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| 1 | +'use strict' |
| 2 | + |
| 3 | +// walk the tree of deps starting from the top level list of bundled deps |
| 4 | +// Any deps at the top level that are depended on by a bundled dep that |
| 5 | +// does not have that dep in its own node_modules folder are considered |
| 6 | +// bundled deps as well. This list of names can be passed to npm-packlist |
| 7 | +// as the "bundled" argument. Additionally, packageJsonCache is shared so |
| 8 | +// packlist doesn't have to re-read files already consumed in this pass |
| 9 | + |
| 10 | +const fs = require('fs') |
| 11 | +const path = require('path') |
| 12 | +const EE = require('events').EventEmitter |
| 13 | +// we don't care about the package bins, but we share a pj cache |
| 14 | +// with other modules that DO care about it, so keep it nice. |
| 15 | +const normalizePackageBin = require('npm-normalize-package-bin') |
| 16 | + |
| 17 | +class BundleWalker extends EE { |
| 18 | + constructor (opt) { |
| 19 | + opt = opt || {} |
| 20 | + super(opt) |
| 21 | + this.path = path.resolve(opt.path || process.cwd()) |
| 22 | + |
| 23 | + this.parent = opt.parent || null |
| 24 | + if (this.parent) { |
| 25 | + this.result = this.parent.result |
| 26 | + // only collect results in node_modules folders at the top level |
| 27 | + // since the node_modules in a bundled dep is included always |
| 28 | + if (!this.parent.parent) { |
| 29 | + const base = path.basename(this.path) |
| 30 | + const scope = path.basename(path.dirname(this.path)) |
| 31 | + this.result.add(/^@/.test(scope) ? scope + '/' + base : base) |
| 32 | + } |
| 33 | + this.root = this.parent.root |
| 34 | + this.packageJsonCache = this.parent.packageJsonCache |
| 35 | + } else { |
| 36 | + this.result = new Set() |
| 37 | + this.root = this.path |
| 38 | + this.packageJsonCache = opt.packageJsonCache || new Map() |
| 39 | + } |
| 40 | + |
| 41 | + this.seen = new Set() |
| 42 | + this.didDone = false |
| 43 | + this.children = 0 |
| 44 | + this.node_modules = [] |
| 45 | + this.package = null |
| 46 | + this.bundle = null |
| 47 | + } |
| 48 | + |
| 49 | + addListener (ev, fn) { |
| 50 | + return this.on(ev, fn) |
| 51 | + } |
| 52 | + |
| 53 | + on (ev, fn) { |
| 54 | + const ret = super.on(ev, fn) |
| 55 | + if (ev === 'done' && this.didDone) { |
| 56 | + this.emit('done', this.result) |
| 57 | + } |
| 58 | + return ret |
| 59 | + } |
| 60 | + |
| 61 | + done () { |
| 62 | + if (!this.didDone) { |
| 63 | + this.didDone = true |
| 64 | + if (!this.parent) { |
| 65 | + const res = Array.from(this.result) |
| 66 | + this.result = res |
| 67 | + this.emit('done', res) |
| 68 | + } else { |
| 69 | + this.emit('done') |
| 70 | + } |
| 71 | + } |
| 72 | + } |
| 73 | + |
| 74 | + start () { |
| 75 | + const pj = path.resolve(this.path, 'package.json') |
| 76 | + if (this.packageJsonCache.has(pj)) { |
| 77 | + this.onPackage(this.packageJsonCache.get(pj)) |
| 78 | + } else { |
| 79 | + this.readPackageJson(pj) |
| 80 | + } |
| 81 | + return this |
| 82 | + } |
| 83 | + |
| 84 | + readPackageJson (pj) { |
| 85 | + fs.readFile(pj, (er, data) => |
| 86 | + er ? this.done() : this.onPackageJson(pj, data)) |
| 87 | + } |
| 88 | + |
| 89 | + onPackageJson (pj, data) { |
| 90 | + try { |
| 91 | + this.package = normalizePackageBin(JSON.parse(data + '')) |
| 92 | + } catch (er) { |
| 93 | + return this.done() |
| 94 | + } |
| 95 | + this.packageJsonCache.set(pj, this.package) |
| 96 | + this.onPackage(this.package) |
| 97 | + } |
| 98 | + |
| 99 | + allDepsBundled (pkg) { |
| 100 | + return Object.keys(pkg.dependencies || {}).concat( |
| 101 | + Object.keys(pkg.optionalDependencies || {})) |
| 102 | + } |
| 103 | + |
| 104 | + onPackage (pkg) { |
| 105 | + // all deps are bundled if we got here as a child. |
| 106 | + // otherwise, only bundle bundledDeps |
| 107 | + // Get a unique-ified array with a short-lived Set |
| 108 | + const bdRaw = this.parent ? this.allDepsBundled(pkg) |
| 109 | + : pkg.bundleDependencies || pkg.bundledDependencies || [] |
| 110 | + |
| 111 | + const bd = Array.from(new Set( |
| 112 | + Array.isArray(bdRaw) ? bdRaw |
| 113 | + : bdRaw === true ? this.allDepsBundled(pkg) |
| 114 | + : Object.keys(bdRaw))) |
| 115 | + |
