diff --git a/lib/commands/edit.js b/lib/commands/edit.js
index b2c2ec8d2a39a..1140c59efa3e4 100644
--- a/lib/commands/edit.js
+++ b/lib/commands/edit.js
@@ -33,8 +33,6 @@ class Edit extends BaseCommand {
   static params = ['editor']
   static ignoreImplicitWorkspace = false
 
-  // TODO
-  /* istanbul ignore next */
   static async completion (opts, npm) {
     return completion(npm, opts)
   }
diff --git a/lib/commands/explain.js b/lib/commands/explain.js
index 5f37ba9925f41..3b843e3bbff6c 100644
--- a/lib/commands/explain.js
+++ b/lib/commands/explain.js
@@ -17,8 +17,6 @@ class Explain extends ArboristWorkspaceCmd {
 
   static ignoreImplicitWorkspace = false
 
-  // TODO
-  /* istanbul ignore next */
   static async completion (opts, npm) {
     const completion = require('../utils/installed-deep.js')
     return completion(npm, opts)
diff --git a/lib/commands/explore.js b/lib/commands/explore.js
index 184af2bdc5a16..d0d2e5c3ef891 100644
--- a/lib/commands/explore.js
+++ b/lib/commands/explore.js
@@ -14,8 +14,6 @@ class Explore extends BaseCommand {
   static params = ['shell']
   static ignoreImplicitWorkspace = false
 
-  // TODO
-  /* istanbul ignore next */
   static async completion (opts, npm) {
     return completion(npm, opts)
   }
diff --git a/lib/commands/fund.js b/lib/commands/fund.js
index 8c194dac80b49..a281912d77b32 100644
--- a/lib/commands/fund.js
+++ b/lib/commands/fund.js
@@ -34,8 +34,6 @@ class Fund extends ArboristWorkspaceCmd {
     return `${msg}\``
   }
 
-  // TODO
-  /* istanbul ignore next */
   static async completion (opts, npm) {
     const completion = require('../utils/installed-deep.js')
     return completion(npm, opts)
diff --git a/lib/commands/get.js b/lib/commands/get.js
index 4191f2c973e7d..e111d7f2f54c8 100644
--- a/lib/commands/get.js
+++ b/lib/commands/get.js
@@ -8,8 +8,6 @@ class Get extends BaseCommand {
   static params = ['long']
   static ignoreImplicitWorkspace = false
 
-  // TODO
-  /* istanbul ignore next */
   static async completion (opts) {
     const Config = Npm.cmd('config')
     return Config.completion(opts)
diff --git a/lib/commands/ls.js b/lib/commands/ls.js
index bc8beb007e809..0ea8704a50573 100644
--- a/lib/commands/ls.js
+++ b/lib/commands/ls.js
@@ -39,8 +39,6 @@ class LS extends ArboristWorkspaceCmd {
     ...super.params,
   ]
 
-  // TODO
-  /* istanbul ignore next */
   static async completion (opts, npm) {
     const completion = require('../utils/installed-deep.js')
     return completion(npm, opts)
diff --git a/lib/commands/rebuild.js b/lib/commands/rebuild.js
index 1c19836106e06..a23df39f1560b 100644
--- a/lib/commands/rebuild.js
+++ b/lib/commands/rebuild.js
@@ -17,8 +17,6 @@ class Rebuild extends ArboristWorkspaceCmd {
 
   static usage = ['[<package-spec>] ...]']
 
-  // TODO
-  /* istanbul ignore next */
   static async completion (opts, npm) {
     const completion = require('../utils/installed-deep.js')
     return completion(npm, opts)
diff --git a/lib/commands/set.js b/lib/commands/set.js
index 2e61762ba9dcd..9a90e2a50ea1e 100644
--- a/lib/commands/set.js
+++ b/lib/commands/set.js
@@ -8,8 +8,6 @@ class Set extends BaseCommand {
   static params = ['global', 'location']
   static ignoreImplicitWorkspace = false
 
-  // TODO
-  /* istanbul ignore next */
   static async completion (opts) {
     const Config = Npm.cmd('config')
     return Config.completion(opts)
diff --git a/lib/commands/uninstall.js b/lib/commands/uninstall.js
index f9baebe3bc2e2..a369158d99c52 100644
--- a/lib/commands/uninstall.js
+++ b/lib/commands/uninstall.js
@@ -11,8 +11,6 @@ class Uninstall extends ArboristWorkspaceCmd {
   static usage = ['[<@scope>/]<pkg>...']
   static ignoreImplicitWorkspace = false
 
-  // TODO
-  /* istanbul ignore next */
   static async completion (opts, npm) {
     return completion(npm, opts)
   }
diff --git a/lib/commands/update.js b/lib/commands/update.js
index 0d2fc324d9245..38e83f3f6bb95 100644
--- a/lib/commands/update.js
+++ b/lib/commands/update.js
@@ -29,8 +29,6 @@ class Update extends ArboristWorkspaceCmd {
 
   static usage = ['[<pkg>...]']
 
