Update src/steps/download.ts

Co-authored-by: Jared Allard <jaredallard@users.noreply.github.com>

.github/FUNDING.yml

@@ -0,0 +1 @@
+custom: https://www.paypal.me/calebsboyd

.github/workflows/auto-close-no-response.yml

@@ -0,0 +1,21 @@
+name: No Response
+
+# Both `issue_comment` and `scheduled` event types are required for this Action
+# to work properly.
+on:
+  issue_comment:
+    types: [created]
+  schedule:
+    # 9AM Central
+    - cron: '0 14 * * *'
+
+jobs:
+  noResponse:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: lee-dohm/no-response@v0.5.0
+        with:
+          token: ${{ github.token }}
+          closeComment: 'Closed awaiting response from OP, please open a new issue with the requested information and/or examples'
+          daysUntilClose: 21
+          responseRequiredLabel: more-information-needed

README.md

@@ -1,3 +1,4 @@
+
 <p align="center"><img src="https://cloud.githubusercontent.com/assets/2391349/23598327/a17bb68a-01ee-11e7-8f55-88a5fc96e997.png" /></p>
 
 <p align="center">
@@ -5,9 +6,10 @@
   <a href="https://www.npmjs.com/package/nexe"><img src="https://img.shields.io/npm/dt/nexe.svg" alt="Downloads"></a>
   <a href="https://www.npmjs.com/package/nexe"><img src="https://img.shields.io/npm/v/nexe.svg" alt="Version"></a>
   <a href="https://www.npmjs.com/package/nexe"><img src="https://img.shields.io/npm/l/nexe.svg" alt="License"></a>
+  <a href="https://discord.gg/2qTH52zNcZ"><img src="https://discordapp.com/api/guilds/814334925049561168/widget.png?style=shield"></a>
 </p>
 
-<p align="center"><code>npm i nexe -g</code></p>
+<p align="center">Install:&nbsp<code>npm i nexe -g</code></p>
 <p align="center">Nexe is a command-line utility that compiles your Node.js application into a single executable file.</p>
 
 <p align="center">
@@ -47,10 +49,39 @@ For more CLI options see: `nexe --help`
 
 Additional files or resources can be added to the binary by passing `-r "glob/pattern/**/*"`. These included files can be read in the application by using `fs.readFile` or `fs.readFileSync`.
 
-## Compiling Node
+## Compiling the nexe Executable
 
-By default `nexe` will attempt to download a pre-built executable. However, It may be unavailable ([github releases](https://github.com/nexe/nexe/releases))
+By default `nexe` will attempt to download a pre-built executable. These are listed on the [releases page](https://github.com/nexe/nexe/releases/tag/v3.3.3). The exact version you want may be unavailable or you may want to customize what is built. See `nexe --help` for a list of options available when passing the [`--build`](#build-boolean) option. You will also need to ensure your environment is setup to [build node](https://github.com/nodejs/node/blob/master/BUILDING.md). Note: the `python` binary in your path should be an acceptable version of python 3; you can create a [symlink](https://github.com/nexe/nexe/issues/354#issuecomment-319874486) or use the `--python` parameter (e.g. `nexe --build --python=$(which python3)`).
-or you may want to customize what is built. See `nexe --help` for a list of options available when passing the [`--build`](#build-boolean) option. You will also need to ensure your environment is setup to [build node](https://github.com/nodejs/node/blob/master/BUILDING.md). Note: the `python` binary in your path should be an acceptable version of python 2. eg. Systems that have python2 will need to create a [symlink](https://github.com/nexe/nexe/issues/354#issuecomment-319874486).
+
+### Linux and macOS
+[Prerequisites & details](https://github.com/nodejs/node/blob/master/BUILDING.md#unix-and-macos)
+
+### Windows
+
+The fastest and most reliable way to get started is simply to run the commands below. If you'd rather read the details or perform a manual install of the prerequisites, [you can find that here](https://github.com/nodejs/node/blob/master/BUILDING.md#windows).
+
+The instructions below are the fastest and most reliable method.
+Run the following sets of commands with PowerShell (running as Administrator).
+
+**Install all required build tools (and dependencies):**
+```
+Set-ExecutionPolicy Unrestricted -Force
+iex ((New-Object System.Net.WebClient).DownloadString('https://boxstarter.org/bootstrapper.ps1'))
+get-boxstarter -Force
+Install-BoxstarterPackage https://raw.githubusercontent.com/nodejs/node/master/tools/bootstrap/windows_boxstarter -DisableReboots
+```
+
+**Set config:**
+```
+npm config set msvs_version 2019
+npm config set python python3.8
+```
+Where `2019` is the version of Visual Studio you have (if you have it).
+
+**Notes:**
+- The above works and has been tested with node.js `14.5.4` and `15.8.0`
+- Python 3 and Python 2 can coexist and `nexe` will still work, considering the `set config` area above
+- Don't use `npm install windows-build-tools` unless you're having some type of issue, because the above commands configures and installs the latest/preferred too.
 
 ## Node.js API
 
@@ -117,11 +148,13 @@ compile({
     - default: true
  - #### `build: boolean`
     - Build node from source, passing this flag tells nexe to download and build from source. Subsequently using this flag will cause nexe to use the previously built binary. To rebuild, first add [`--clean`](#clean-boolean)
- - #### `asset: string`
+ - #### `remote: string`
-    - Provide a pre-built nexe binary asset, this can either be an http or https URL or a file path.
+    - Provide a custom remote location for fetching pre-built nexe binaries from. This can either be an HTTP or HTTPS URL.
     - default: `null`
+ - #### `asset: string`
+    - Provide a pre-built nexe binary asset, this is a file path is resolved relative to cwd.
  - #### `python: string`
-    - On Linux this is the path pointing to your python2 executable
+    - On Linux this is the path pointing to your python3 executable
     - On Windows this is the directory where `python` can be accessed
     - default: `null`
  - #### `flags: string[]`
@@ -203,7 +236,7 @@ For examples, see the built in patches: [src/patches](src/patches).
     - Quickly perform a replace in a file within the downloaded Node.js source. The rest arguments are passed along to `String.prototype.replace`
  - `readFileAsync(filename: string): Promise<NexeFile>`
     - Access (or create) a file within the downloaded Node.js source.
- - `addResource(filename: string, contents: Buffer): void`
+ - `addResource(filename: string, contents: Buffer): Promise<void>`
     - Add a resource to the nexe bundle
  - `files: NexeFile[]`
     - The cache of the currently read, modified, or created files within the downloaded Node.js source.
@@ -217,9 +250,20 @@ Any modifications made to `NexeFile#contents` will be maintained in the cache _w
 
 ## Native Modules
 
-TODO
+In order to use native modules, the native binaries must be shipped alongside the binary generated by nexe.
 
-- [ ] Implement support for `node-pre-gyp#find`.
+## Troubleshooting
+
+`Error: Entry file "" not found!` means you need to provide `nexe` with input. Either use `-i` or pipe data to it.
+
+`Error: https://github.com/nexe/nexe/releases/download/v3.3.3/windows-x64-15.8.0 is not available, create it using the --build flag` or similar message means that it either:
+- You are having networking issues such as the download being blocked
+- You should specify the target so `nexe` knows what version of the executable to use.
+	- See the [releases page](https://github.com/nexe/nexe/releases) to find the executable's version number
+	- Example
+		- `nexe -i "app.js" -r "public/**/*.html" -o "dist/myApp.exe" -t x64-14.15.3`
+		- where `-i` specifies the input, `-r` specifies resources to embed, `-o` specifies the output, `-t` specifies the target.
+	- Alternatively you can compile the executable yourself, see that section for details
 
 ## Contributing
 
@@ -227,20 +271,10 @@ Building
 ```
 $ git clone git@github.com:nexe/nexe.git
 $ cd nexe
-$ yarn
+$ npm i && npm run build
 ```
 
 Testing
 ```
 $ npm test
 ```
-
-## Maintainers
-
-[![Jared Allard](https://avatars.githubusercontent.com/u/2391349?s=130)](https://jaredallard.me/) | [![Caleb Boyd](https://avatars.githubusercontent.com/u/5818726?s=130)](https://github.com/calebboyd) | [![Dustin Greif](https://avatars.githubusercontent.com/u/3026298?s=130)](https://github.com/dgreif) |
----|---|---|
-[Jared Allard](https://github.com/jaredallard) | [Caleb Boyd](http://github.com/calebboyd) |  [Dustin Greif](https://github.com/dgreif) |
-
-### Former
-
-- [Craig Condon](http://crcn.codes/)

azure-pipelines.yml

@@ -19,13 +19,13 @@ schedules:
       - master
 jobs:
 - job: BaseBuild
-  timeoutInMinutes: 180
+  timeoutInMinutes: 360
   strategy:
     matrix:
       linux:
         imageName: 'ubuntu-16.04'
       mac:
-        imageName: 'macos-10.13'
+        imageName: 'macos-10.15'
       windows_2017:
         imageName: 'vs2017-win2016'
       windows_2015:
@@ -43,11 +43,11 @@ jobs:
   - task: NodeTool@0
     displayName: Install Node
     inputs:
-      versionSpec: '10.x'
+      versionSpec: '12.x'
   - script: sudo apt-get update && sudo apt-get install -y libc6-dev-i386 gcc-multilib g++-multilib
     condition: contains(variables['Agent.JobName'], 'linux')
     displayName: Install Linux build dependencies
-  - script: choco install visualcpp-build-tools --version 14.0.25420.1 -fy && npm config set msvs_version 2015
+  - script: npm config set msvs_version 2015
     condition: contains(variables['Agent.JobName'], 'windows_2015')
     displayName: Install Windows build dependencies
   - script: npm install && npm run ci:build
@@ -55,10 +55,10 @@ jobs:
     env:
       GITHUB_TOKEN: $(PersonalGithubToken)
       NEXE_VERBOSE: $(NEXE_VERBOSE)
+      msbuild_args: /3G
     condition: not(contains(variables['Agent.JobName'], 'windows'))
   - powershell: |
-      iex (new-object net.webclient).downloadstring('https://get.scoop.sh')
+      choco install nasm
-      scoop install nasm
       npm install
       npm run ci:build
     displayName: Build Nexe (Windows)
@@ -66,3 +66,8 @@ jobs:
     env:
       GITHUB_TOKEN: $(PersonalGithubToken)
       NEXE_VERBOSE: $(NEXE_VERBOSE)
+  - script: npm run test:integration
+    displayName: Test built artefact
+    env:
+      NEXE_VERBOSE: $(NEXE_VERBOSE)
+      BUILD: ''

package.json

@@ -2,7 +2,7 @@
   "name": "nexe",
   "description": "Create a single executable out of your Node.js application",
   "license": "MIT",
-  "version": "4.0.0-beta.3",
+  "version": "5.0.0-beta.1",
   "contributors": [
     "Craig Condon <craig.j.condon@gmail.com> (http://crcn.io)",
     "Jared Allard <jaredallard@outlook.com>",
@@ -11,10 +11,14 @@
   "scripts": {
     "ci:build": "ts-node tasks/build",
     "test": "mocha",
+    "test:integration": "node index.js --target 14.15.3 -i test/integration/index.js -o integration-tests --verbose -r test/integration -r node_modules/ && npm run test:integration:run",
+    "test:integration:run": "run-script-os",
+    "test:integration:run:win32": "integration-tests.exe",
+    "test:integration:run:default": "./integration-tests",
     "lint": "tslint \"{src,plugins,tasks}/**/*.ts\" --fix",
     "prepare": "npm run lint && npm run build && npm test",
     "prebuild": "rimraf lib",
-    "build": "tsc --declaration",
+    "build": "tsc --declaration && tsc -p tasks && webpack",
     "postbuild": "ts-node tasks/post-build"
   },
   "repository": {
@@ -30,47 +34,59 @@
     "nexe": "index.js"
   },
   "engines": {
-    "node": ">=6"
+    "node": ">=10"
+  },
+  "mocha": {
+    "spec": "./test/**/*.spec.ts",
+    "checkLeaks": true,
+    "require": [
+      "ts-node/register"
+    ]
   },
   "dependencies": {
     "@calebboyd/semaphore": "^1.3.1",
-    "app-builder": "^5.2.0",
+    "@yarnpkg/fslib": "^3.0.0-rc.43",
+    "@yarnpkg/libzip": "^3.0.0-rc.43",
+    "app-builder": "^7.0.4",
+    "archiver": "^5.3.1",
     "caw": "^2.0.1",
     "chalk": "^2.4.2",
-    "cherow": "1.6.9",
+    "download": "^8.0.0",
-    "download": "^7.1.0",
+    "globby": "^11.0.2",
-    "globby": "^10.0.1",
+    "got": "^12.6.0",
-    "got": "^9.6.0",
+    "meriyah": "^4.3.5",
-    "minimist": "^1.2.0",
+    "minimist": "^1.2.8",
-    "mkdirp": "^0.5.1",
+    "mkdirp": "^1.0.4",
-    "multistream": "^4.0.0",
+    "multistream": "^4.1.0",
     "ora": "^3.4.0",
-    "pify": "^4.0.1",
+    "resolve-dependencies": "^6.0.9",
-    "resolve-dependencies": "^3.0.2",
+    "rimraf": "^3.0.2",
-    "rimraf": "^3.0.0"
+    "run-script-os": "^1.1.6",
+    "webpack-config-prefabs": "0.0.5"
   },
   "devDependencies": {
-    "@types/chai": "^4.2.3",
+    "@types/archiver": "^5.3.2",
-    "@types/download": "^6.2.4",
+    "@types/chai": "^4",
-    "@types/execa": "^2.0.0",
+    "@types/download": "^8",
-    "@types/globby": "^9.1.0",
+    "@types/globby": "^9",
-    "@types/got": "^9.6.7",
+    "@types/lodash": "^4.14.192",
-    "@types/minimist": "^1.2.0",
+    "@types/minimist": "^1.2.2",
-    "@types/mkdirp": "^0.5.2",
+    "@types/mkdirp": "^1.0.2",
-    "@types/mocha": "^5.2.7",
+    "@types/mocha": "^10.0.1",
-    "@types/multistream": "^2.1.1",
+    "@types/multistream": "^4.1.0",
     "@types/ora": "^3.2.0",
-    "@types/pify": "3.0.2",
+    "@types/rimraf": "3.0.2",
-    "@types/rimraf": "2.0.2",
+    "@types/semver": "^7.3.13",
-    "@types/semver": "^6.0.2",
+    "chai": "^4.3.7",
-    "chai": "^4.2.0",
+    "execa": "^5.1.1",
-    "execa": "^2.1.0",
+    "lodash": "^4.17.21",
-    "mocha": "^6.2.1",
+    "mocha": "^10.2.0",
-    "prettier": "^1.18.2",
+    "prettier": "^2.8.7",
-    "ts-node": "^8.4.1",
+    "ts-node": "^10.9.1",
-    "tslint": "^5.20.0",
+    "tslint": "^6.1.1",
     "tslint-config-prettier": "^1.18.0",
-    "tslint-plugin-prettier": "^2.0.1",
+    "tslint-plugin-prettier": "^2.3.0",
-    "typescript": "^3.6.3"
+    "typescript": "^5.0.3",
+    "webpack-cli": "^5.0.1"
   }
 }

