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'use strict'
const common = require('./common')
const galactus = require('galactus')
const fs = require('fs-extra')
const path = require('path')
const ELECTRON_MODULES = [
'electron',
'electron-nightly',
'electron-prebuilt',
'electron-prebuilt-compile'
]
class Pruner {
constructor (dir, quiet) {
this.baseDir = common.normalizePath(dir)
this.quiet = quiet
this.galactus = new galactus.DestroyerOfModules({
rootDirectory: dir,
shouldKeepModuleTest: (module, isDevDep) => this.shouldKeepModule(module, isDevDep)
})
this.walkedTree = false
}
setModules (moduleMap) {
const modulePaths = Array.from(moduleMap.keys()).map(modulePath => `/${common.normalizePath(modulePath)}`)
this.modules = new Set(modulePaths)
this.walkedTree = true
}
async pruneModule (name) {
if (this.walkedTree) {
return this.isProductionModule(name)
} else {
const moduleMap = await this.galactus.collectKeptModules({ relativePaths: true })
this.setModules(moduleMap)
return this.isProductionModule(name)
}
}
shouldKeepModule (module, isDevDep) {
if (isDevDep || module.depType === galactus.DepType.ROOT) {
return false
}
if (ELECTRON_MODULES.includes(module.name)) {
common.warning(`Found '${module.name}' but not as a devDependency, pruning anyway`, this.quiet)
return false
}
return true
}
isProductionModule (name) {
return this.modules.has(name)
}
}
function isNodeModuleFolder (pathToCheck) {
return path.basename(path.dirname(pathToCheck)) === 'node_modules' ||
(path.basename(path.dirname(pathToCheck)).startsWith('@') && path.basename(path.resolve(pathToCheck, `..${path.sep}..`)) === 'node_modules')
}
module.exports = {
isModule: async function isModule (pathToCheck) {
return (await fs.pathExists(path.join(pathToCheck, 'package.json'))) && isNodeModuleFolder(pathToCheck)
},
Pruner: Pruner
}
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