1 files changed, 32 insertions, 0 deletions
diff --git a/lib/npm.js b/lib/npm.js
index 763c9b7a3..9fbda9073 100644
--- a/lib/npm.js
+++ b/lib/npm.js
@@ -40,6 +40,7 @@ class Npm extends EventEmitter {
   #argvClean = []
   #chalk = null
 
+  #outputBuffer = []
   #logFile = new LogFile()
   #display = new Display()
   #timers = new Timers({
@@ -466,6 +467,37 @@ class Npm extends EventEmitter {
     log.showProgress()
   }
 
+  outputBuffer (item) {
+    this.#outputBuffer.push(item)
+  }
+
+  flushOutput (jsonError) {
+    if (!jsonError && !this.#outputBuffer.length) {
+      return
+    }
+
+    if (this.config.get('json')) {
+      const jsonOutput = this.#outputBuffer.reduce((acc, item) => {
+        if (typeof item === 'string') {
+          // try to parse it as json in case its a string
+          try {
+            item = JSON.parse(item)
+          } catch {
+            return acc
+          }
+        }
+        return { ...acc, ...item }
+      }, {})
+      this.output(JSON.stringify({ ...jsonOutput, ...jsonError }, null, 2))
+    } else {
+      for (const item of this.#outputBuffer) {
+        this.output(item)
+      }
+    }
+
+    this.#outputBuffer.length = 0
+  }
+
   outputError (...msg) {
     log.clearProgress()
     // eslint-disable-next-line no-console