75 lines
1.5 KiB
JavaScript
75 lines
1.5 KiB
JavaScript
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import fs from 'fs'
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import path from 'path'
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import os from 'os'
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function matchObject(item, str) {
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return Object.prototype.toString.call(item)
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=== '[object ' + str + ']'
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}
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function checkStat(name, fn) {
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try {
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return fn(name)
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} catch (err) {
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if (/^(ENOENT|EPERM|EACCES)$/.test(err.code)) {
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if (err.code !== 'ENOENT') {
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console.warn('Warning: Cannot access %s', name)
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}
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return false
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}
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throw err
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}
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}
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export function nil(item) {
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return item == null
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}
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export function array(item) {
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return Array.isArray(item)
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}
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export function emptyObject(item) {
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for (var key in item) {
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return false
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}
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return true
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}
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export function buffer(item) {
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return Buffer.isBuffer(item)
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}
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export function regExp(item) {
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return matchObject(item, 'RegExp')
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}
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export function string(item) {
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return matchObject(item, 'String')
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}
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export function func(item) {
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return typeof item === 'function'
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}
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export function number(item) {
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return matchObject(item, 'Number')
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}
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export function exists(name) {
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return fs.existsSync(name)
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}
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export function file(name) {
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return checkStat(name, function(n) {
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return fs.statSync(n).isFile()
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})
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}
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export function samePath(a, b) {
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return path.resolve(a) === path.resolve(b)
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}
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export function directory(name) {
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return checkStat(name, function(n) {
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return fs.statSync(n).isDirectory()
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})
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}
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export function symbolicLink(name) {
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return checkStat(name, function(n) {
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return fs.lstatSync(n).isSymbolicLink()
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})
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}
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export function windows() {
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return os.platform() === 'win32'
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}
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