fix: do not pack workspaces by default

lib/index.js

@@ -149,16 +149,26 @@ class Walker extends IgnoreWalker {
       this.packageJsonCache = this.parent ? this.parent.packageJsonCache
         : (opt.packageJsonCache || new Map())
       let rules = defaultRules.join('\n') + '\n'
-      // if opt.path and opt.prefix are not the same directory, and opt.workspaces has opt.path
-      // in it, then we know that opt.path is a workspace directory. in order to not drop ignore
-      // rules from directories between the workspace root (opt.prefix) and the workspace itself
-      // (opt.path), we need to find and read those now
-      if (opt.prefix && opt.path !== opt.prefix &&
-        opt.workspaces && opt.workspaces.includes(opt.path)) {
-        // relpath is the relative path between the prefix and the parent of opt.path
-        // we use the parent because ignore-walk will read the files in opt.path already
-        const relpath = path.relative(opt.prefix, path.dirname(opt.path))
-        rules += readOutOfTreeIgnoreFiles(opt.prefix, relpath)
+
+      if (opt.prefix && opt.workspaces) {
+        const gPath = globify(opt.path)
+        const gPrefix = globify(opt.prefix)
+        const gWorkspaces = opt.workspaces.map((ws) => globify(ws))
+        // if opt.path and opt.prefix are not the same directory, and opt.workspaces has opt.path
+        // in it, then we know that opt.path is a workspace directory. in order to not drop ignore
+        // rules from directories between the workspace root (opt.prefix) and the workspace itself
+        // (opt.path), we need to find and read those now
+        /* istanbul ignore else */
+        if (gPath !== gPrefix && gWorkspaces.includes(gPath)) {
+          // relpath is the relative path between the prefix and the parent of opt.path
+          // we use the parent because ignore-walk will read the files in opt.path already
+          const relpath = path.relative(opt.prefix, path.dirname(opt.path))
+          rules += readOutOfTreeIgnoreFiles(opt.prefix, relpath)
+        } else if (gPath === gPrefix) {
+          // on the other hand, if the path and the prefix are the same, then we ignore workspaces
+          // so that we don't pack workspaces inside of a root project
+          rules += opt.workspaces.map((ws) => globify(path.relative(opt.path, ws))).join('\n')
+        }
       }
 
       super.onReadIgnoreFile(rootBuiltinRules, rules, _ => _)

test/workspace.js

@@ -10,10 +10,10 @@ t.test('respects workspace root ignore files', async (t) => {
     'package.json': JSON.stringify({
       name: 'workspace-root',
       version: '1.0.0',
-      main: 'index.js',
+      main: 'root.js',
       workspaces: ['./workspaces/foo'],
     }),
-    'index.js': `console.log('hello')`,
+    'root.js': `console.log('hello')`,
     '.gitignore': 'ignore-me',
     'ignore-me': 'should be ignored',
     workspaces: {
@@ -24,9 +24,9 @@ t.test('respects workspace root ignore files', async (t) => {
         'package.json': JSON.stringify({
           name: 'workspace-child',
           version: '1.0.0',
-          main: 'index.js',
+          main: 'child.js',
         }),
-        'index.js': `console.log('hello')`,
+        'child.js': `console.log('hello')`,
         'ignore-me': 'should be ignored',
         'ignore-me-also': 'should also be ignored',
       },
@@ -41,7 +41,71 @@ t.test('respects workspace root ignore files', async (t) => {
     workspaces: [workspacePath],
   })
   t.same(files, [
-    'index.js',
+    'child.js',
     'package.json',
   ])
+
+  // here we leave off workspaces to satisfy coverage
+  const secondFiles = await packlist({
+    path: workspacePath,
+    prefix: root,
+  })
+  t.same(secondFiles, [
+    'ignore-me',
+    'ignore-me-also',
+    'child.js',
+    'package.json',
+  ])
+})
+
+t.test('packing a workspace root does not include children', async (t) => {
+  const root = t.testdir({
+    'package.json': JSON.stringify({
+      name: 'workspace-root',
+      version: '1.0.0',
+      main: 'root.js',
+      workspaces: ['./workspaces/foo'],
+    }),
+    'root.js': `console.log('hello')`,
+    '.gitignore': 'ignore-me',
+    'ignore-me': 'should be ignored',
+    workspaces: {
+      '.gitignore': 'ignore-me-also',
+      'ignore-me': 'should be ignored',
+      'ignore-me-also': 'should also be ignored',
+      foo: {
+        'package.json': JSON.stringify({
+          name: 'workspace-child',
+          version: '1.0.0',
+          main: 'child.js',
+        }),
+        'child.js': `console.log('hello')`,
+        'ignore-me': 'should be ignored',
+        'ignore-me-also': 'should also be ignored',
+      },
+    },
+  })
+
+  const workspacePath = path.join(root, 'workspaces', 'foo')
+  // this simulates what it looks like when a user does i.e. npm pack from a workspace root
+  const files = await packlist({
+    path: root,
+    prefix: root,
+    workspaces: [workspacePath],
+  })
+  t.same(files, [
+    'root.js',
+    'package.json',
+  ])
+
+  const secondFiles = await packlist({
+    path: root,
+    prefix: root,
+  })
+  t.same(secondFiles, [
+    'workspaces/foo/child.js',
+    'root.js',
+    'package.json',
+    'workspaces/foo/package.json',
+  ])
 })