src/compiler.ts

@@ -11,12 +11,16 @@ import {
   dequote,
   isWindows,
   bound,
-  semverGt
+  semverGt,
+  wrap,
 } from './util'
 import { NexeOptions, version } from './options'
 import { NexeTarget } from './target'
+import { PassThrough, Readable, Stream, Transform } from 'stream'
 import MultiStream = require('multistream')
 import { Bundle, toStream } from './fs/bundle'
+import { File } from 'resolve-dependencies'
+import { FactoryStream, LazyStream } from 'multistream'
 
 const isBsd = Boolean(~process.platform.indexOf('bsd'))
 const make = isWindows ? 'vcbuild.bat' : isBsd ? 'gmake' : 'make'
@@ -27,7 +31,7 @@ type StringReplacer = (match: string) => string
 export interface NexeFile {
   filename: string
   absPath: string
-  contents: string
+  contents: string | Buffer
 }
 
 export { NexeOptions }
@@ -108,12 +112,10 @@ export class NexeCompiler {
     //SOMEDAY iterate over multiple targets with `--outDir`
     this.targets = options.targets as NexeTarget[]
     this.target = this.targets[0]
-    if (options.asset && options.asset.startsWith('http')) {
+    if (!/https?\:\/\//.test(options.remote)) {
-      this.remoteAsset = options.asset
+      throw new NexeError(`Invalid remote URI scheme (must be http or https): ${options.remote}`)
-    } else {
-      this.remoteAsset =
-        'https://github.com/nexe/nexe/releases/download/v3.0.0/' + this.target.toString()
     }
+    this.remoteAsset = options.remote + this.target.toString()
     this.src = join(this.options.temp, this.target.version)
     this.configureScript = configure + (semverGt(this.target.version, '10.10.0') ? '.py' : '')
     this.nodeSrcBinPath = isWindows
@@ -136,31 +138,23 @@ export class NexeCompiler {
   }
 
   @bound
-  addResource(absoluteFileName: string, content?: Buffer | string) {
+  addResource(absoluteFileName: string, content?: Buffer | string | File) {
     return this.bundle.addResource(absoluteFileName, content)
   }
 
-  get binaryConfiguration() {
-    return { resources: this.bundle.index }
-  }
-
-  get resourceSize() {
-    return this.bundle.blobSize
-  }
-
   @bound
   async readFileAsync(file: string) {
     this.assertBuild()
-    let cachedFile = this.files.find(x => normalize(x.filename) === normalize(file))
+    let cachedFile = this.files.find((x) => normalize(x.filename) === normalize(file))
     if (!cachedFile) {
       const absPath = join(this.src, file)
       cachedFile = {
         absPath,
         filename: file,
-        contents: await readFileAsync(absPath, 'utf-8').catch(x => {
+        contents: await readFileAsync(absPath, 'utf-8').catch((x) => {
           if (x.code === 'ENOENT') return ''
           throw x
-        })
+        }),
       }
       this.files.push(cachedFile)
     }
@@ -176,11 +170,11 @@ export class NexeCompiler {
   @bound
   async replaceInFileAsync(file: string, replace: string | RegExp, value: string | StringReplacer) {
     const entry = await this.readFileAsync(file)
-    entry.contents = entry.contents.replace(replace, value as any)
+    entry.contents = entry.contents.toString().replace(replace, value as any)
   }
 
   @bound
-  async setFileContentsAsync(file: string, contents: string) {
+  async setFileContentsAsync(file: string, contents: string | Buffer) {
     const entry = await this.readFileAsync(file)
     entry.contents = contents
   }
@@ -198,7 +192,7 @@ export class NexeCompiler {
   }
 
   public getNodeExecutableLocation(target?: NexeTarget) {
-    if (this.options.asset && !this.options.asset.startsWith('http')) {
+    if (this.options.asset) {
       return resolve(this.options.cwd, this.options.asset)
     }
     if (target) {
@@ -211,11 +205,11 @@ export class NexeCompiler {
     if (this.log.verbose) {
       this.compileStep!.pause()
     }
-    return new Promise((resolve, reject) => {
+    return new Promise<void>((resolve, reject) => {
       spawn(command, args, {
         cwd: this.src,
         env: this.env,
-        stdio: this.log.verbose ? 'inherit' : 'ignore'
+        stdio: this.log.verbose ? 'inherit' : 'ignore',
       })
         .once('error', (e: Error) => {
           if (this.log.verbose) {
@@ -242,7 +236,7 @@ export class NexeCompiler {
     }
     return this._runBuildCommandAsync(this.env.PYTHON || 'python', [
       this.configureScript,
-      ...this.options.configure
+      ...this.options.configure,
     ])
   }
 
@@ -261,10 +255,7 @@ export class NexeCompiler {
     return createReadStream(this.getNodeExecutableLocation())
   }
 
-  private async _shouldCompileBinaryAsync(
+  private async _shouldCompileBinaryAsync(binary: NodeJS.ReadableStream | null, location: string) {
-    binary: NodeJS.ReadableStream | null,
-    location: string | undefined
-  ) {
     //SOMEDAY combine make/configure/vcBuild/and modified times of included files
     const { snapshot, build } = this.options
 
@@ -298,22 +289,40 @@ export class NexeCompiler {
     return [this.shims.join(''), this.startup].join(';')
   }
 
-  private _assembleDeliverable(binary: NodeJS.ReadableStream) {
+  private async _assembleDeliverable(binary: Readable) {
     if (!this.options.mangle) {
       return binary
     }
+    const launchCode = this.code()
+    const codeSize = Buffer.byteLength(launchCode)
+    const sentinel = Buffer.from('<nexe~~sentinel>')
 
-    const startup = this.code(),
+    let vfsSize = 0
-      codeSize = Buffer.byteLength(startup)
+    const streams = [
-
-    const lengths = Buffer.from(Array(16))
-    lengths.writeDoubleLE(codeSize, 0)
-    lengths.writeDoubleLE(this.bundle.blobSize, 8)
-    return new (MultiStream as any)([
       binary,
-      toStream(startup),
+      toStream(launchCode),
-      this.bundle.toStream(),
+      this.bundle.toStream().pipe(
-      toStream(Buffer.concat([Buffer.from('<nexe~~sentinel>'), lengths]))
+        new Transform({
-    ])
+          transform: (chunk, _, cb) => {
+            vfsSize || this.bundle.finalize()
+            chunk && (vfsSize += chunk.length)
+            cb(null, chunk)
+          },
+        })
+      ),
+    ]
+
+    let done = false
+    return new MultiStream((cb) => {
+      if (done) cb(null, null)
+      else if (streams.length) cb(null, streams.shift() as Readable)
+      else {
+        done = true
+        const trailers = Buffer.alloc(16)
+        trailers.writeDoubleLE(codeSize, 0)
+        trailers.writeDoubleLE(vfsSize, 8)
+        cb(null, toStream(Buffer.concat([sentinel, trailers])))
+      }
+    })
   }
 }

