fix: restore '--json' argument to 'npm pack' command

PR-URL: #3217
Credit: @mrmlnc
Close: #3217
Reviewed-by: @isaacs, @wraithgar, @ruyadorno

Author: mrmlnc

docs/content/commands/npm-pack.md

@@ -7,7 +7,7 @@ description: Create a tarball from a package
 ### Synopsis
 
 ```bash
-npm pack [[<@scope>/]<pkg>...] [--dry-run]
+npm pack [[<@scope>/]<pkg>...] [--dry-run] [--json]
 ```
 
 ### Configuration

lib/pack.js

@@ -24,7 +24,7 @@ class Pack extends BaseCommand {
 
   /* istanbul ignore next - see test/lib/load-all-commands.js */
   static get params () {
-    return ['dry-run', 'workspace', 'workspaces']
+    return ['dry-run', 'json', 'workspace', 'workspaces']
   }
 
   /* istanbul ignore next - see test/lib/load-all-commands.js */
@@ -46,6 +46,7 @@ class Pack extends BaseCommand {
 
     const unicode = this.npm.config.get('unicode')
     const dryRun = this.npm.config.get('dry-run')
+    const json = this.npm.config.get('json')
 
     // Get the manifests and filenames first so we can bail early on manifest
     // errors before making any tarballs
@@ -74,6 +75,11 @@ class Pack extends BaseCommand {
       tarballs.push(pkgContents)
     }
 
+    if (json) {
+      this.npm.output(JSON.stringify(tarballs, null, 2))
+      return
+    }
+
     for (const tar of tarballs) {
       logTar(tar, { log, unicode })
       this.npm.output(tar.filename.replace(/^@/, '').replace(/\//, '-'))

tap-snapshots/test/lib/load-all-commands.js.test.cjs

@@ -653,7 +653,7 @@ Usage:
 npm pack [[<@scope>/]<pkg>...]
 
 Options:
-[--dry-run]
+[--dry-run] [--json]
 [-w|--workspace <workspace-name> [-w|--workspace <workspace-name> ...]]
 [-ws|--workspaces]
 

tap-snapshots/test/lib/utils/npm-usage.js.test.cjs

@@ -740,7 +740,7 @@ All commands:
                     npm pack [[<@scope>/]<pkg>...]
                     
                     Options:
-                    [--dry-run]
+                    [--dry-run] [--json]
                     [-w|--workspace <workspace-name> [-w|--workspace <workspace-name> ...]]
                     [-ws|--workspaces]
                     

test/lib/pack.js

@@ -73,7 +73,7 @@ t.test('should pack given directory', (t) => {
   const npm = mockNpm({
     config: {
       unicode: true,
-      json: true,
+      json: false,
       'dry-run': true,
     },
     output,
@@ -108,7 +108,7 @@ t.test('should pack given directory for scoped package', (t) => {
   const npm = mockNpm({
     config: {
       unicode: true,
-      json: true,
+      json: false,
       'dry-run': true,
     },
     output,
@@ -158,6 +158,93 @@ t.test('should log pack contents', (t) => {
   })
 })
 
+t.test('should log output as valid json', (t) => {
+  const testDir = t.testdir({
+    'package.json': JSON.stringify({
+      name: 'my-cool-pkg',
+      version: '1.0.0',
+      main: './index.js',
+    }, null, 2),
+    'README.md': 'text',
+    'index.js': 'void',
+  })
+
+  const Pack = t.mock('../../lib/pack.js', {
+    libnpmpack,
+    '../../lib/utils/tar.js': {
+      getContents: async () => ({
+        id: '@ruyadorno/[email protected]',
+        name: '@ruyadorno/redact',
+        version: '1.0.0',
+        size: 2450,
+        unpackedSize: 4911,
+        shasum: '044c7574639b923076069d6e801e2d1866430f17',
+        // mocks exactly how ssri Integrity works:
+        integrity: {
+          sha512: [
+            {
+              source: 'sha512-JSdyskeR2qonBUaQ4vdlU/vQGSfgCxSq5O+vH+d2yVWRqzso4O3gUzd6QX/V7OWV//zU7kA5o63Zf433jUnOtQ==',
+              digest: 'JSdyskeR2qonBUaQ4vdlU/vQGSfgCxSq5O+vH+d2yVWRqzso4O3gUzd6QX/V7OWV//zU7kA5o63Zf433jUnOtQ==',
+              algorithm: 'sha512',
+              options: [],
+            },
+          ],
+          toJSON () {
+            return 'sha512-JSdyskeR2qonBUaQ4vdlU/vQGSfgCxSq5O+vH+d2yVWRqzso4O3gUzd6QX/V7OWV//zU7kA5o63Zf433jUnOtQ=='
+          },
+        },
+        filename: '@ruyadorno/redact-1.0.0.tgz',
+        files: [
+          { path: 'LICENSE', size: 1113, mode: 420 },
+          { path: 'README.md', size: 2639, mode: 420 },
+          { path: 'index.js', size: 719, mode: 493 },
+          { path: 'package.json', size: 440, mode: 420 },
+        ],
+        entryCount: 4,
+        bundled: [],
+      }),
+    },
+    npmlog: {
+      notice: () => {},
+      showProgress: () => {},
+      clearProgress: () => {},
+    },
+  })
+  const npm = mockNpm({
+    config: {
+      unicode: true,
+      json: true,
+      'dry-run': true,
+    },
+    output,
+  })
+  const pack = new Pack(npm)
+
+  pack.exec([testDir], err => {
+    t.error(err, { bail: true })
+
+    t.match(JSON.parse(OUTPUT), [{
+      id: '@ruyadorno/[email protected]',
+      name: '@ruyadorno/redact',
+      version: '1.0.0',
+      size: 2450,
+      unpackedSize: 4911,
+      shasum: '044c7574639b923076069d6e801e2d1866430f17',
+      integrity: 'sha512-JSdyskeR2qonBUaQ4vdlU/vQGSfgCxSq5O+vH+d2yVWRqzso4O3gUzd6QX/V7OWV//zU7kA5o63Zf433jUnOtQ==',
+      filename: '@ruyadorno/redact-1.0.0.tgz',
+      files: [
+        { path: 'LICENSE' },
+        { path: 'README.md' },
+        { path: 'index.js' },
+        { path: 'package.json' },
+      ],
+      entryCount: 4,
+    }], 'pack details output as valid json')
+
+    t.end()
+  })
+})
+
 t.test('invalid packument', (t) => {
   const mockPacote = {
     manifest: () => {
@@ -176,7 +263,7 @@ t.test('invalid packument', (t) => {
   const npm = mockNpm({
     config: {
       unicode: true,
-      json: true,
+      json: false,
       'dry-run': true,
     },
     output,