fix: Add check to pkg command to deal with empty values (#6902)

Author: NeonArray

lib/utils/queryable.js

@@ -111,13 +111,9 @@ const getter = ({ data, key }) => {
       }, {})
       return _data
     } else {
-      // if can't find any more values, it means it's just over
-      // and there's nothing to return
-      if (!_data[k]) {
+      if (!Object.hasOwn(_data, k)) {
         return undefined
       }
-
-      // otherwise sets the next value
       _data = _data[k]
     }
 

tap-snapshots/test/lib/commands/view.js.test.cjs

@@ -315,6 +315,10 @@ maintainers[0].name = 'claudia'
 maintainers[1].name = 'isaacs'
 `
 
+exports[`test/lib/commands/view.js TAP specific field names fields with empty values > must match snapshot 1`] = `
+
+`
+
 exports[`test/lib/commands/view.js TAP specific field names maintainers with email > must match snapshot 1`] = `
 maintainers = [
   { name: 'claudia', email: '[email protected]', twitter: 'cyellow' },

test/lib/commands/pkg.js

@@ -83,6 +83,50 @@ t.test('get single arg', async t => {
   )
 })
 
+t.test('get multiple arg', async t => {
+  const { pkg, OUTPUT } = await mockNpm(t, {
+    prefixDir: {
+      'package.json': JSON.stringify({
+        name: 'foo',
+        version: '1.1.1',
+      }),
+    },
+  })
+
+  await pkg('get', 'name', 'version')
+
+  t.strictSame(
+    JSON.parse(OUTPUT()),
+    {
+      name: 'foo',
+      version: '1.1.1',
+    },
+    'should print retrieved package.json field'
+  )
+})
+
+t.test('get multiple arg with empty value', async t => {
+  const { pkg, OUTPUT } = await mockNpm(t, {
+    prefixDir: {
+      'package.json': JSON.stringify({
+        name: 'foo',
+        author: '',
+      }),
+    },
+  })
+
+  await pkg('get', 'name', 'author')
+
+  t.strictSame(
+    JSON.parse(OUTPUT()),
+    {
+      name: 'foo',
+      author: '',
+    },
+    'should print retrieved package.json field regardless of empty value'
+  )
+})
+
 t.test('get nested arg', async t => {
   const { pkg, OUTPUT } = await mockNpm(t, {
     prefixDir: {

test/lib/commands/view.js

@@ -101,6 +101,7 @@ const packument = (nv, opts) => {
         email: '[email protected]',
         twitter: 'foo',
       },
+      empty: '',
       readme: 'a very useful readme',
       versions: {
         '1.0.0': {
@@ -425,6 +426,11 @@ t.test('specific field names', async t => {
     await view.exec(['[email protected]', 'maintainers.name'])
     t.matchSnapshot(outputs.join('\n'))
   })
+
+  t.test('fields with empty values', async t => {
+    await view.exec(['yellow', 'empty'])
+    t.matchSnapshot(outputs.join('\n'))
+  })
 })
 
 t.test('throw error if global mode', async t => {