src/fs/SnapshotZipFS.ts

@@ -0,0 +1,395 @@
+import { Libzip } from '@yarnpkg/libzip'
+import {
+  FakeFS,
+  PortablePath,
+  RmdirOptions,
+  OpendirOptions,
+  BasePortableFakeFS,
+  Dirent,
+  Dir,
+  MkdirOptions,
+  FSPath,
+  ppath,
+  npath,
+  Filename,
+  CustomDir,
+} from '@yarnpkg/fslib'
+import { ZipFS, ZipOpenFS } from '@yarnpkg/libzip'
+import { resolve, toNamespacedPath } from 'path'
+import { constants } from 'fs'
+
+export type SnapshotZipFSOptions = {
+  baseFs: FakeFS<PortablePath>
+  libzip: Libzip | (() => Libzip)
+  zipFs: ZipFS
+  root: string
+}
+
+const uniqBy = (arr: Array<string | Dirent>, pick: (...arg: any[]) => any) => {
+  const seen = new Set()
+  return arr.filter((x) => {
+    const key = pick(x)
+    if (seen.has(key)) return false
+    seen.add(key)
+    return true
+  })
+}
+function uniqReaddir(arr: Array<string | Dirent>) {
+  return uniqBy(arr, (s: string | Dirent) => (typeof s === 'string' ? s : s.name))
+}
+
+export class SnapshotZipFS extends BasePortableFakeFS {
+  zipFs: ZipFS
+  baseFs: FakeFS<PortablePath>
+  root: string
+  magic: number
+  constructor(opts: SnapshotZipFSOptions) {
+    super()
+    this.zipFs = opts.zipFs
+    this.baseFs = opts.baseFs
+    this.root = opts.root
+    this.magic = 0x2a << 24
+  }
+  private readonly fdMap: Map<number, [ZipFS, number]> = new Map()
+  private nextFd = 3
+
+  async makeCallPromise<T>(
+    p: FSPath<PortablePath>,
+    discard: () => Promise<T>,
+    accept: (zipFS: ZipFS, zipInfo: { subPath: PortablePath }) => Promise<T>,
+    { requireSubpath = true }: { requireSubpath?: boolean } = {}
+  ): Promise<T> {
+    if (typeof p !== 'string') return await discard()
+
+    const normalizedP = this.resolve(p)
+
+    const zipInfo = this.findZip(normalizedP)
+    if (!zipInfo) return await discard()
+
+    if (requireSubpath && zipInfo.subPath === '/') return await discard()
+
+    return await accept(this.zipFs, zipInfo)
+  }
+
+  makeCallSync<T>(
+    p: FSPath<PortablePath>,
+    discard: () => T,
+    accept: (zipFS: ZipFS, zipInfo: { subPath: PortablePath; archivePath: string }) => T,
+    { requireSubpath = true }: { requireSubpath?: boolean } = {}
+  ): T {
+    if (typeof p !== 'string') return discard()
+
+    const normalizedP = this.resolve(p)
+
+    const zipInfo = this.findZip(normalizedP)
+    if (!zipInfo) return discard()
+
+    if (requireSubpath && zipInfo.subPath === '/') return discard()
+
+    return accept(this.zipFs, { archivePath: '', ...zipInfo })
+  }
+
+  async realpathPromise(p: PortablePath) {
+    return await this.realpathSync(p)
+  }
+
+  realpathSync(p: PortablePath) {
+    return this.makeCallSync(
+      p,
+      () => this.baseFs.realpathSync(p),
+      (zipFs, { subPath }) => {
+        if (zipFs.lstatSync(subPath).isSymbolicLink()) {
+          return zipFs.realpathSync(subPath)
+        } else {
+          // return the original path in case it wasn't under /snapshot, e.g. if it was for a node module - otherwise the node module parent path is the wrong one (and other things resolve relative to that)
+          return p
+        }
+      }
+    )
+  }
+
+  findZip(p: PortablePath) {
+    p = this.resolve(p)
+    const snapshotPP = npath.toPortablePath('/snapshot')
+    const pathsToTry = Array.from(
+      new Set([
+        p,
+        resolve('/snapshot', p),
+        ppath.resolve(
+          snapshotPP,
+          npath.toPortablePath(
+            npath.relative(npath.fromPortablePath(this.root), npath.fromPortablePath(p))
+          )
+        ),
+        ppath.resolve(
+          snapshotPP,
+          npath.toPortablePath(
+            npath.relative(
+              toNamespacedPath(npath.fromPortablePath(this.root)),
+              toNamespacedPath(npath.fromPortablePath(p))
+            )
+          )
+        ),
+      ])
+    )
+    for (const path of pathsToTry) {
+      const portablePath = npath.toPortablePath(path)
+      if (this.zipFs.existsSync(portablePath)) {
+        return {
+          subPath: portablePath,
+        }
+      }
+    }
+  }
+
+  async copyFilePromise(sourceP: PortablePath, destP: PortablePath, flags: number = 0) {
+    const fallback = async (
+      sourceFs: FakeFS<PortablePath>,
+      sourceP: PortablePath,
+      destFs: FakeFS<PortablePath>,
+      destP: PortablePath
+    ) => {
+      if ((flags & constants.COPYFILE_FICLONE_FORCE) !== 0)
+        throw Object.assign(
+          new Error(`EXDEV: cross-device clone not permitted, copyfile '${sourceP}' -> ${destP}'`),
+          { code: `EXDEV` }
+        )
+      if (flags & constants.COPYFILE_EXCL && (await this.existsPromise(sourceP)))
+        throw Object.assign(
+          new Error(`EEXIST: file already exists, copyfile '${sourceP}' -> '${destP}'`),
+          { code: `EEXIST` }
+        )
+
+      let content
+      try {
+        content = await sourceFs.readFilePromise(sourceP)
+      } catch (error) {
+        throw Object.assign(
+          new Error(`EINVAL: invalid argument, copyfile '${sourceP}' -> '${destP}'`),
+          { code: `EINVAL` }
+        )
+      }
+
+      await destFs.writeFilePromise(destP, content)
+    }
+
+    return await this.makeCallPromise(
+      sourceP,
+      async () => {
+        return await this.baseFs.copyFilePromise(sourceP, destP, flags)
+      },
+      async (zipFsS, { subPath: subPathS }) => {
+        return await fallback(zipFsS, subPathS, this.baseFs, destP)
+      }
+    )
+  }
+
+  copyFileSync(sourceP: PortablePath, destP: PortablePath, flags: number = 0) {
+    const fallback = (
+      sourceFs: FakeFS<PortablePath>,
+      sourceP: PortablePath,
+      destFs: FakeFS<PortablePath>,
+      destP: PortablePath
+    ) => {
+      if ((flags & constants.COPYFILE_FICLONE_FORCE) !== 0)
+        throw Object.assign(
+          new Error(`EXDEV: cross-device clone not permitted, copyfile '${sourceP}' -> ${destP}'`),
+          { code: `EXDEV` }
+        )
+      if (flags & constants.COPYFILE_EXCL && this.existsSync(sourceP))
+        throw Object.assign(
+          new Error(`EEXIST: file already exists, copyfile '${sourceP}' -> '${destP}'`),
+          { code: `EEXIST` }
+        )
+
+      let content
+      try {
+        content = sourceFs.readFileSync(sourceP)
+      } catch (error) {
+        throw Object.assign(
+          new Error(`EINVAL: invalid argument, copyfile '${sourceP}' -> '${destP}'`),
+          { code: `EINVAL` }
+        )
+      }
+
+      destFs.writeFileSync(destP, content)
+    }
+
+    return this.makeCallSync(
+      sourceP,
+      () => {
+        return this.baseFs.copyFileSync(sourceP, destP, flags)
+      },
+      (zipFsS, { subPath: subPathS }) => {
+        return fallback(zipFsS, subPathS, this.baseFs, destP)
+      }
+    )
+  }
+  async readdirPromise(p: PortablePath): Promise<Array<Filename>>
+  async readdirPromise(
+    p: PortablePath,
+    opts: { withFileTypes: false } | null
+  ): Promise<Array<Filename>>
+  async readdirPromise(p: PortablePath, opts: { withFileTypes: true }): Promise<Array<Dirent>>
+  async readdirPromise(
+    p: PortablePath,
+    opts: { withFileTypes: boolean }
+  ): Promise<Array<Filename> | Array<Dirent>>
+  async readdirPromise(
+    p: PortablePath,
+    opts?: { withFileTypes?: boolean } | null
+  ): Promise<Array<string | Dirent>> {
+    const fallback = async () => {
+      return await this.baseFs.readdirPromise(p, opts as any)
+    }
+    return await this.makeCallPromise(
+      p,
+      fallback,
+      async (zipFs, { subPath }) => {
+        const fallbackPaths: Array<string | Dirent> = await fallback().catch(() => [])
+        return Promise.resolve(
+          uniqReaddir(fallbackPaths.concat(await zipFs.readdirPromise(subPath, opts as any)))
+        )
+      },
+      {
+        requireSubpath: false,
+      }
+    )
+  }
+
+  readdirSync(p: PortablePath): Array<Filename>
+  readdirSync(p: PortablePath, opts: { withFileTypes: false } | null): Array<Filename>
+  readdirSync(p: PortablePath, opts: { withFileTypes: true }): Array<Dirent>
+  readdirSync(p: PortablePath, opts: { withFileTypes: boolean }): Array<Filename> | Array<Dirent>
+  readdirSync(p: PortablePath, opts?: { withFileTypes?: boolean } | null): Array<string | Dirent> {
+    const fallback = () => {
+      return this.baseFs.readdirSync(p, opts as any)
+    }
+    return this.makeCallSync(
+      p,
+      fallback,
+      (zipFs, { subPath }) => {
+        let fallbackPaths: Array<string | Dirent> = []
+        try {
+          fallbackPaths = fallback()
+        } catch (e) {}
+        return fallbackPaths.concat(uniqReaddir(zipFs.readdirSync(subPath, opts as any)))
+      },
+      {
+        requireSubpath: false,
+      }
+    )
+  }
+
+  async mkdirPromise(p: PortablePath, opts?: MkdirOptions) {
+    return await this.baseFs.mkdirPromise(p, opts)
+  }
+
+  mkdirSync(p: PortablePath, opts?: MkdirOptions) {
+    return this.baseFs.mkdirSync(p, opts)
+  }
+
+  async rmdirPromise(p: PortablePath, opts?: RmdirOptions) {
+    return await this.baseFs.rmdirPromise(p, opts)
+  }
+
+  rmdirSync(p: PortablePath, opts?: RmdirOptions) {
+    return this.baseFs.rmdirSync(p, opts)
+  }
+
+  async opendirPromise(p: PortablePath, opts?: OpendirOptions) {
+    return this.opendirSync(p, opts)
+  }
+
+  opendirSync(p: PortablePath, opts?: OpendirOptions) {
+    const zipInfo = this.findZip(p)
+    let zipFsDir: Dir<PortablePath> | null = null
+    if (zipInfo) {
+      zipFsDir = this.zipFs.opendirSync(zipInfo.subPath)
+    }
+    let realFsDir: Dir<PortablePath> | null = null
+    try {
+      realFsDir = this.baseFs.opendirSync(p)
+    } catch (e) {
+      if (!zipFsDir) throw e
+    }
+    const seen = new Set()
+    const nextDirent = () => {
+      const entry = realFsDir?.readSync() || zipFsDir?.readSync()
+      if (entry && !seen.has(entry.name)) {
+        seen.add(entry.name)
+        return entry
+      }
+      return null
+    }
+
+    const onClose = () => {
+      zipFsDir?.closeSync()
+      realFsDir?.closeSync()
+    }
+
+    return new CustomDir(p, nextDirent, { onClose })
+  }
+
+  accessPromise = ZipOpenFS.prototype.accessPromise
+  accessSync = ZipOpenFS.prototype.accessSync
+  appendFilePromise = ZipOpenFS.prototype.appendFilePromise
+  appendFileSync = ZipOpenFS.prototype.appendFileSync
+  chmodPromise = ZipOpenFS.prototype.chmodPromise
+  chmodSync = ZipOpenFS.prototype.chmodSync
+  fchmodPromise = ZipOpenFS.prototype.fchmodPromise
+  fchmodSync = ZipOpenFS.prototype.fchmodSync
+  chownPromise = ZipOpenFS.prototype.chownPromise
+  chownSync = ZipOpenFS.prototype.chownSync
+  fchownPromise = ZipOpenFS.prototype.fchownPromise
+  fchownSync = ZipOpenFS.prototype.fchownSync
+  closePromise = ZipOpenFS.prototype.closePromise
+  closeSync = ZipOpenFS.prototype.closeSync
+  createReadStream = ZipOpenFS.prototype.createReadStream
+  createWriteStream = ZipOpenFS.prototype.createWriteStream
+  existsPromise = ZipOpenFS.prototype.existsPromise
+  existsSync = ZipOpenFS.prototype.existsSync
+  fstatPromise = ZipOpenFS.prototype.fstatPromise
+  fstatSync = ZipOpenFS.prototype.fstatSync
+  getExtractHint = ZipOpenFS.prototype.getExtractHint
+  getRealPath = ZipOpenFS.prototype.getRealPath
+  linkPromise = ZipOpenFS.prototype.linkPromise
+  linkSync = ZipOpenFS.prototype.linkSync
+  lstatPromise = ZipOpenFS.prototype.lstatPromise
+  lstatSync = ZipOpenFS.prototype.lstatSync
+  openPromise = ZipOpenFS.prototype.openPromise
+  openSync = ZipOpenFS.prototype.openSync
+  readFilePromise = ZipOpenFS.prototype.readFilePromise
+  readFileSync = ZipOpenFS.prototype.readFileSync
+  readlinkPromise = ZipOpenFS.prototype.readlinkPromise
+  readlinkSync = ZipOpenFS.prototype.readlinkSync
+  readPromise = ZipOpenFS.prototype.readPromise
+  readSync = ZipOpenFS.prototype.readSync
+  renamePromise = ZipOpenFS.prototype.renamePromise
+  renameSync = ZipOpenFS.prototype.renameSync
+  resolve = ZipOpenFS.prototype.resolve
+  statPromise = ZipOpenFS.prototype.statPromise
+  statSync = ZipOpenFS.prototype.statSync
+  symlinkPromise = ZipOpenFS.prototype.symlinkPromise
+  symlinkSync = ZipOpenFS.prototype.symlinkSync
+  truncatePromise = ZipOpenFS.prototype.truncatePromise
+  truncateSync = ZipOpenFS.prototype.truncateSync
+  ftruncatePromise = ZipOpenFS.prototype.ftruncatePromise
+  ftruncateSync = ZipOpenFS.prototype.ftruncateSync
+  unlinkPromise = ZipOpenFS.prototype.unlinkPromise
+  unlinkSync = ZipOpenFS.prototype.unlinkSync
+  unwatchFile = ZipOpenFS.prototype.unwatchFile
+  utimesPromise = ZipOpenFS.prototype.utimesPromise
+  utimesSync = ZipOpenFS.prototype.utimesSync
+  lutimesPromise = ZipOpenFS.prototype.utimesPromise
+  lutimesSync = ZipOpenFS.prototype.utimesSync
+  watch = ZipOpenFS.prototype.watch
+  watchFile = ZipOpenFS.prototype.watchFile
+  writeFilePromise = ZipOpenFS.prototype.writeFilePromise
+  writeFileSync = ZipOpenFS.prototype.writeFileSync
+  writePromise = ZipOpenFS.prototype.writePromise
+  writeSync = ZipOpenFS.prototype.writeSync
+
+  // @ts-ignore
+  remapFd = ZipOpenFS.prototype.remapFd
+}

src/fs/bundle.ts

@@ -1,16 +1,10 @@
-import { stat as getStat, Stats, createReadStream } from 'fs'
 import { relative } from 'path'
 import { Readable } from 'stream'
-import MultiStream = require('multistream')
+import { File } from 'resolve-dependencies'
+import archiver from 'archiver'
 
-const stat = (file: string): Promise<Stats> => {
+function makeRelativeToZip(cwd: string, path: string) {
-  return new Promise((resolve, reject) => {
+  return '/snapshot/' + relative(cwd, path)
-    getStat(file, (err, stats) => (err ? reject(err) : resolve(stats)))
-  })
-}
-
-function makeRelative(cwd: string, path: string) {
-  return './' + relative(cwd, path)
 }
 
 export function toStream(content: Buffer | string) {
@@ -18,56 +12,40 @@ export function toStream(content: Buffer | string) {
     read() {
       this.push(content)
       this.push(null)
-    }
+    },
   })
   return readable
 }
-
-export type File = { absPath: string; contents: string; deps: FileMap }
-export type FileMap = { [absPath: string]: File | null }
-
-export interface BundleOptions {
-  entries: string[]
-  cwd: string
-  expand: boolean
-  loadContent: boolean
-  files: FileMap
-}
-
 export class Bundle {
+  cwd: string
+  files = new Set<string>()
+  zip: any
   constructor({ cwd }: { cwd: string } = { cwd: process.cwd() }) {
     this.cwd = cwd
+    this.zip = archiver('zip')
   }
-  cwd: string
-  blobSize: number = 0
-  index: { [relativeFilePath: string]: [number, number] } = {}
-  streams: (Readable | (() => Readable))[] = []
 