-  // TODO
-  /* istanbul ignore next */
   static async completion (opts, npm) {
     const completion = require('../utils/installed-deep.js')
     return completion(npm, opts)
diff --git a/test/lib/commands/edit.js b/test/lib/commands/edit.js
index ae6826f7f98ad..b55bb2df218ba 100644
--- a/test/lib/commands/edit.js
+++ b/test/lib/commands/edit.js
@@ -3,6 +3,20 @@ const path = require('node:path')
 const tspawk = require('../../fixtures/tspawk')
 const { load: loadMockNpm } = require('../../fixtures/mock-npm')
 
+t.test('completion', async t => {
+  const { edit } = await loadMockNpm(t, {
+    command: 'edit',
+    prefixDir: {
+      node_modules: {
+        foo: {},
+        bar: {},
+      },
+    },
+  })
+  const res = await edit.completion({ conf: { argv: { remain: ['npm', 'edit'] } } })
+  t.match(res, ['bar', 'foo'])
+})
+
 const spawk = tspawk(t)
 
 const npmConfig = {
diff --git a/test/lib/commands/explain.js b/test/lib/commands/explain.js
index b55371c8b7e5c..d702019e9202a 100644
--- a/test/lib/commands/explain.js
+++ b/test/lib/commands/explain.js
@@ -2,6 +2,22 @@ const t = require('tap')
 const { resolve } = require('node:path')
 const mockNpm = require('../../fixtures/mock-npm.js')
 
+t.test('completion', async t => {
+  const { explain } = await mockNpm(t, {
+    command: 'explain',
+    prefixDir: {
+      node_modules: {
+        foo: {
+          'package.json': JSON.stringify({ name: 'foo', version: '1.0.0' }),
+        },
+      },
+      'package.json': JSON.stringify({ name: 'project', version: '1.0.0' }),
+    },
+  })
+  const res = await explain.completion({ conf: { argv: { remain: ['npm', 'explain'] } } })
+  t.type(res, Array)
+})
+
 const mockExplain = async (t, opts) => {
   const mock = await mockNpm(t, {
     command: 'explain',
diff --git a/test/lib/commands/explore.js b/test/lib/commands/explore.js
index 6988dca90fbfb..b40de9817bff6 100644
--- a/test/lib/commands/explore.js
+++ b/test/lib/commands/explore.js
@@ -2,6 +2,20 @@ const t = require('tap')
 const mockNpm = require('../../fixtures/mock-npm')
 const { cleanCwd } = require('../../fixtures/clean-snapshot')
 
+t.test('completion', async t => {
+  const { explore } = await mockNpm(t, {
+    command: 'explore',
+    prefixDir: {
+      node_modules: {
+        foo: {},
+        bar: {},
+      },
+    },
+  })
+  const res = await explore.completion({ conf: { argv: { remain: ['npm', 'explore'] } } })
+  t.match(res, ['bar', 'foo'])
+})
+
 const mockExplore = async (t, exec, {
   PJ_ERROR = null,
   RUN_SCRIPT_ERROR = null,
diff --git a/test/lib/commands/fund.js b/test/lib/commands/fund.js
index 277190e7a1a48..95521fb6da650 100644
--- a/test/lib/commands/fund.js
+++ b/test/lib/commands/fund.js
@@ -1,6 +1,22 @@
 const t = require('tap')
 const mockNpm = require('../../fixtures/mock-npm')
 
+t.test('completion', async t => {
+  const { fund } = await mockNpm(t, {
+    command: 'fund',
+    prefixDir: {
+      node_modules: {
+        foo: {
+          'package.json': JSON.stringify({ name: 'foo', version: '1.0.0' }),
+        },
+      },
+      'package.json': JSON.stringify({ name: 'project', version: '1.0.0' }),
+    },
+  })
+  const res = await fund.completion({ conf: { argv: { remain: ['npm', 'fund'] } } })
+  t.type(res, Array)
+})
+
 const version = '1.0.0'
 
 const funding = {
diff --git a/test/lib/commands/get.js b/test/lib/commands/get.js
index dec634f835172..6a1db69628217 100644
--- a/test/lib/commands/get.js
+++ b/test/lib/commands/get.js
@@ -1,6 +1,12 @@
 const t = require('tap')
 const { load: loadMockNpm } = require('../../fixtures/mock-npm')
 