| 116 | + if (!bd.length) { |
| 117 | + return this.done() |
| 118 | + } |
| 119 | + |
| 120 | + this.bundle = bd |
| 121 | + this.readModules() |
| 122 | + } |
| 123 | + |
| 124 | + readModules () { |
| 125 | + readdirNodeModules(this.path + '/node_modules', (er, nm) => |
| 126 | + er ? this.onReaddir([]) : this.onReaddir(nm)) |
| 127 | + } |
| 128 | + |
| 129 | + onReaddir (nm) { |
| 130 | + // keep track of what we have, in case children need it |
| 131 | + this.node_modules = nm |
| 132 | + |
| 133 | + this.bundle.forEach(dep => this.childDep(dep)) |
| 134 | + if (this.children === 0) { |
| 135 | + this.done() |
| 136 | + } |
| 137 | + } |
| 138 | + |
| 139 | + childDep (dep) { |
| 140 | + if (this.node_modules.indexOf(dep) !== -1) { |
| 141 | + if (!this.seen.has(dep)) { |
| 142 | + this.seen.add(dep) |
| 143 | + this.child(dep) |
| 144 | + } |
| 145 | + } else if (this.parent) { |
| 146 | + this.parent.childDep(dep) |
| 147 | + } |
| 148 | + } |
| 149 | + |
| 150 | + child (dep) { |
| 151 | + const p = this.path + '/node_modules/' + dep |
| 152 | + this.children += 1 |
| 153 | + const child = new BundleWalker({ |
| 154 | + path: p, |
| 155 | + parent: this, |
| 156 | + }) |
| 157 | + child.on('done', _ => { |
| 158 | + if (--this.children === 0) { |
| 159 | + this.done() |
| 160 | + } |
| 161 | + }) |
| 162 | + child.start() |
| 163 | + } |
| 164 | +} |
| 165 | + |
| 166 | +class BundleWalkerSync extends BundleWalker { |
| 167 | + start () { |
| 168 | + super.start() |
| 169 | + this.done() |
| 170 | + return this |
| 171 | + } |
| 172 | + |
| 173 | + readPackageJson (pj) { |
| 174 | + try { |
| 175 | + this.onPackageJson(pj, fs.readFileSync(pj)) |
| 176 | + } catch { |
| 177 | + // empty catch |
| 178 | + } |
| 179 | + return this |
| 180 | + } |
| 181 | + |
| 182 | + readModules () { |
| 183 | + try { |
| 184 | + this.onReaddir(readdirNodeModulesSync(this.path + '/node_modules')) |
| 185 | + } catch { |
| 186 | + this.onReaddir([]) |
| 187 | + } |
| 188 | + } |
| 189 | + |
| 190 | + child (dep) { |
| 191 | + new BundleWalkerSync({ |
| 192 | + path: this.path + '/node_modules/' + dep, |
| 193 | + parent: this, |
| 194 | + }).start() |
| 195 | + } |
| 196 | +} |
| 197 | + |
| 198 | +const readdirNodeModules = (nm, cb) => { |
| 199 | + fs.readdir(nm, (er, set) => { |
| 200 | + if (er) { |
| 201 | + cb(er) |
| 202 | + } else { |
| 203 | + const scopes = set.filter(f => /^@/.test(f)) |
| 204 | + if (!scopes.length) { |
| 205 | + cb(null, set) |
| 206 | + } else { |
| 207 | + const unscoped = set.filter(f => !/^@/.test(f)) |
| 208 | + let count = scopes.length |
| 209 | + scopes.forEach(scope => { |
| 210 | + fs.readdir(nm + '/' + scope, (readdirEr, pkgs) => { |
| 211 | + if (readdirEr || !pkgs.length) { |
| 212 | + unscoped.push(scope) |
| 213 | + } else { |
| 214 | + unscoped.push.apply(unscoped, pkgs.map(p => scope + '/' + p)) |
| 215 | + } |
| 216 | + if (--count === 0) { |
| 217 | + cb(null, unscoped) |
| 218 | + } |
| 219 | + }) |
| 220 | + }) |
| 221 | + } |
| 222 | + } |
| 223 | + }) |
| 224 | +} |
| 225 | + |
| 226 | +const readdirNodeModulesSync = nm => { |
| 227 | + const set = fs.readdirSync(nm) |
| 228 | + const unscoped = set.filter(f => !/^@/.test(f)) |
| 229 | + const scopes = set.filter(f => /^@/.test(f)).map(scope => { |
| 230 | + try { |
| 231 | + const pkgs = fs.readdirSync(nm + '/' + scope) |
| 232 | + return pkgs.length ? pkgs.map(p => scope + '/' + p) : [scope] |
| 233 | + } catch (er) { |
| 234 | + return [scope] |
| 235 | + } |
| 236 | + }).reduce((a, b) => a.concat(b), []) |
| 237 | + return unscoped.concat(scopes) |
| 238 | +} |
| 239 | + |
| 240 | +const walk = (options, callback) => { |
| 241 | + const p = new Promise((resolve, reject) => { |
| 242 | + new BundleWalker(options).on('done', resolve).on('error', reject).start() |
| 243 | + }) |
| 244 | + return callback ? p.then(res => callback(null, res), callback) : p |
| 245 | +} |
| 246 | + |
| 247 | +const walkSync = options => { |
| 248 | + return new BundleWalkerSync(options).start().result |
| 249 | +} |
| 250 | + |
| 251 | +module.exports = walk |
| 252 | +walk.sync = walkSync |
| 253 | +walk.BundleWalker = BundleWalker |
| 254 | +walk.BundleWalkerSync = BundleWalkerSync |
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