50 lines
1.2 KiB
JavaScript
50 lines
1.2 KiB
JavaScript
const nativeModule = require('module')
|
|
const path = require('path')
|
|
const fs = require('fs')
|
|
|
|
function createRequire (filename) {
|
|
// Fallback to process.cwd() if no filename passed
|
|
if (!filename) {
|
|
filename = process.cwd()
|
|
}
|
|
|
|
// If filename is dir, createRequire goes with parent directory, so we need fakepath
|
|
if (isDir(filename)) {
|
|
filename = path.join(filename, 'index.js')
|
|
}
|
|
|
|
// Added in Node v12.2.0
|
|
if (nativeModule.createRequire) {
|
|
return nativeModule.createRequire(filename)
|
|
}
|
|
|
|
// Added in Node v10.12.0 and deprecated since Node v12.2.0
|
|
if (nativeModule.createRequireFromPath) {
|
|
return nativeModule.createRequireFromPath(filename)
|
|
}
|
|
|
|
// Polyfill
|
|
return _createRequire(filename)
|
|
}
|
|
|
|
// Polyfill
|
|
function _createRequire (filename) {
|
|
const mod = new nativeModule.Module(filename, null)
|
|
mod.filename = filename
|
|
mod.paths = nativeModule.Module._nodeModulePaths(path.dirname(filename))
|
|
mod._compile('module.exports = require;', filename)
|
|
return mod.exports
|
|
}
|
|
|
|
function isDir (path) {
|
|
try {
|
|
const stat = fs.lstatSync(path)
|
|
return stat.isDirectory()
|
|
} catch (e) {
|
|
// lstatSync throws an error if path doesn't exist
|
|
return false
|
|
}
|
|
}
|
|
|
|
module.exports = createRequire
|