+t.test('completion', async t => {
+  const { get } = await loadMockNpm(t, { command: 'get' })
+  const res = await get.completion({ conf: { argv: { remain: ['npm', 'get'] } } })
+  t.type(res, Array)
+})
+
 t.test('should retrieve values from config', async t => {
   const name = 'editor'
   const value = 'vigor'
diff --git a/test/lib/commands/ls.js b/test/lib/commands/ls.js
index c876af9e83ddf..1de85b8cfd095 100644
--- a/test/lib/commands/ls.js
+++ b/test/lib/commands/ls.js
@@ -5285,3 +5285,19 @@ t.test('ls --package-lock-only', async t => {
     })
   })
 })
+
+t.test('completion', async t => {
+  const { ls } = await mockNpm(t, {
+    command: 'ls',
+    prefixDir: {
+      node_modules: {
+        foo: {
+          'package.json': JSON.stringify({ name: 'foo', version: '1.0.0' }),
+        },
+      },
+      'package.json': JSON.stringify({ name: 'project', version: '1.0.0' }),
+    },
+  })
+  const res = await ls.completion({ conf: { argv: { remain: ['npm', 'ls'] } } })
+  t.type(res, Array)
+})
diff --git a/test/lib/commands/rebuild.js b/test/lib/commands/rebuild.js
index aa5578460b90f..0062362b61329 100644
--- a/test/lib/commands/rebuild.js
+++ b/test/lib/commands/rebuild.js
@@ -205,3 +205,19 @@ t.test('global prefix', async t => {
     'should output success msg'
   )
 })
+
+t.test('completion', async t => {
+  const { rebuild } = await setupMockNpm(t, {
+    command: 'rebuild',
+    prefixDir: {
+      node_modules: {
+        foo: {
+          'package.json': JSON.stringify({ name: 'foo', version: '1.0.0' }),
+        },
+      },
+      'package.json': JSON.stringify({ name: 'project', version: '1.0.0' }),
+    },
+  })
+  const res = await rebuild.completion({ conf: { argv: { remain: ['npm', 'rebuild'] } } })
+  t.type(res, Array)
+})
diff --git a/test/lib/commands/set.js b/test/lib/commands/set.js
index a4a2a7349ef1a..8574b80345e5c 100644
--- a/test/lib/commands/set.js
+++ b/test/lib/commands/set.js
@@ -4,6 +4,12 @@ const mockNpm = require('../../fixtures/mock-npm')
 const { join } = require('node:path')
 const { cleanNewlines } = require('../../fixtures/clean-snapshot')
 
+t.test('completion', async t => {
+  const { set } = await mockNpm(t, { command: 'set' })
+  const res = await set.completion({ conf: { argv: { remain: ['npm', 'set'] } } })
+  t.type(res, Array)
+})
+
 t.test('no args', async t => {
   const { npm } = await mockNpm(t)
   t.rejects(npm.exec('set', []), /Usage:/, 'prints usage')
diff --git a/test/lib/commands/uninstall.js b/test/lib/commands/uninstall.js
index a1ef1745d0f55..2ede1c4c1a72a 100644
--- a/test/lib/commands/uninstall.js
+++ b/test/lib/commands/uninstall.js
@@ -200,3 +200,17 @@ t.test('non ENOENT error reading from localPrefix package.json', async t => {
     'should throw non ENOENT error'
   )
 })
+
+t.test('completion', async t => {
+  const { uninstall } = await _mockNpm(t, {
+    command: 'uninstall',
+    prefixDir: {
+      node_modules: {
+        foo: {},
+        bar: {},
+      },
+    },
+  })
+  const res = await uninstall.completion({ conf: { argv: { remain: ['npm', 'uninstall'] } } })
+  t.match(res, ['bar', 'foo'])
+})
diff --git a/test/lib/commands/update.js b/test/lib/commands/update.js
index e84e2c3142141..a8c68bd65bb36 100644
--- a/test/lib/commands/update.js
+++ b/test/lib/commands/update.js
@@ -79,3 +79,19 @@ t.test('update --global', async t => {
   t.match(ctor.path, globalPrefix)
   t.ok(ctor.path.startsWith(globalPrefix))
 })
+
+t.test('completion', async t => {
+  const { update } = await _mockNpm(t, {
+    command: 'update',
+    prefixDir: {
+      node_modules: {
+        foo: {
+          'package.json': JSON.stringify({ name: 'foo', version: '1.0.0' }),
+        },
+      },
+      'package.json': JSON.stringify({ name: 'project', version: '1.0.0' }),
+    },
+  })
+  const res = await update.completion({ conf: { argv: { remain: ['npm', 'update'] } } })
+  t.type(res, Array)
+})