-  async addResource(absoluteFileName: string, content?: Buffer | string) {
+  get list() {
-    let length = 0
+    return Array.from(this.files)
-    if (content !== undefined) {
+  }
-      length = Buffer.byteLength(content)
+
+  public addResource(absoluteFileName: string, content?: File | Buffer | string) {
+    const destPath = makeRelativeToZip(this.cwd, absoluteFileName)
+    if (!this.files.has(destPath)) {
+      if (content == null) {
+        this.zip.file(absoluteFileName, { name: destPath })
       } else {
-      const stats = await stat(absoluteFileName)
+        this.zip.append(content, { name: destPath })
-      length = stats.size
+      }
+      this.files.add(destPath)
+    }
   }
 
-    const start = this.blobSize
+  public finalize() {
-
+    return this.zip.finalize()
-    this.blobSize += length
-    this.index[makeRelative(this.cwd, absoluteFileName)] = [start, length]
-    this.streams.push(() => (content ? toStream(content) : createReadStream(absoluteFileName)))
   }
 
-  concat() {
+  public toStream(): Readable {
-    throw new Error('Not Implemented')
+    return this.zip
-  }
-
-  toStream() {
-    return new (MultiStream as any)(this.streams)
-  }
-
-  toJSON() {
-    return this.index
   }
 }

src/fs/patch.ts

@@ -1,389 +1,108 @@
-import { Stats } from 'fs'
+import { ZipFS, getLibzipSync } from '@yarnpkg/libzip'
+import { patchFs, npath, PosixFS, NodeFS } from '@yarnpkg/fslib'
+import { SnapshotZipFS } from './SnapshotZipFS'
+import * as assert from 'assert'
+import * as constants from 'constants'
+import { dirname } from 'path'
 
-export interface NexeBinary {
+export interface NexeHeader {
   blobPath: string
-  resources: { [key: string]: number[] }
   layout: {
-    stat: Stats
     resourceStart: number
-    contentSize?: number
+    resourceSize: number
-    contentStart?: number
+    contentSize: number
-    resourceSize?: number
+    contentStart: number
   }
 }
 
 let originalFsMethods: any = null
 let lazyRestoreFs = () => {}
+const patches = (process as any).nexe.patches || {}
+const originalPatches = { ...patches }
+delete (process as any).nexe
 
-function shimFs(binary: NexeBinary, fs: any = require('fs')) {
+function shimFs(binary: NexeHeader, fs: typeof import('fs') = require('fs')) {
   if (originalFsMethods !== null) {
     return
   }
+
   originalFsMethods = Object.assign({}, fs)
-  const { blobPath, resources: manifest } = binary,
+
-    { resourceStart, stat } = binary.layout,
+  const realFs: typeof fs = { ...fs }
-    directories: { [key: string]: { [key: string]: boolean } } = {},
+  const nodeFs = new NodeFS(realFs)
-    notAFile = '!@#$%^&*',
+
-    isWin = process.platform.startsWith('win'),
+  const blob = Buffer.allocUnsafe(binary.layout.resourceSize)
-    isString = (x: any): x is string => typeof x === 'string' || x instanceof String,
+  const blobFd = realFs.openSync(binary.blobPath, 'r')
-    noop = () => {},
+  const bytesRead = realFs.readSync(
-    path = require('path'),
+    blobFd,
-    baseDir = path.dirname(process.execPath)
+    blob,
+    0,
+    binary.layout.resourceSize,
+    binary.layout.resourceStart
+  )
+  assert.equal(bytesRead, binary.layout.resourceSize)
+
+  const zipFs = new ZipFS(blob, { readOnly: true })
+  const snapshotZipFS = new SnapshotZipFS({
+    libzip: getLibzipSync(),
+    zipFs,
+    baseFs: nodeFs,
+    root: dirname(process.argv[0]),
+  })
+  const posixSnapshotZipFs = new PosixFS(snapshotZipFS)
+  patchFs(fs, posixSnapshotZipFs)
 
   let log = (_: string) => true
   if ((process.env.DEBUG || '').toLowerCase().includes('nexe:require')) {
-    log = (text: string) => process.stderr.write('[nexe] - ' + text + '\n')
+    process.stderr.write(
-  }
+      // @ts-ignore
-
+      `[nexe] - FILES ${JSON.stringify(Array.from(zipFs.entries.keys()), null, 4)}\n`
-  const winPath = (key: string) => {
-    if (isWin && key.substr(1, 2) === ':\\') {
-      key = key[0].toUpperCase() + key.substr(1)
-    }
-    return key
-  }
-
-  const getKey = function getKey(filepath: string | Buffer | null): string {
-    if (Buffer.isBuffer(filepath)) {
-      filepath = filepath.toString()
-    }
-    if (!isString(filepath)) {
-      return notAFile
-    }
-    let key = path.resolve(baseDir, filepath)
-
-    return winPath(key)
-  }
-
-  const statTime = function() {
-    return {
-      dev: 0,
-      ino: 0,
-      nlink: 0,
-      rdev: 0,
-      uid: 123,
-      gid: 500,
-      blksize: 4096,
-      blocks: 0,
-      atime: new Date(stat.atime),
-      atimeMs: stat.atime.getTime(),
-      mtime: new Date(stat.mtime),
-      mtimeMs: stat.mtime.getTime(),
-      ctime: new Date(stat.ctime),
-      ctimMs: stat.ctime.getTime(),
-      birthtime: new Date(stat.birthtime),
-      birthtimeMs: stat.birthtime.getTime()
-    }
-  }
-
-  let BigInt: Function
-  try {
-    BigInt = eval('BigInt')
-  } catch (ignored) {}
-
-  const createStat = function(extensions: any, options: any) {
-    const stat = Object.assign(new fs.Stats(), binary.layout.stat, statTime(), extensions)
-    if (options && options.bigint && BigInt) {
-      for (const k in stat) {
-        if (Object.prototype.hasOwnProperty.call(stat, k) && typeof stat[k] === 'number') {
-          stat[k] = BigInt(stat[k])
-        }
-      }
-    }
-    return stat
-  }
-
-  const ownStat = function(filepath: any, options: any) {
-    setupManifest()
-    const key = getKey(filepath)
-    if (directories[key]) {
-      let mode = binary.layout.stat.mode
-      mode |= fs.constants.S_IFDIR
-      mode &= ~fs.constants.S_IFREG
-      return createStat({ mode, size: 0 }, options)
-    }
-    if (manifest[key]) {
-      return createStat({ size: manifest[key][1] }, options)
-    }
-  }
-
-  function makeLong(filepath: string) {
-    return (path as any)._makeLong && (path as any)._makeLong(filepath)
-  }
-
-  function fileOpts(options: any) {
-    return !options ? {} : isString(options) ? { encoding: options } : options
-  }
-
-  let setupManifest = () => {
-    Object.keys(manifest).forEach(filepath => {
-      const entry = manifest[filepath]
-      const absolutePath = getKey(filepath)
-      const longPath = makeLong(absolutePath)
-      const normalizedPath = winPath(path.normalize(filepath))
-
-      if (!manifest[absolutePath]) {
-        manifest[absolutePath] = entry
-      }
-      if (longPath && !manifest[longPath]) {
-        manifest[longPath] = entry
-      }
-      if (!manifest[normalizedPath]) {
-        manifest[normalizedPath] = manifest[filepath]
-      }
-
-      let currentDir = path.dirname(absolutePath)
-      let prevDir = absolutePath
-
-      while (currentDir !== prevDir) {
-        directories[currentDir] = directories[currentDir] || {}
-        directories[currentDir][path.basename(prevDir)] = true
-        const longDir = makeLong(currentDir)
-        if (longDir && !directories[longDir]) {
-          directories[longDir] = directories[currentDir]
-        }
-        prevDir = currentDir
-        currentDir = path.dirname(currentDir)
-      }
-    })
-    ;(manifest[notAFile] as any) = false
-    ;(directories[notAFile] as any) = false
-    setupManifest = noop
-  }
-
-  //naive patches intended to work for most use cases
-  const nfs: any = {
-    existsSync: function existsSync(filepath: string) {
-      setupManifest()
-      const key = getKey(filepath)
-      if (manifest[key] || directories[key]) {
-        return true
-      }
-      return originalFsMethods.existsSync.apply(fs, arguments)
-    },
-    realpath: function realpath(filepath: any, options: any, cb: any): void {
-      setupManifest()
-      const key = getKey(filepath)
-      if (isString(filepath) && (manifest[filepath] || manifest[key])) {
-        return process.nextTick(() => cb(null, filepath))
-      }
-      return originalFsMethods.realpath.call(fs, filepath, options, cb)
-    },
-    realpathSync: function realpathSync(filepath: any, options: any) {
-      setupManifest()
-      const key = getKey(filepath)
-      if (manifest[key]) {
-        return filepath
-      }
-      return originalFsMethods.realpathSync.call(fs, filepath, options)
-    },
-    readdir: function readdir(filepath: string | Buffer, options: any, callback: any) {
-      setupManifest()
-      const dir = directories[getKey(filepath)]
-      if (dir) {
-        if ('function' === typeof options) {
-          callback = options
-          options = { encoding: 'utf8' }
-        }
-        process.nextTick(() => callback(null, Object.keys(dir)))
-      } else {
-        return originalFsMethods.readdir.apply(fs, arguments)
-      }
-    },
-    readdirSync: function readdirSync(filepath: string | Buffer, options: any) {
-      setupManifest()
-      const dir = directories[getKey(filepath)]
-      if (dir) {
-        return Object.keys(dir)
-      }
-      return originalFsMethods.readdirSync.apply(fs, arguments)
-    },
-
-    readFile: function readFile(filepath: any, options: any, callback: any) {
-      setupManifest()
-      const entry = manifest[getKey(filepath)]
-      if (!entry) {
-        return originalFsMethods.readFile.apply(fs, arguments)
-      }
-      const [offset, length] = entry
-      const resourceOffset = resourceStart + offset
-      const encoding = fileOpts(options).encoding
-      callback = typeof options === 'function' ? options : callback
-
-      originalFsMethods.open(blobPath, 'r', function(err: Error, fd: number) {
-        if (err) return callback(err, null)
-        originalFsMethods.read(fd, Buffer.alloc(length), 0, length, resourceOffset, function(
-          error: Error,
-          bytesRead: number,
-          result: Buffer
-        ) {
-          if (error) {
-            return originalFsMethods.close(fd, function() {
-              callback(error, null)
-            })
-          }
-          originalFsMethods.close(fd, function(err: Error) {
-            if (err) {
-              return callback(err, result)
-            }
-            callback(err, encoding ? result.toString(encoding) : result)
-          })
-        })
-      })
-    },
-    createReadStream: function createReadStream(filepath: any, options: any) {
-      setupManifest()
-      const entry = manifest[getKey(filepath)]
-      if (!entry) {
-        return originalFsMethods.createReadStream.apply(fs, arguments)
-      }
-      const [offset, length] = entry
-      const resourceOffset = resourceStart + offset
-      const opts = fileOpts(options)
-
-      return originalFsMethods.createReadStream(
-        blobPath,
-        Object.assign({}, opts, {
-          start: resourceOffset,
-          end: resourceOffset + length - 1
-        })
     )
-    },
+    process.stderr.write(
-    readFileSync: function readFileSync(filepath: any, options: any) {
+      // @ts-ignore
-      setupManifest()
+      `[nexe] - DIRECTORIES ${JSON.stringify(Array.from(zipFs.listings.keys()), null, 4)}\n`
-      const entry = manifest[getKey(filepath)]
+    )
-      if (!entry) {
+    log = (text: string) => {
-        return originalFsMethods.readFileSync.apply(fs, arguments)
+      return process.stderr.write(`[nexe] - ${text}\n`)
-      }
-      const [offset, length] = entry
-      const resourceOffset = resourceStart + offset
-      const encoding = fileOpts(options).encoding
-      const fd = originalFsMethods.openSync(process.execPath, 'r')
-      const result = Buffer.alloc(length)
-      originalFsMethods.readSync(fd, result, 0, length, resourceOffset)
-      originalFsMethods.closeSync(fd)
-      return encoding ? result.toString(encoding) : result
-    },
-    statSync: function statSync(filepath: string | Buffer, options: any) {
-      const stat = ownStat(filepath, options)
-      if (stat) {
-        return stat
-      }
-      return originalFsMethods.statSync.apply(fs, arguments)
-    },
-    stat: function stat(filepath: string | Buffer, options: any, callback: any) {
-      let stat: any
-      if (typeof options === 'function') {
-        callback = options
-        stat = ownStat(filepath, null)
-      } else {
-        stat = ownStat(filepath, options)
-      }
-      if (stat) {
-        process.nextTick(() => {
-          callback(null, stat)
-        })
-      } else {
-        return originalFsMethods.stat.apply(fs, arguments)
     }
   }
-  }
+  function internalModuleReadFile(this: any, original: any, ...args: any[]) {
-
+    log(`internalModuleReadFile ${args[0]}`)
-  if (typeof fs.exists === 'function') {
+    try {
-    nfs.exists = function(filepath: string, cb: Function) {
+      return posixSnapshotZipFs.readFileSync(args[0], 'utf-8')
-      cb = cb || noop
+    } catch (e) {
-      const exists = nfs.existsSync(filepath)
+      return ''
-      process.nextTick(() => cb(exists))
     }
   }
-
+  if (patches.internalModuleReadFile) {
-  const patches = (process as any).nexe.patches || {}
+    patches.internalModuleReadFile = internalModuleReadFile
-  delete (process as any).nexe
-  patches.internalModuleReadFile = function(this: any, original: any, ...args: any[]) {
-    const [filepath] = args
-    setupManifest()
-    if (manifest[filepath]) {
-      log('read     (hit)              ' + filepath)
-      return nfs.readFileSync(filepath, 'utf-8')
   }
-    log('read          (miss)       ' + filepath)
+  let returningArray: boolean
-    return original.call(this, ...args)
+  patches.internalModuleReadJSON = function (this: any, original: any, ...args: any[]) {
+    if (returningArray == null) returningArray = Array.isArray(original.call(this, ''))
+    const res = internalModuleReadFile.call(this, original, ...args)
+    return returningArray && !Array.isArray(res)
+      ? res === ''
+        ? []
+        : [res, /"(main|name|type|exports|imports)"/.test(res)]
+      : res
   }
-  patches.internalModuleReadJSON = patches.internalModuleReadFile
+  patches.internalModuleStat = function (this: any, original: any, ...args: any[]) {
-  patches.internalModuleStat = function(this: any, original: any, ...args: any[]) {
+    log(`internalModuleStat ${args[0]}`)
-    setupManifest()
+    try {
-    const [filepath] = args
+      const stat = posixSnapshotZipFs.statSync(args[0])
-    if (manifest[filepath]) {
+      if (stat.isDirectory()) return 1
-      log('stat     (hit)              ' + filepath + '   ' + 0)
       return 0
-    }
+    } catch (e) {
-    if (directories[filepath]) {
+      return -constants.ENOENT
-      log('stat dir (hit)              ' + filepath + '   ' + 1)
-      return 1
-    }
-    const res = original.call(this, ...args)
-    if (res === 0) {
-      log('stat          (miss)        ' + filepath + '   ' + res)
-    } else if (res === 1) {
-      log('stat dir      (miss)        ' + filepath + '   ' + res)
-    } else {
-      log('stat                 (fail) ' + filepath + '   ' + res)
-    }
-    return res
-  }
-
-  if (typeof fs.exists === 'function') {
-    nfs.exists = function(filepath: string, cb: Function) {
-      cb = cb || noop
-      const exists = nfs.existsSync(filepath)
-      if (!exists) {
-        return originalFsMethods.exists(filepath, cb)
-      }
-      process.nextTick(() => cb(exists))
     }
   }
 
