forked from zhurui/management
73 lines
1.8 KiB
JavaScript
73 lines
1.8 KiB
JavaScript
const semver = require('semver')
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function resolveFallback (request, options) {
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const Module = require('module')
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const isMain = false
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const fakeParent = new Module('', null)
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const paths = []
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for (let i = 0; i < options.paths.length; i++) {
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const path = options.paths[i]
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fakeParent.paths = Module._nodeModulePaths(path)
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const lookupPaths = Module._resolveLookupPaths(request, fakeParent, true)
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if (!paths.includes(path)) paths.push(path)
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for (let j = 0; j < lookupPaths.length; j++) {
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if (!paths.includes(lookupPaths[j])) paths.push(lookupPaths[j])
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}
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}
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const filename = Module._findPath(request, paths, isMain)
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if (!filename) {
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const err = new Error(`Cannot find module '${request}'`)
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err.code = 'MODULE_NOT_FOUND'
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throw err
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}
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return filename
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}
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const resolve = semver.satisfies(process.version, '>=10.0.0')
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? require.resolve
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: resolveFallback
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exports.resolveModule = function (request, context) {
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let resolvedPath
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try {
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resolvedPath = resolve(request, {
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paths: [context]
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})
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} catch (e) {}
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return resolvedPath
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}
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exports.loadModule = function (request, context, force = false) {
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const resolvedPath = exports.resolveModule(request, context)
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if (resolvedPath) {
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if (force) {
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clearRequireCache(resolvedPath)
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}
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return require(resolvedPath)
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}
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}
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exports.clearModule = function (request, context) {
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const resolvedPath = exports.resolveModule(request, context)
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if (resolvedPath) {
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clearRequireCache(resolvedPath)
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}
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}
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function clearRequireCache (id, map = new Map()) {
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const module = require.cache[id]
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if (module) {
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map.set(id, true)
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// Clear children modules
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module.children.forEach(child => {
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if (!map.get(child.id)) clearRequireCache(child.id, map)
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})
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delete require.cache[id]
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}
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}
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