Root
>
FileSamples
>
sample.js
Download
Delete
sample.js
3,9 KB • JS • jun. 18, 2026 06:54
Copy
Save
'use strict' function isArguments (thingy) { return thingy != null && typeof thingy === 'object' && thingy.hasOwnProperty('callee') } var types = { '*': {label: 'any', check: function () { return true }}, A: {label: 'array', check: function (thingy) { return Array.isArray(thingy) || isArguments(thingy) }}, S: {label: 'string', check: function (thingy) { return typeof thingy === 'string' }}, N: {label: 'number', check: function (thingy) { return typeof thingy === 'number' }}, F: {label: 'function', check: function (thingy) { return typeof thingy === 'function' }}, O: {label: 'object', check: function (thingy) { return typeof thingy === 'object' && thingy != null && !types.A.check(thingy) && !types.E.check(thingy) }}, B: {label: 'boolean', check: function (thingy) { return typeof thingy === 'boolean' }}, E: {label: 'error', check: function (thingy) { return thingy instanceof Error }}, Z: {label: 'null', check: function (thingy) { return thingy == null }} } function addSchema (schema, arity) { var group = arity[schema.length] = arity[schema.length] || [] if (group.indexOf(schema) === -1) group.push(schema) } var validate = module.exports = function (rawSchemas, args) { if (arguments.length !== 2) throw wrongNumberOfArgs(['SA'], arguments.length) if (!rawSchemas) throw missingRequiredArg(0, 'rawSchemas') if (!args) throw missingRequiredArg(1, 'args') if (!types.S.check(rawSchemas)) throw invalidType(0, ['string'], rawSchemas) if (!types.A.check(args)) throw invalidType(1, ['array'], args) var schemas = rawSchemas.split('|') var arity = {} schemas.forEach(function (schema) { for (var ii = 0; ii < schema.length; ++ii) { var type = schema[ii] if (!types[type]) throw unknownType(ii, type) } if (/E.*E/.test(schema)) throw moreThanOneError(schema) addSchema(schema, arity) if (/E/.test(schema)) { addSchema(schema.replace(/E.*$/, 'E'), arity) addSchema(schema.replace(/E/, 'Z'), arity) if (schema.length === 1) addSchema('', arity) } }) var matching = arity[args.length] if (!matching) { throw wrongNumberOfArgs(Object.keys(arity), args.length) } for (var ii = 0; ii < args.length; ++ii) { var newMatching = matching.filter(function (schema) { var type = schema[ii] var typeCheck = types[type].check return typeCheck(args[ii]) }) if (!newMatching.length) { var labels = matching.map(function (schema) { return types[schema[ii]].label }).filter(function (schema) { return schema != null }) throw invalidType(ii, labels, args[ii]) } matching = newMatching } } function missingRequiredArg (num) { return newException('EMISSINGARG', 'Missing required argument #' + (num + 1)) } function unknownType (num, type) { return newException('EUNKNOWNTYPE', 'Unknown type ' + type + ' in argument #' + (num + 1)) } function invalidType (num, expectedTypes, value) { var valueType Object.keys(types).forEach(function (typeCode) { if (types[typeCode].check(value)) valueType = types[typeCode].label }) return newException('EINVALIDTYPE', 'Argument #' + (num + 1) + ': Expected ' + englishList(expectedTypes) + ' but got ' + valueType) } function englishList (list) { return list.join(', ').replace(/, ([^,]+)$/, ' or $1') } function wrongNumberOfArgs (expected, got) { var english = englishList(expected) var args = expected.every(function (ex) { return ex.length === 1 }) ? 'argument' : 'arguments' return newException('EWRONGARGCOUNT', 'Expected ' + english + ' ' + args + ' but got ' + got) } function moreThanOneError (schema) { return newException('ETOOMANYERRORTYPES', 'Only one error type per argument signature is allowed, more than one found in "' + schema + '"') } function newException (code, msg) { var e = new Error(msg) e.code = code if (Error.captureStackTrace) Error.captureStackTrace(e, validate) return e }
Move to Deleted?
will be moved to Deleted.
Cancel
Delete
Rename
Name
Cancel
Rename