-  if (typeof fs.copyFile === 'function') {
-    nfs.copyFile = function(filepath: string, dest: string, flags: number, callback: Function) {
-      setupManifest()
-      const entry = manifest[getKey(filepath)]
-      if (!entry) {
-        return originalFsMethods.copyFile.apply(fs, arguments)
-      }
-      if (typeof flags === 'function') {
-        callback = flags
-        flags = 0
-      }
-      nfs.readFile(filepath, (err: any, buffer: any) => {
-        if (err) {
-          return callback(err)
-        }
-        originalFsMethods.writeFile(dest, buffer, (err: any) => {
-          if (err) {
-            return callback(err)
-          }
-          callback(null)
-        })
-      })
-    }
-    nfs.copyFileSync = function(filepath: string, dest: string) {
-      setupManifest()
-      const entry = manifest[getKey(filepath)]
-      if (!entry) {
-        return originalFsMethods.copyFileSync.apply(fs, arguments)
-      }
-      return originalFsMethods.writeFileSync(dest, nfs.readFileSync(filepath))
-    }
-  }
-
-  Object.assign(fs, nfs)
-
   lazyRestoreFs = () => {
-    Object.keys(nfs).forEach(key => {
+    Object.assign(fs, originalFsMethods)
-      fs[key] = originalFsMethods[key]
+    Object.assign(patches, originalPatches)
-    })
     lazyRestoreFs = () => {}
   }
-  return true
 }
 
 function restoreFs() {

src/logger.ts

@@ -24,7 +24,7 @@ export class Logger {
       this.ora = ora({
         text: 'Starting...',
         color: 'blue',
-        spinner: 'dots'
+        spinner: 'dots',
       })
       this.ora.stop()
     }
@@ -35,7 +35,7 @@ export class Logger {
 
   flush() {
     !this.silent && this.ora.succeed()
-    return new Promise(resolve => setTimeout(resolve, frameLength))
+    return new Promise((resolve) => setTimeout(resolve, frameLength))
   }
 
   _write(update: string, color = 'green') {
@@ -66,7 +66,7 @@ export class Logger {
       modify: this.modify,
       log: this.verbose ? this.write : this.modify,
       pause: () => this.ora.stopAndPersist(),
-      resume: () => this.ora.start()
+      resume: () => this.ora.start(),
     } as LogStep
   }
 }

src/nexe.ts

@@ -15,7 +15,7 @@ async function compile(
   compilerOptions?: Partial<NexeOptions>,
   callback?: (err: Error | null) => void
 ) {
-  let error = null,
+  let error: Error | null = null,
     options: NexeOptions | null = null,
     compiler: NexeCompiler | null = null
 
@@ -32,7 +32,7 @@ async function compile(
       options.build ? [artifacts, ...patches, ...(options.patches as NexePatch[])] : [],
       options.plugins as NexePatch[]
     )(compiler)
-  } catch (e) {
+  } catch (e: any) {
     error = e
   }
 

src/options.ts

@@ -1,4 +1,4 @@
-import * as parseArgv from 'minimist'
+import parseArgv from 'minimist'
 import { NexeCompiler, NexeError } from './compiler'
 import { isWindows, STDIN_FLAG } from './util'
 import { basename, extname, join, isAbsolute, resolve } from 'path'
@@ -9,7 +9,7 @@ import { resolveSync } from 'resolve-dependencies'
 const caw = require('caw')
 const c = process.platform === 'win32' ? chalk.constructor({ enabled: false }) : chalk
 
-export const version = '{{replace:0}}'
+export const version = '{{ version }}'
 
 export interface NexePatch {
   (compiler: NexeCompiler, next: () => Promise<void>): Promise<void>
@@ -21,6 +21,7 @@ export interface NexeOptions {
   output: string
   targets: (string | NexeTarget)[]
   name: string
+  remote: string
   asset: string
   cwd: string
   fs: boolean | string[]
@@ -70,17 +71,18 @@ const defaults = {
   build: false,
   bundle: true,
   patches: [],
-  plugins: []
+  plugins: [],
+  remote: 'https://github.com/nexe/nexe/releases/download/v3.3.3/',
 }
 const alias = {
   i: 'input',
   o: 'output',
   v: 'version',
+  a: 'asset',
   t: 'target',
   b: 'build',
   n: 'name',
   r: 'resource',
-  a: 'asset',
   p: 'python',
   f: 'flag',
   c: 'configure',
@@ -88,7 +90,7 @@ const alias = {
   h: 'help',
   l: 'loglevel',
   'fake-argv': 'fakeArgv',
-  'gh-token': 'ghToken'
+  'gh-token': 'ghToken',
 }
 const argv = parseArgv(process.argv, { alias, default: { ...defaults } })
 let help = `
@@ -101,18 +103,18 @@ ${c.bold('nexe <entry-file> [options]')}
   -t   --target                     -- node version description
   -n   --name                       -- main app module name
   -r   --resource                   -- *embed files (glob) within the binary
-  -a   --asset                      -- alternate asset path, file or url pointing to a base (nexe) binary
+       --remote                     -- alternate location (URL) to download pre-built base (nexe) binaries from
        --plugin                     -- extend nexe runtime behavior
 
    ${c.underline.bold('Building from source:')}
 
   -b   --build                      -- build from source
-  -p   --python                     -- python2 (as python) executable path
+  -p   --python                     -- python3 (as python) executable path
   -f   --flag                       -- *v8 flags to include during compilation
   -c   --configure                  -- *arguments to the configure step
   -m   --make                       -- *arguments to the make/build step
        --patch                      -- module with middleware default export for adding a build patch
-       --no-mangle                  -- used when generating base binaries, or when patching _third_party_main manually.
+       --no-mangle                  -- used when generating base binaries, or when patching _third_party_main manually
        --snapshot                   -- path to a warmup snapshot
        --ico                        -- file name for alternate icon file (windows)
        --rc-*                       -- populate rc file options (windows)
@@ -133,7 +135,7 @@ ${c.bold('nexe <entry-file> [options]')}
 help = EOL + help + EOL
 
 function flatten(...args: any[]): string[] {
-  return ([] as string[]).concat(...args).filter(x => x)
+  return ([] as string[]).concat(...args).filter((x) => x)
 }
 
 /**
@@ -144,16 +146,13 @@ function flatten(...args: any[]): string[] {
  */
 function extractCliMap(match: RegExp, options: any) {
   return Object.keys(options)
-    .filter(x => match.test(x))
+    .filter((x) => match.test(x))
-    .reduce(
+    .reduce((map: any, option: any) => {
-      (map: any, option: any) => {
       const key = option.split('-')[1]
       map[key] = options[option]
       delete options[option]
       return map
-      },
+    }, {} as any)
-      {} as any
-    )
 }
 
 function extractLogLevel(options: NexeOptions) {
@@ -252,13 +251,19 @@ function normalizeOptions(input?: Partial<NexeOptions>): NexeOptions {
   options.configure = flatten(options.configure)
   options.resources = flatten(opts.resource, options.resources)
 
+  if (!options.remote.endsWith('/')) {
+    options.remote += '/'
+  }
+
   options.downloadOptions = options.downloadOptions || {}
   options.downloadOptions.headers = options.downloadOptions.headers || {}
   options.downloadOptions.headers['User-Agent'] = 'nexe (https://www.npmjs.com/package/nexe)'
   options.downloadOptions.agent = process.env.HTTPS_PROXY
     ? caw(process.env.HTTPS_PROXY, { protocol: 'https' })
     : options.downloadOptions.agent || require('https').globalAgent
-  options.downloadOptions.rejectUnauthorized = process.env.HTTPS_PROXY ? false : true
+  options.downloadOptions.rejectUnauthorized = process.env.NODE_TLS_REJECT_UNAUTHORIZED
+    ? false
+    : true
 
   options.rc = options.rc || extractCliMap(/^rc-.*/, options)
   options.output =
@@ -292,8 +297,8 @@ function normalizeOptions(input?: Partial<NexeOptions>): NexeOptions {
   }
 
   Object.keys(alias)
-    .filter(k => k !== 'rc')
+    .filter((k) => k !== 'rc')
-    .forEach(x => delete opts[x])
+    .forEach((x) => delete opts[x])
 
   return options
 }

src/patches/boot-nexe.ts

@@ -20,13 +20,13 @@ const footer = tailWindow.slice(footerPosition, footerPosition + 32),
 Object.defineProperty(
   process,
   '__nexe',
-  (function() {
+  (function () {
     let nexeHeader: any = null
     return {
-      get: function() {
+      get: function () {
         return nexeHeader
       },
-      set: function(value: any) {
+      set: function (value: any) {
         if (nexeHeader) {
           throw new Error('This property is readonly')
         }
@@ -37,13 +37,13 @@ Object.defineProperty(
             contentSize,
             contentStart,
             resourceSize,
-            resourceStart
+            resourceStart,
-          }
+          },
         })
         Object.freeze(nexeHeader)
       },
       enumerable: false,
-      configurable: false
+      configurable: false,
     }
   })()
 )

src/patches/disable-node-cli.ts

@@ -7,7 +7,11 @@ export default async function disableNodeCli(compiler: NexeCompiler, next: () =>
   }
 
   if (semverGt(compiler.target.version, '11.6.0')) {
-    await compiler.replaceInFileAsync('src/node.cc', /(?<!int )ProcessGlobalArgs\(argv/g, '0;//$&')
+    await compiler.replaceInFileAsync(
+      'src/node.cc',
+      /(?<!int )ProcessGlobalArgs\(argv[^;]*;/gm,
+      '0;/*$&*/'
+    )
   } else if (semverGt(compiler.target.version, '10.9')) {
     await compiler.replaceInFileAsync('src/node.cc', /(?<!void )ProcessArgv\(argv/g, '//$&')
   } else if (semverGt(compiler.target.version, '9.999')) {
@@ -17,7 +21,7 @@ export default async function disableNodeCli(compiler: NexeCompiler, next: () =>
       'int i = v8_argc; i < v8_argc; i++'
     )
     let matches = 0
-    await compiler.replaceInFileAsync('src/node.cc', /v8_argc > 1/g, match => {
+    await compiler.replaceInFileAsync('src/node.cc', /v8_argc > 1/g, (match) => {
       if (matches++) {
         return 'false'
       }

src/patches/gyp.ts

@@ -13,8 +13,8 @@ export default async function nodeGyp(
     `
     ${nodeGypMarker}
     ${files
-      .filter(x => x.filename.startsWith('lib'))
+      .filter((x) => x.filename.startsWith('lib'))
-      .map(x => `'${x.filename}'`)
+      .map((x) => `'${x.filename}'`)
       .toString()},
   `.trim()
   )

src/patches/node-rc.ts

@@ -8,18 +8,19 @@ export default async function nodeRc(compiler: NexeCompiler, next: () => Promise
 
   const file = await compiler.readFileAsync('src/res/node.rc')
 
