {
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return 'array'
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} else if (arg === null) {
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return 'null'
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}
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return typeof arg
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}
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function argumentTypeError (observedType, allowedTypes, position, optional) {
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throw new YError(`Invalid ${positionName[position] || 'manyith'} argument. Expected ${allowedTypes.join(' or ')} but received ${observedType}.`)
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}
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