Use files-property in package.json to be more precise about the size...

bin/analyze-module-size.js

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 var {analyze} = require('../src/index')
-analyze(process.cwd())
+analyze(process.cwd(), {depth: process.argv[2]})
   .then(
     (output) => process.stdout.write(output),
     (err) => process.stderr.write(err.stack + '\n')

package.json

@@ -35,6 +35,7 @@
     "chalk": "^1.1.3",
     "deep-aplus": "^1.0.4",
     "glob": "^7.1.1",
+    "globby": "^6.1.0",
     "pify": "^2.3.0"
   },
   "devDependencies": {
@@ -51,6 +52,7 @@
     "istanbul": "^0.4.5",
     "lodash.sortby": "^4.7.0",
     "mocha": "^3.2.0",
+    "mock-fs": "^4.3.0",
     "thoughtful-release": "^0.3.1",
     "trace-and-clarify-if-possible": "^1.0.0"
   },
@@ -60,6 +62,7 @@
     ]
   },
   "files": [
+    "bin",
     "src"
   ],
   "keywords": []

src/Package.js

@@ -68,7 +68,7 @@ class Package {
    */
   static loadFrom (packageJsonPath) {
     var json = readFile(packageJsonPath).then(JSON.parse)
-    var stats = PackageStats.loadFrom(packageJsonPath)
+    var stats = PackageStats.loadFrom(packageJsonPath, json)
     return deep({json, stats})
       .then(({json, stats}) => new Package(json, stats))
   }

src/PackageStats.js

@@ -3,7 +3,7 @@ const deep = require('deep-aplus')(Promise)
 const pify = require('pify')
 const fs = require('fs')
 const stat = pify(fs.stat)
-const glob = pify(require('glob'))
+const {validFiles} = require('./validFiles')
 
 /**
  * Computes and aggregates a number of statistics from a package directory
@@ -61,15 +61,20 @@ class PackageStats {
   }
 
   /**
+   * Create PackageStats from the location of a package.json file
    *
-   * @param packageJsonPath
-   * @return {Promise<PackageStats>}
+   * @param packageJsonPath path to the package.json file
+   * @param {Promise<object>|object=} packageJson the parse package.json file,
+   *    either directly or as Promise
+   * @return {Promise<PackageStats>} a promise for the PackageStats object
    */
-  static loadFrom (packageJsonPath) {
-    var directory = path.dirname(packageJsonPath)
-    return glob('**', {dot: true, cwd: directory, mark: true, ignore: 'node_modules/**'})
-    // Add the directory itself
-      .then(files => ['./'].concat(files))
+  static loadFrom (packageJsonPath, packageJson = {}) {
+    const directory = path.dirname(packageJsonPath)
+
+    return Promise.resolve(packageJson)
+      .then((packageJson) => validFiles(directory, packageJson))
+      // Add the directory itself
+      .then(files => files.map((file) => path.normalize(file)))
       // Gather stats
       .then(files => files.map(file => ({file: path.join(directory, file), stat: stat(path.join(directory, file))})))
       // Wait for promises

src/index.js

@@ -10,24 +10,36 @@ const archy = require('archy')
 const chalk = require('chalk')
 const path = require('path')
 
-function analyze (cwd) {
+/**
+ *
+ * @param cwd
+ * @param options
+ * @param {number} options.depth The number of levels to display in the tree-view
+ */
+function analyze (cwd, options) {
   return DependencyTree.loadFrom(path.join(cwd, 'package.json'))
     .then(function (tree) {
       return archy({
-        label: `total-size: ${tree.rootPackage.totalStats().totalBlockSize() / 1024}k`,
-        nodes: toArchy(tree.prod)
+        label: `size: ${tree.rootPackage.stats.totalBlockSize() / 1024}k... with-dependencies: ${tree.rootPackage.totalStats().totalBlockSize() / 1024}k`,
+        nodes: toArchy(tree.prod, options && options.depth)
       })
     })
 }
 
-function toArchy (pkgs) {
+/**
+ *
+ * @param pkgs
+ * @param {number=} depth
+ */
+function toArchy (pkgs, depth) {
+  if (depth <= 0) return []
   const result = pkgs.map(pkg => {
     const blockSize = pkg.totalStats().totalBlockSize()
     const dependencyCount = pkg.totalDependencies()
     return {
       label: `${pkg.packageJson._id}, ${chalk.red(blockSize / 1024 + 'k')}, ${dependencyCount} deps`,
       size: blockSize,
-      nodes: toArchy(pkg.dependencies)
+      nodes: toArchy(pkg.dependencies, depth && depth - 1)
     }
   })
   return sortby(result, (node) => {