-  Object.keys(options).forEach(key => {
+  Object.keys(options).forEach((key) => {
     let value = options[key]
     const isVar = /^[A-Z_]+$/.test(value)
     value = isVar ? value : `"${value}"`
-    file.contents = file.contents.replace(
+    file.contents = file.contents
-      new RegExp(`VALUE "${key}",.*`),
+      .toString()
-      `VALUE "${key}", ${value}`
+      .replace(new RegExp(`VALUE "${key}",.*`), `VALUE "${key}", ${value}`)
-    )
   })
-  ;['PRODUCTVERSION', 'FILEVERSION'].forEach(x => {
+  ;['PRODUCTVERSION', 'FILEVERSION'].forEach((x) => {
     if (options[x]) {
-      file.contents = file.contents.replace(new RegExp(x + ' .*$', 'm'), `${x} ${options[x]}`)
+      file.contents = file.contents
+        .toString()
+        .replace(new RegExp(x + ' .*$', 'm'), `${x} ${options[x]}`)
     }
   })
 

src/patches/snapshot.ts

@@ -2,7 +2,7 @@ import { resolve } from 'path'
 import { NexeCompiler } from '../compiler'
 import { semverGt } from '../util'
 
-export default async function(compiler: NexeCompiler, next: () => Promise<void>) {
+export default async function (compiler: NexeCompiler, next: () => Promise<void>) {
   const { snapshot, warmup, cwd } = compiler.options
 
   if (!snapshot) {

src/patches/third-party-main.ts

@@ -1,5 +1,5 @@
 import { NexeCompiler } from '../compiler'
-import { parse } from 'cherow'
+import { parse } from 'meriyah'
 import { wrap, semverGt } from '../util'
 
 function walkSome(node: any, visit: Function) {
@@ -29,6 +29,8 @@ export default async function main(compiler: NexeCompiler, next: () => Promise<v
 
   if (version.startsWith('4.')) {
     bootFile = 'src/node.js'
+  } else if (semverGt(version, '18.11.99')) {
+    bootFile = 'lib/internal/process/pre_execution.js'
   } else if (semverGt(version, '11.99')) {
     bootFile = 'lib/internal/bootstrap/pre_execution.js'
   } else if (semverGt(version, '9.10.1')) {
@@ -36,13 +38,11 @@ export default async function main(compiler: NexeCompiler, next: () => Promise<v
   }
 
   const file = await compiler.readFileAsync(bootFile),
-    ast = parse(file.contents, {
+    ast = parse(file.contents.toString(), {
-      loc: true,
-      tolerant: true,
       next: true,
       globalReturn: true,
-      node: true,
+      loc: true,
-      skipShebang: true
+      specDeviation: true,
     }),
     location = { start: { line: 0 } }
 
@@ -54,32 +54,64 @@ export default async function main(compiler: NexeCompiler, next: () => Promise<v
     }
   })
 
-  const fileLines = file.contents.split('\n')
+  const fileLines = file.contents.toString().split('\n')
+  if (semverGt(version, '19.99')) {
+    await compiler.replaceInFileAsync(
+      'lib/internal/modules/cjs/loader.js',
+      "'use strict';",
+      "'use strict';\n" + '{{ file("lib/fs/bootstrap.js") }}' + '\n'
+    )
+    fileLines.splice(location.start.line, 0, 'expandArgv1 = false;')
+  } else {
     fileLines.splice(
       location.start.line,
       0,
-    '{{replace:lib/fs/bootstrap.js}}' +
+      '{{ file("lib/fs/bootstrap.js") }}' +
         '\n' +
         (semverGt(version, '11.99') ? 'expandArgv1 = false;\n' : '')
     )
+  }
   file.contents = fileLines.join('\n')
 
   if (semverGt(version, '11.99')) {
+    if (semverGt(version, '12.17.99')) {
+      await compiler.replaceInFileAsync(
+        bootFile,
+        'initializeFrozenIntrinsics();',
+        'initializeFrozenIntrinsics();\n' + wrap('{{ file("lib/patches/boot-nexe.js") }}')
+      )
+    } else {
       await compiler.replaceInFileAsync(
         bootFile,
         'initializePolicy();',
-      'initializePolicy();\n' + wrap('{{replace:lib/patches/boot-nexe.js}}')
+        'initializePolicy();\n' + wrap('{{ file("lib/patches/boot-nexe.js") }}')
       )
+    }
+    await compiler.replaceInFileAsync(
+      bootFile,
+      'assert(!CJSLoader.hasLoadedAnyUserCJSModule)',
+      '/*assert(!CJSLoader.hasLoadedAnyUserCJSModule)*/'
+    )
+    const { contents: nodeccContents } = await compiler.readFileAsync('src/node.cc')
+    if (nodeccContents.includes('if (env->worker_context() != nullptr) {')) {
+      await compiler.replaceInFileAsync(
+        'src/node.cc',
+        'if (env->worker_context() != nullptr) {',
+        'if (env->worker_context() == nullptr) {\n' +
+          '  return StartExecution(env, "internal/main/run_main_module"); } else {\n'
+      )
+    } else {
       await compiler.replaceInFileAsync(
         'src/node.cc',
         'MaybeLocal<Value> StartMainThreadExecution(Environment* env) {',
         'MaybeLocal<Value> StartMainThreadExecution(Environment* env) {\n' +
           '  return StartExecution(env, "internal/main/run_main_module");\n'
       )
+    }
   } else {
     await compiler.setFileContentsAsync(
       'lib/_third_party_main.js',
-      '{{replace:lib/patches/boot-nexe.js}}'
+      '{{ file("lib/patches/boot-nexe.js") }}'
     )
   }
   return next()

src/releases.ts

@@ -2,7 +2,7 @@ import got = require('got')
 import { platforms, architectures, NexeTarget, getTarget, targetsEqual } from './target'
 export { NexeTarget }
 
-const versionsToSkip = [0, 1, 2, 3, 4, 5, 7, 9, 11, 13, 15, 17, 19, 21, 22]
+const versionsToSkip = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 17, 19, 21, 22]
 export interface GitAsset {
   name: string
   url: string
@@ -28,9 +28,6 @@ function isBuildableVersion(version: string) {
   if (version === '12.11.0') {
     return false
   }
-  if (version === '4.9.1') {
-    return true
-  }
   return !versionsToSkip.includes(Number(version.split('.')[0]))
 }
 
@@ -42,7 +39,7 @@ export async function getUnBuiltReleases(options?: any) {
   const nodeReleases = await getJson<NodeRelease[]>(
     'https://nodejs.org/download/release/index.json'
   )
-  const existingVersions = (await getLatestGitRelease(options)).assets.map(x => getTarget(x.name))
+  const existingVersions = (await getLatestGitRelease(options)).assets.map((x) => getTarget(x.name))
 
   const versionMap: { [key: string]: true } = {}
   return nodeReleases
@@ -52,8 +49,8 @@ export async function getUnBuiltReleases(options?: any) {
         return versions
       }
       versionMap[version] = true
-      platforms.forEach(platform => {
+      platforms.forEach((platform) => {
-        architectures.forEach(arch => {
+        architectures.forEach((arch) => {
           if (arch === 'x86' && platform === 'mac') return
           if (arch.includes('arm')) return
           versions.push(getTarget({ platform, arch, version }))
@@ -61,5 +58,5 @@ export async function getUnBuiltReleases(options?: any) {
       })
       return versions
     }, [])
-    .filter(x => !existingVersions.some(t => targetsEqual(t, x)))
+    .filter((x) => !existingVersions.some((t) => targetsEqual(t, x)))
 }

src/steps/artifacts.ts

@@ -1,29 +1,28 @@
 import { join, dirname } from 'path'
-import { readdir, unlink } from 'fs'
+import * as fs from 'fs'
+import { promisify } from 'util'
 import { readFileAsync, writeFileAsync, isDirectoryAsync } from '../util'
-import * as mkdirp from 'mkdirp'
+import mkdirpAsync = require('mkdirp')
 import { NexeCompiler } from '../compiler'
-import pify = require('pify')
 
-const mkdirpAsync = pify(mkdirp)
+const unlinkAsync = promisify(fs.unlink),
-const unlinkAsync = pify(unlink)
+  readdirAsync = promisify(fs.readdir)
-const readdirAsync = pify(readdir)
 
 function readDirAsync(dir: string): Promise<string[]> {
-  return readdirAsync(dir).then(paths => {
+  return readdirAsync(dir).then((paths) => {
     return Promise.all(
       paths.map((file: string) => {
         const path = join(dir, file)
-        return isDirectoryAsync(path).then(x => (x ? readDirAsync(path) : (path as any)))
+        return isDirectoryAsync(path).then((x) => (x ? readDirAsync(path) : (path as any)))
       })
-    ).then(result => {
+    ).then((result) => {
       return [].concat(...(result as any))
     })
   })
 }
 
 function maybeReadFileContentsAsync(file: string) {
-  return readFileAsync(file, 'utf-8').catch(e => {
+  return readFileAsync(file, 'utf-8').catch((e) => {
     if (e.code === 'ENOENT') {
       return ''
     }
@@ -47,16 +46,16 @@ export default async function artifacts(compiler: NexeCompiler, next: () => Prom
   const tmpFiles = await readDirAsync(temp)
 
   await Promise.all(
-    tmpFiles.map(async path => {
+    tmpFiles.map(async (path) => {
       return compiler.writeFileAsync(path.replace(temp, ''), await readFileAsync(path, 'utf-8'))
     })
   )
 
   await next()
 
-  await Promise.all(tmpFiles.map(x => unlinkAsync(x)))
+  await Promise.all(tmpFiles.map((x) => unlinkAsync(x)))
   return Promise.all(
-    compiler.files.map(async file => {
+    compiler.files.map(async (file) => {
       const sourceFile = join(src, file.filename)
       const tempFile = join(temp, file.filename)
       const fileContents = await maybeReadFileContentsAsync(sourceFile)

src/steps/bundle.ts

@@ -1,13 +1,12 @@
 import { NexeCompiler, NexeError } from '../compiler'
 import { resolve, relative } from 'path'
-import { each } from '@calebboyd/semaphore'
 import resolveFiles, { resolveSync } from 'resolve-dependencies'
-import { dequote, STDIN_FLAG, semverGt } from '../util'
+import { dequote, STDIN_FLAG, semverGt, each } from '../util'
 import { Readable } from 'stream'
 
 function getStdIn(stdin: Readable): Promise<string> {
   let out = ''
-  return new Promise(resolve => {
+  return new Promise((resolve) => {
     stdin
       .setEncoding('utf8')
       .on('readable', () => {
@@ -26,7 +25,7 @@ function getStdIn(stdin: Readable): Promise<string> {
 }
 
 export default async function bundle(compiler: NexeCompiler, next: any) {
-  const { bundle, cwd, input: inputPath } = compiler.options
+  const { bundle: doBundle, cwd, input: inputPath } = compiler.options
   let input = inputPath
   compiler.entrypoint = './' + relative(cwd, input)
 
@@ -36,14 +35,14 @@ export default async function bundle(compiler: NexeCompiler, next: any) {
     compiler.startup = ';require("module").runMain();'
   }
 
-  if (!bundle) {
+  if (!doBundle) {
     await compiler.addResource(resolve(cwd, input))
     return next()
   }
 
   let code = ''
-  if (typeof bundle === 'string') {
+  if (typeof doBundle === 'string') {
-    code = await require(bundle).createBundle(compiler.options)
+    code = await require(doBundle).createBundle(compiler.options)
   }
 
   if (input === STDIN_FLAG && (code = code || dequote(await getStdIn(process.stdin)))) {
@@ -62,20 +61,28 @@ export default async function bundle(compiler: NexeCompiler, next: any) {
     compiler.entrypoint = './' + relative(cwd, input)
   }
 
+  const step = compiler.log.step('Resolving dependencies...')
+
   const { files, warnings } = await resolveFiles(
     input,
-    ...Object.keys(compiler.bundle.index).filter(x => x.endsWith('.js')),
+    ...Object.keys(compiler.bundle.list).filter((x) => x.endsWith('.js') || x.endsWith('.mjs')),
     { cwd, expand: 'variable', loadContent: false }
   )
 
   if (
-    warnings.filter(x => x.startsWith('Error parsing file') && !x.includes('node_modules')).length
+    warnings.filter((x) => x.startsWith('Error parsing file') && !x.includes('node_modules')).length
   ) {
     throw new NexeError('Parsing Error:\n' + warnings.join('\n'))
   }
 
