fix: don't crash if completion function fails

packages/pnpm/src/cmd/complete.ts

@@ -52,7 +52,11 @@ export default async function complete (
     if (!input.cmd || input.currentTypedWordType === 'value' && !ctx.completionByCommandName[input.cmd]) {
       completions = ctx.initialCompletion()
     } else if (ctx.completionByCommandName[input.cmd]) {
-      completions = await ctx.completionByCommandName[input.cmd](input.args, input.options)
+      try {
+        completions = await ctx.completionByCommandName[input.cmd](input.args, input.options)
+      } catch (err) {
+        // Ignore
+      }
     }
   }
   if (input.currentTypedWordType === 'value') {

packages/pnpm/test/complete.test.ts

@@ -91,6 +91,32 @@ test('complete a command', async (t) => {
   t.end()
 })
 
+test('if command completion fails, return empty array', async (t) => {
+  t.deepEqual(
+    await complete(
+      {
+        cliOptionsTypesByCommandName: {},
+        completionByCommandName: {
+          run: async () => { throw new Error('error') },
+        },
+        globalOptionTypes: {
+          filter: String,
+        },
+        initialCompletion: () => [],
+      },
+      {
+        args: [],
+        cmd: 'run',
+        currentTypedWordType: 'value',
+        lastOption: null,
+        options: {},
+      },
+    ),
+    [],
+  )
+  t.end()
+})
+
 test('initial completion', async (t) => {
   const ctx = {
     cliOptionsTypesByCommandName: {},