src/validFiles.js

@@ -0,0 +1,93 @@
+var globby = require('globby')
+var deep = require('deep-aplus')(Promise)
+
+/**
+ * List of ignored files (from https://docs.npmjs.com/files/package.json#files)
+ * @type {string[]}
+ */
+var alwaysIgnored = [
+  '.git',
+  'CVS',
+  '.svn',
+  '.hg',
+  '.lock-wscript',
+  '.wafpickle-*',
+  '.*.swp',
+  '.DS_Store',
+  '._*',
+  'npm-debug.log',
+  '.npmrc',
+  'node_modules',
+  'config.gypi',
+  '*.orig'
+]
+
+var alwaysIncluded = [
+  'package.json'
+]
+
+var alwaysIncludedIgnoreCase = [
+  'README', 'README.*',
+  'CHANGES', 'CHANGES.*',
+  'CHANGELOG', 'CHANGELOG.*',
+  'HISTORY', 'HISTORY.*',
+  'LICENSE', 'LICENSE.*',
+  'LICENCE', 'LICENCE.*',
+  'NOTICE', 'NOTICE.*'
+]
+
+/**
+ *
+ * @param {string} cwd the projects basedir
+ * @param {{files: string[]} packageJson the parsed package.json
+ * @param {string[]} npmIgnore non-comment lines of the npm-ignore file
+ * @returns {Promise.<string[]>} a promise for a list of valid files in the project
+ */
+function validFiles (cwd, packageJson, npmIgnore = []) {
+  var ignored = alwaysIgnored.concat(npmIgnore).map(withChildren)
+
+  var globs
+  if (packageJson.files) {
+    globs = packageJson.files
+      .map((file) => file.replace(/\/?$/, '{,/**}'))
+      .concat(alwaysIncluded)
+  } else {
+    globs = '**'
+  }
+
+  return deep({
+    withCase: globby(globs, {nocase: false, ignore: ignored, cwd, mark: true}),
+    ignoreCase: globby(alwaysIncludedIgnoreCase, {nocase: true, ignore: ignored, cwd, mark: true})
+  })
+  // Join
+    .then(({withCase, ignoreCase}) => withCase.concat(ignoreCase, '/'))
+    // remove duplicates
+    .then(files => Array.from(new Set(files)))
+}
+
+/**
+ * Returns a glob the matches the file itself and its children (if it is an directory)
+ * @param file
+ */
+function withChildren (file) {
+  return file.replace(/\/?$/, '{,/**}')
+}
+
+/**
+ * Returns an array of globs that match a file, its children (if it is an directory) and its
+ * parent directories (recursively)
+ * @param file
+ */
+function withParentsAndChildren (file) {
+  // Determine globs for parents matching
+  const globs = file.replace(/\/$/, '').match(/.*?\//g)
+    .map((item, index, array) => array.slice(0, index + 1).join(''))
+  // Add pattern to match children
+  globs.push(withChildren(file))
+  return globs
+}
+
+module.exports = {
+  validFiles,
+  withParentsAndChildren
+}

test/Package-spec.js

@@ -24,6 +24,22 @@ describe('The Package-class:', function () {
           ])
         })
     })
+
+    it('should respect the files property in the package.json', function () {
+      return Package.loadFrom('test/fixtures/project3/package.json')
+        .then((pkg) => {
+          expect(pkg.packageJson).to.deep.equal(require('./fixtures/project3/package.json'))
+          expect(pkg.stats.files.map((f) => f.file).sort()).to.deep.equal([
+            'test/fixtures/project3/',
+            'test/fixtures/project3/LICENSE.md',
+            'test/fixtures/project3/README',
+            'test/fixtures/project3/dir/',
+            'test/fixtures/project3/dir/file2.txt',
+            'test/fixtures/project3/file3.txt',
+            'test/fixtures/project3/package.json'
+          ])
+        })
+    })
   })
 
   it('should contain "/" as location by default (because this is the base package.json then', function () {

test/PackageStats-spec.js

@@ -23,6 +23,22 @@ describe('The PackageStats-class', function () {
       })
   })
 
+  it('should filter files via the provided in files-property', function () {
+    return PackageStats.loadFrom('test/fixtures/project3/package.json', {files: ['dir/', 'file3.txt']})
+      .then((packageStats) => {
+        expect(packageStats.directory).to.equal('test/fixtures/project3')
+        expect(sortedNameAndSize(packageStats.files)).to.deep.equal([
+          f('test/fixtures/project3/'),
+          f('test/fixtures/project3/LICENSE.md'),
+          f('test/fixtures/project3/README'),
+          f('test/fixtures/project3/dir/'),
+          f('test/fixtures/project3/dir/file2.txt'),
+          f('test/fixtures/project3/file3.txt'),
+          f('test/fixtures/project3/package.json')
+        ])
+      })
+  })
+
   it('should compute the byte-size of all the files in a directory', function () {
     return PackageStats.loadFrom('test/fixtures/project1/package.json')
       .then((packageStats) => {

test/fixtures/moduleWithDeps.txt

@@ -1,4 +1,4 @@
-total-size: 56k
+size: 24k... with-dependencies: 56k
 ├─┬ dep1@1.0.0, 16k, 1 deps
 │ └── dep1a@1.0.0, 8k, 0 deps
 └─┬ dep2@1.0.0, 16k, 1 deps

test/fixtures/project3/README

@@ -0,0 +1 @@
+a readme

test/fixtures/project3/dir/file2.txt

@@ -0,0 +1 @@
+a

test/fixtures/project3/dir2/file2.txt

@@ -0,0 +1 @@
+a

test/fixtures/project3/file3.txt

@@ -0,0 +1 @@
+ab

test/fixtures/project3/file5000.txt

@@ -0,0 +1,100 @@
+0123456789012345678901234567890123456789012345678
+0123456789012345678901234567890123456789012345678
+0123456789012345678901234567890123456789012345678
+0123456789012345678901234567890123456789012345678
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test/fixtures/project3/file6.txt

@@ -0,0 +1 @@
+abcef