-  await each(Object.keys(files), (filename: string) => compiler.addResource(filename), {
+  //TODO: warnings.forEach((x) => console.log(x))
-    concurrency: 10
+
+  await Promise.all(
+    Object.entries(files).map(([key]) => {
+      step.log(`Including dependency: ${key}`)
+      return compiler.addResource(key)
     })
+  )
+
   return next()
 }

src/steps/download.ts

@@ -11,7 +11,7 @@ function fetchNodeSourceAsync(dest: string, url: string, step: LogStep, options
     .on('response', (res: IncomingMessage) => {
       const total = +res.headers['content-length']!
       let current = 0
-      res.on('data', data => {
+      res.on('data', (data) => {
         current += data.length
         setText((current / total) * 100)
         if (current === total) {
@@ -32,13 +32,13 @@ async function fetchPrebuiltBinary(compiler: NexeCompiler, step: any) {
       (res: IncomingMessage) => {
         const total = +res.headers['content-length']!
         let current = 0
-        res.on('data', data => {
+        res.on('data', (data) => {
           current += data.length
           step!.modify(`Downloading...${((current / total) * 100).toFixed()}%`)
         })
       }
     )
-  } catch (e) {
+  } catch (e: any) {
     if (e.statusCode === 404) {
       throw new NexeError(`${remoteAsset} is not available, create it using the --build flag`)
     } else {
@@ -58,7 +58,7 @@ export default async function downloadNode(compiler: NexeCompiler, next: () => P
     { sourceUrl, downloadOptions, build } = compiler.options,
     url = sourceUrl || `https://nodejs.org/dist/v${version}/node-v${version}.tar.gz`,
     step = log.step(
-      `Downloading ${build ? '' : 'pre-built '}Node.js${build ? `source from: ${url}` : ''}`
+      `Downloading ${build ? '' : 'pre-built '}Node.js${build ? ` source from: ${url}` : ''}`
     ),
     exeLocation = compiler.getNodeExecutableLocation(build ? undefined : target),
     downloadExists = await pathExistsAsync(build ? src : exeLocation)

src/steps/resource.ts

@@ -1,22 +1,25 @@
-import { isDirectoryAsync, each } from '../util'
+import { each } from '../util'
-import * as globs from 'globby'
+import globs from 'globby'
+import { resolve } from 'path'
 import { NexeCompiler } from '../compiler'
 
 export default async function resource(compiler: NexeCompiler, next: () => Promise<any>) {
-  const { cwd } = compiler.options
+  const { cwd, resources } = compiler.options
-  if (!compiler.options.resources.length) {
+  if (!resources.length) {
     return next()
   }
   const step = compiler.log.step('Bundling Resources...')
   let count = 0
-  await each(globs(compiler.options.resources, { cwd }), async file => {
+
-    if (await isDirectoryAsync(file)) {
+  // workaround for https://github.com/sindresorhus/globby/issues/127
-      return
+  // and https://github.com/mrmlnc/fast-glob#pattern-syntax
-    }
+  const resourcesWithForwardSlashes = resources.map((r) => r.replace(/\\/g, '/'))
+
+  await each(globs(resourcesWithForwardSlashes, { cwd, onlyFiles: true }), async (file) => {
     count++
     step.log(`Including file: ${file}`)
-    await compiler.addResource(file)
+    await compiler.addResource(resolve(cwd, file))
   })
-  step.log(`Included ${count} file(s). ${(compiler.resourceSize / 1e6).toFixed(3)} MB`)
+  step.log(`Included ${count} file(s)`)
   return next()
 }

src/steps/shim.ts

@@ -1,15 +1,21 @@
 import { NexeCompiler } from '../compiler'
 import { wrap } from '../util'
 
-export default async function(compiler: NexeCompiler, next: () => Promise<void>) {
+export default async function (compiler: NexeCompiler, next: () => Promise<void>) {
   await next()
-
   compiler.shims.push(
     wrap(
-      `process.__nexe = ${JSON.stringify(compiler.binaryConfiguration)};\n` +
+      [
-        '{{replace:lib/fs/patch.js}}' +
+        'process.__nexe = {};',
-        '\nshimFs(process.__nexe)' +
+        'const fsPatcher = (function() {',
-        `\n${compiler.options.fs ? '' : 'restoreFs()'}`
+        'const module = {exports: {}};',
+        'const exports = module.exports;',
+        '{{file("lib/fs/patch.bundle.js")}}',
+        'return module.exports;',
+        '})()',
+        'fsPatcher.shimFs(process.__nexe);',
+        compiler.options.fs ? '' : 'restoreFs();',
+      ].join('\n')
       //TODO support only restoring specific methods
     )
   )

src/target.ts

@@ -21,7 +21,7 @@ const prettyPlatform: { [key: string]: NodePlatform } = {
   mac: 'mac',
   linux: 'linux',
   static: 'alpine',
-  alpine: 'alpine'
+  alpine: 'alpine',
 }
 
 const prettyArch: { [key: string]: NodeArch } = {
@@ -35,7 +35,7 @@ const prettyArch: { [key: string]: NodeArch } = {
   amd64: 'x64',
   ia32: 'x86',
   x32: 'x86',
-  x64: 'x64'
+  x64: 'x64',
 }
 
 function isVersion(x: string) {
@@ -80,7 +80,7 @@ export function getTarget(target: string | Partial<NexeTarget> = ''): NexeTarget
   target
     .toLowerCase()
     .split('-')
-    .forEach(x => {
+    .forEach((x) => {
       if (isVersion(x)) {
         version = x.replace(/v/g, '')
       }

src/util.ts

@@ -1,9 +1,9 @@
 import { readFile, writeFile, stat } from 'fs'
 import { execFile } from 'child_process'
-import pify = require('pify')
+import { promisify } from 'util'
 import rimraf = require('rimraf')
 
-const rimrafAsync = pify(rimraf)
+const rimrafAsync = promisify(rimraf)
 export const STDIN_FLAG = '[stdin]'
 
 export async function each<T>(
@@ -26,7 +26,7 @@ function falseOnEnoent(e: any) {
 }
 
 function padRight(str: string, l: number) {
-  return (str + ' '.repeat(l)).substr(0, l)
+  return (str + ' '.repeat(l)).slice(0, l)
 }
 
 const bound: MethodDecorator = function bound<T>(
@@ -42,10 +42,10 @@ const bound: MethodDecorator = function bound<T>(
       Object.defineProperty(this, propertyKey as string, {
         configurable,
         value,
-        writable: true
+        writable: true,
       })
       return value
-    }
+    },
   }
 }
 
@@ -64,21 +64,21 @@ export interface ReadFileAsync {
   (path: string, encoding: string): Promise<string>
 }
 
-const readFileAsync = pify(readFile)
+const readFileAsync = promisify(readFile)
-const writeFileAsync = pify(writeFile)
+const writeFileAsync = promisify(writeFile)
-const statAsync = pify(stat)
+const statAsync = promisify(stat)
-const execFileAsync = pify(execFile)
+const execFileAsync = promisify(execFile)
 const isWindows = process.platform === 'win32'
 
 function pathExistsAsync(path: string) {
   return statAsync(path)
-    .then(x => true)
+    .then((x) => true)
     .catch(falseOnEnoent)
 }
 
 function isDirectoryAsync(path: string) {
   return statAsync(path)
-    .then(x => x.isDirectory())
+    .then((x) => x.isDirectory())
     .catch(falseOnEnoent)
 }
 /**
@@ -109,5 +109,5 @@ export {
   readFileAsync,
   pathExistsAsync,
   isDirectoryAsync,
-  writeFileAsync
+  writeFileAsync,
 }

tasks/build.ts

@@ -3,7 +3,7 @@ import { getUnBuiltReleases, getLatestGitRelease } from '../lib/releases'
 import { runDockerBuild } from './docker'
 import { getTarget, targetsEqual, NexeTarget } from '../lib/target'
 import { pathExistsAsync, readFileAsync, execFileAsync, semverGt } from '../lib/util'
-import got = require('got')
+import got from 'got'
 import { cpus } from 'os'
 
 const env = process.env,
@@ -14,12 +14,12 @@ const env = process.env,
   isMac = process.platform === 'darwin',
   headers = {
     Authorization: 'token ' + env.GITHUB_TOKEN,
-    'User-Agent': 'nexe (https://www.npmjs.com/package/nexe)'
+    'User-Agent': 'nexe (https://www.npmjs.com/package/nexe)',
   }
 
 if (require.main === module) {
   if (!isPullRequest) {
-    build().catch(x => {
+    build().catch((x) => {
       console.error(x)
       process.exit(1)
     })
@@ -31,10 +31,10 @@ async function build() {
   if (!releases.length) {
     return
   }
-  const windowsBuild = releases.find(x => x.platform === 'windows'),
+  const windowsBuild = releases.find((x) => x.platform === 'windows'),
-    macBuild = releases.find(x => x.platform === 'mac'),
+    macBuild = releases.find((x) => x.platform === 'mac'),
-    linux = releases.find(x => x.platform === 'linux'),
+    linux = releases.find((x) => x.platform === 'linux'),
-    alpine = releases.find(x => x.platform === 'alpine')
+    alpine = releases.find((x) => x.platform === 'alpine')
 
   let target: NexeTarget | undefined
 
@@ -62,7 +62,7 @@ async function build() {
       verbose: Boolean(env.NEXE_VERBOSE!),
       target,
       make: ['-j' + cpus().length],
-      output
+      output,
     }
   console.log('Building: ' + target + ' on ' + buildHost)
   const stop = keepalive()
@@ -80,19 +80,19 @@ async function build() {
     await assertNexeBinary(output)
     const gitRelease = await getLatestGitRelease({ headers }),
       unbuiltReleases = await getUnBuiltReleases({ headers })
-    if (!unbuiltReleases.some(x => targetsEqual(x, target!))) {
+    if (!unbuiltReleases.some((x) => targetsEqual(x, target!))) {
       console.log(`${target} already uploaded.`)
       process.exit(0)
       return
     }
     await got(gitRelease.upload_url.split('{')[0], {
-      query: { name: target.toString() },
+      searchParams: { name: target.toString() },
       body: await readFileAsync(output),
       headers: {
         ...headers,
-        'Content-Type': 'application/octet-stream'
+        'Content-Type': 'application/octet-stream',
-      }
+      },
-    }).catch(reason => {
+    }).catch((reason) => {
       console.log(reason && reason.response && reason.response.body)
       throw reason
     })
@@ -107,7 +107,7 @@ function keepalive() {
 }
 
 function assertNexeBinary(file: string) {
-  return execFileAsync(file).catch(e => {
+  return execFileAsync(file).catch((e) => {
     if (e && e.stack && e.stack.includes('Invalid Nexe binary')) {
       return
     }

tasks/docker.ts

@@ -1,12 +1,12 @@
 import { NexeTarget, architectures } from '../lib/target'
 import { writeFileAsync, readFileAsync } from '../lib/util'
-import got = require('got')
+import got from 'got'
 import execa = require('execa')
 import { appendFileSync } from 'fs'
 
 function alpine(target: NexeTarget) {
   return `
-FROM ${target.arch === 'x64' ? '' : 'i386/'}alpine:3.4
+FROM ${target.arch === 'x64' ? '' : 'i386/'}alpine:3.12
 RUN apk add --no-cache curl make gcc g++ binutils-gold python linux-headers paxctl libgcc libstdc++ git vim tar gzip wget
 ENV NODE_VERSION=${target.version}
 ENV NEXE_VERSION=latest
@@ -50,7 +50,7 @@ export async function runDockerBuild(target: NexeTarget) {
     output.push(await execa(`docker run -d --name nexe nexe-docker sh`, { shell: true }))
     output.push(await execa(`docker cp nexe:/out out`, { shell: true }))
     output.push(await execa(`docker rm nexe`, { shell: true }))
-  } catch (e) {
+  } catch (e: any) {
     console.log('Error running docker')
     appendFileSync(outFilename, e.message)
   } finally {
@@ -58,16 +58,11 @@ export async function runDockerBuild(target: NexeTarget) {
       appendFileSync(outFilename, x.stderr)
       appendFileSync(outFilename, x.stdout)
     })
-    await got(
+    await got(`https://transfer.sh/${Math.random().toString(36).substring(2)}.txt`, {
-      `https://transfer.sh/${Math.random()
-        .toString(36)
-        .substring(2)}.txt`,
-      {
       body: await readFileAsync(outFilename),
-        method: 'PUT'
+      method: 'PUT',
-      }
+    })
-    )
+      .then((x) => console.log('Posted docker log: ', x.body))
-      .then(x => console.log('Posted docker log: ', x.body))
+      .catch((e) => console.log('Error posting log', e))
-      .catch(e => console.log('Error posting log', e))
   }
 }

tasks/post-build.ts

@@ -1,11 +1,10 @@
 import { writeFileSync, readFileSync } from 'fs'
+import { template } from 'lodash'
 
 /**
- * post build step to insert code files into code files (naively).
+ * post build step to insert code files into code files.
- * '{{replace:path/to/file}}' => "file contents"
  * And the package.json version.
  */
-//inject('plugins/nexe-daemon/lib/index.js')
 cp('src/fs/package.json', 'lib/fs/package.json')
 cp('src/fs/bootstrap.js', 'lib/fs/bootstrap.js')
 cp('src/fs/README.md', 'lib/fs/README.md')
@@ -14,18 +13,12 @@ inject('lib/patches/third-party-main.js')
 inject('lib/steps/shim.js')
 inject('lib/options.js', JSON.stringify(require('../package.json').version))
 
-function inject(filename: string, ...replacements: string[]) {
+function inject(filename: string, version?: string) {
-  let contents = readFileSync(filename, 'utf8')
+  const contents = template(readFileSync(filename, 'utf8'), {
-  contents = contents.replace(/('{{(.*)}}')/g, (substring: string, ...matches: string[]) => {
+    interpolate: /'\{\{([\s\S]*?)\}\}'/,
-    if (!matches || !matches[1]) {
+  })({
-      return substring
+    file: (path: string) => JSON.stringify(readFileSync(path, 'utf8')),
-    }
+    version,
-    const [replace, file] = matches[1].split(':')
-    if (replace !== 'replace') {
-      return substring
-    }
-    console.log('Replacing: ', substring)
-    return replacements[+file] ? replacements[+file] : JSON.stringify(readFileSync(file, 'utf8'))
   })
   writeFileSync(filename, contents)
   console.log(`Wrote: ${filename}`)

tasks/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "noEmit": true
+  },
+  "include":[
+    "*.ts"
+  ]
+}
+

test/integration/index.js

@@ -0,0 +1,23 @@
+const { mkdtemp, copyFile } = require('fs/promises')
+const os = require('os')
+const path = require('path')
+const rimraf = require('rimraf')
+const cp = require('child_process')
+
+async function runTests() {
+  const tempdir = await mkdtemp(path.join(os.tmpdir(), 'nexe-integration-tests-'))
+  const executable = path.join(tempdir, path.basename(process.argv[0]))
+  await copyFile(process.argv[0], executable)
+  process.on('beforeExit', () => rimraf.sync(tempdir))
+  cp.spawn(executable,
+    [
+    path.join(tempdir, 'node_modules/mocha/bin/mocha.js'),
+      path.join(tempdir, 'test/integration/tests.integration-spec.js')
+    ],
+    { stdio: ['inherit', 'inherit', 'inherit', 'ipc'], cwd: tempdir }
+  ).on('exit', (code) => {
+    process.exitCode = code
+  })
+}
+
+runTests()

test/integration/tests.integration-spec.js

@@ -0,0 +1,120 @@
+const { expect } = require('chai')
+const fs = require('fs')
+const { dirname, basename } = require('path')
+
+const files = { zipFs: 'test/integration/tests.integration-spec.js', real: 'real', real2: 'real2' }
+describe('SnapshotZipFS', () => {
+  console.error('Note: these tests are order dependant, so subsequent failures are likely a flow on effect.')
+  it('checks existance from the zipFs', () => expect(fs.existsSync(files.zipFs)).to.equal(true))
+  it('checks non-existance from the zipFs', () => expect(fs.existsSync('not found')).to.equal(false))
+  it('reads from the zipFs', () => expect(fs.readFileSync(files.zipFs, 'utf8')).to.include('SnapshotZipFS'))
+  it('copies from the zipFs', () => expect(() => fs.copyFileSync(files.zipFs, files.real)).not.to.throw())
+  it('reads from the real fs', () => expect(fs.readFileSync(files.real, 'utf8')).to.include('SnapshotZipFS'))
+  it('checks non-existance from the real fs', () => expect(fs.existsSync(files.real2)).to.equal(false))
+  it('copies from the real fs', () => expect(() => fs.copyFileSync(files.real, files.real2)).not.to.throw())
+  it('checks existance from the real fs', () => expect(fs.existsSync(files.real2)).to.equal(true))
+  it('unlinks from the real fs', () => expect(() => fs.unlinkSync(files.real2)).not.to.throw())
+  it('symlinks the real fs', () => expect(() => fs.symlinkSync('tmp', files.real2)).not.to.throw())
+  it('readlinks the real fs', () => expect(fs.readlinkSync(files.real2)).to.equal('tmp'))
+  it('truncates the real fs', () => expect(() => fs.truncateSync(files.real)).not.to.throw())
+  it('writeFiles the real fs', () => expect(() => fs.writeFileSync(files.real2, 'testing')).not.to.throw())
+  it('accesses the real fs', () => expect(() => fs.accessSync(files.real)).not.to.throw())
+  it('accesses the zipFs', () => expect(() => fs.accessSync(files.zipFs)).not.to.throw())
+  it('stats the real fs', () => expect(fs.statSync(files.real2).size).to.be.greaterThan(0))
+  it('stats the zipFs', () => expect(fs.statSync(files.zipFs).size).to.be.greaterThan(0))
+  it('readdirs from the zipFs', () => expect(fs.readdirSync(dirname(files.zipFs))).to.include(basename(files.zipFs)))
+  it('readdirs from the real fs', () => expect(fs.readdirSync('.')).to.include(files.real))
+  it('readdirs from both', () => {
+    expect(fs.readdirSync('.')).to.include(files.real),
+    expect(fs.readdirSync('.')).to.include('test')
+  })
+  let dir
+  it('opendirs the zipFs fs', async () => {
+    expect(() => dir = fs.opendirSync(dirname(files.zipFs))).not.to.throw()
+    const names = []
+    for await (const dirent of dir) {
+      names.push(dirent.name)
+    }
+    expect(names).to.include(basename(files.zipFs))
+  })
+  it('opendirs the real fs and zipFs', async () => {
+    expect(() => dir = fs.opendirSync('.')).not.to.throw()
+    const names = []
+    for await (const dirent of dir) {
+      names.push(dirent.name)
+    }
+    expect(names).to.include(files.real)
+    expect(names).to.include('test')
+  })
+  it('createWriteStreams to the real fs', () => expect(() => fs.createWriteStream('createWriteStream')).not.to.throw())
+  it('createReadStreams to the real fs', () => expect(() => fs.createReadStream(files.real)).not.to.throw())
+  it('createReadStreams to the zipFs', () => expect(() => fs.createReadStream(files.zipFs)).not.to.throw())
+  it('renames to the realFs', () => {
+    expect(() => fs.renameSync(files.real2, 'rename')).not.to.throw()
+    expect(fs.existsSync('rename')).to.equal(true)
+  })
+
+  describe('write actions to the zipFs', () => {
+    it(`won't truncate to the zipFs`, () => expect(() => fs.truncateSync(files.zipFs)).to.throw())
+    it(`won't unlink from the zipFs`, () => expect(() => fs.unlinkSync(files.zipFs)).to.throw())
+    it(`won't appendFile to the zipFs`, () => expect(() => fs.appendFileSync(files.zipFs, 'xxx')).to.throw())
+    it(`won't symlink to the zipFs`, () => expect(() => fs.symlinkSync('tmp', files.zipFs)).to.throw())
+    it(`won't chmod to the zipFs`, () => expect(() => fs.chmodSync(files.zipFs, 0o666)).to.throw())
+    it(`won't chown to the zipFs`, () => expect(() => fs.chownSync(files.zipFs, 0, 0)).to.throw())
+    it(`won't writeFile the zipFs`, () => expect(() => fs.writeFileSync(files.zipFs, 'testing')).to.throw())
+    it(`won't createWriteStreams to the zipFs`, () => expect(() => fs.createWriteStream(files.zipFs)).to.throw())
+    it(`won't rename to the zipFs`, () => expect(() => fs.renameSync(files.real, files.zipFs)).to.throw())
+  })
+
+  ;[ 'zipFs', 'real' ].forEach((k) => {
+    it(`watches the ${k} fs`, () => expect(() => fs.watch(files[k], () => null).close()).not.to.throw())
+    it(`watchFiles the ${k} fs`, () => expect(() => fs.watchFile(files[k], () => null)).not.to.throw())
+    it(`unwatchFiles the ${k} fs`, () => expect(() => fs.unwatchFile(files[k])).not.to.throw())
+  })
+  let buffer = Buffer.alloc(8092), fd
+  describe('zipfs file descriptors', () => {
+    it('opens files in the zipFs', () => {
+      expect(() => (fd = fs.openSync(files.zipFs, 'a+'))).not.to.throw()
+      expect(fd).to.not.be.null
+    })
+    it('reads file descriptors from the zipFs', () => {
+      expect(() => fs.readSync(fd, buffer)).not.to.throw()
+      expect(buffer.toString()).to.include('SnapshotZipFS')
+    })
+    it('fstats the zipFs', () => expect(fs.fstatSync(fd).size).to.be.greaterThan(0))
+    it(`won't write to the zipFs`, () => expect(() => fs.writeSync(fd, 'xxx')).to.throw())
+    it(`won't fchmod the zipFs`, () => expect(() => fs.fchmodSync(fd)).to.throw())
+    it(`won't fchown the zipFs`, () => expect(() => fs.fchownSync(fd)).to.throw())
+    it(`won't ftruncate the zipFs`, () => expect(() => fs.ftruncateSync(fd)).to.throw())
+    it('closes file descriptors from the zipFs', () => expect(() => fs.closeSync(fd)).not.to.throw())
+  })
+  fd = null
+  buffer = Buffer.alloc(8092)
+  describe('real file descriptors', () => {
+    it('opens files in the real fs', () => {
+      expect(() => (fd = fs.openSync(files.real2, 'a+'))).not.to.throw()
+      expect(fd).to.not.be.null
+    })
+    it('reads file descriptors from the real fs', () => {
+      expect(() => fs.readSync(fd, buffer)).not.to.throw()
+      expect(buffer.toString()).to.include('SnapshotZipFS')
+    })
+    it('will write to the real fs', () => expect(() => fs.writeSync(fd, 'xxx')).not.to.throw())
+    it('fstats the real fs', () => expect(fs.fstatSync(fd).size).to.be.greaterThan(0))
+    it('closes file descriptors from the real fs', () => expect(() => fs.closeSync(fd)).not.to.throw())
+  })
+  describe('path clashes', () => {
+    it('delegates directory creation to the real fs', () => expect(() => fs.mkdirSync('test')).not.to.throw())
+    it('delegates directory removal to the real fs', () => expect(() => fs.rmdirSync('test')).not.to.throw())
+  })
+  describe('requiring modules', () => {
+    it('resolves modules from the zipFs', () => expect(() => require('resolve-dependencies')).not.to.throw())
+    it('resolves modules from the real fs', () => {
+      fs.mkdirSync('node_modules')
+      fs.mkdirSync('node_modules/fake-package')
+      fs.writeFileSync('node_modules/fake-package/package.json', '{ "name": "fake-package", "main": "some-file.js"}')
+      fs.writeFileSync('node_modules/fake-package/some-file.js', `module.exports = { fake: 'package' }`)
+      expect(require('fake-package')).to.eql({ fake: 'package' })
+    })
+  })
+})

test/mocha.opts

@@ -1,4 +0,0 @@
-./test/**/*.spec.ts
---check-leaks
---require ts-node/register
---recursive

test/options.spec.ts

@@ -39,6 +39,26 @@ describe('options', () => {
       expect(options.output).to.equal(path.resolve(cwd, `abc${ext}`))
     })
   })
+
+  describe('remote', () => {
+    it('should use default remote', () => {
+      const options = normalizeOptions({})
+      expect(options.remote).to.equal('https://github.com/nexe/nexe/releases/download/v3.3.3/')
+    })
+    it('should append trailing slash to third-party remote if necessary', () => {
+      const options = normalizeOptions({
+        remote: 'https://sitejs.org/nexe'
+      })
+      expect(options.remote).to.equal('https://sitejs.org/nexe/')
+    })
+    it('should not append trailing slash to third-party remote that already has one', () => {
+      const options = normalizeOptions({
+        remote: 'https://sitejs.org/nexe/'
+      })
+      expect(options.remote).to.equal('https://sitejs.org/nexe/')
+    })
+  })
+
   describe('output', () => {
     it('should work', () => {
       const options = normalizeOptions({

tsconfig.json

@@ -1,8 +1,9 @@
 {
   "compilerOptions": {
-    "target":"es5",
+    "target":"es2015",
     "skipLibCheck": true,
     "experimentalDecorators": true,
+    "esModuleInterop": true,
     "lib": ["es2018"],
     "module": "commonjs",
     "outDir": "./lib",

webpack.config.ts

@@ -0,0 +1,7 @@
+import * as wcp from 'webpack-config-prefabs'
+export = wcp.nodeLibrary(module, {
+  enableTypescript: true,
+  entry: './src/fs/patch.ts',
+  minimize: false,
+  outputFilepath: './lib/fs/patch.bundle.js',
+});