fix crash when NODE_OPTIONS includes --inspect-port (vercel#12555)

packages/next/server/lib/utils.ts

@@ -10,6 +10,6 @@ export function printAndExit(message: string, code = 1) {
 }
 
 export function getNodeOptionsWithoutInspect() {
-  const NODE_INSPECT_RE = /--inspect(-brk)?(=\S+)? ?/
+  const NODE_INSPECT_RE = /--inspect(-brk)?(=\S+)?( |$)/
   return (process.env.NODE_OPTIONS || '').replace(NODE_INSPECT_RE, '')
 }

test/unit/get-node-options-without-inspect.test.js

@@ -0,0 +1,53 @@
+/* eslint-env jest */
+import { getNodeOptionsWithoutInspect } from 'next/dist/server/lib/utils'
+
+const originalNodeOptions = process.env.NODE_OPTIONS
+
+afterAll(() => {
+  process.env.NODE_OPTIONS = originalNodeOptions
+})
+
+describe('getNodeOptionsWithoutInspect', () => {
+  it('removes --inspect option', () => {
+    process.env.NODE_OPTIONS = '--other --inspect --additional'
+    const result = getNodeOptionsWithoutInspect()
+
+    expect(result).toBe('--other --additional')
+  })
+
+  it('removes --inspect option at end of line', () => {
+    process.env.NODE_OPTIONS = '--other --inspect'
+    const result = getNodeOptionsWithoutInspect()
+
+    expect(result).toBe('--other ')
+  })
+
+  it('removes --inspect option with parameters', () => {
+    process.env.NODE_OPTIONS = '--other --inspect=0.0.0.0:1234 --additional'
+    const result = getNodeOptionsWithoutInspect()
+
+    expect(result).toBe('--other --additional')
+  })
+
+  it('removes --inspect-brk option', () => {
+    process.env.NODE_OPTIONS = '--other --inspect-brk --additional'
+    const result = getNodeOptionsWithoutInspect()
+
+    expect(result).toBe('--other --additional')
+  })
+
+  it('removes --inspect-brk option with parameters', () => {
+    process.env.NODE_OPTIONS = '--other --inspect-brk=0.0.0.0:1234 --additional'
+    const result = getNodeOptionsWithoutInspect()
+
+    expect(result).toBe('--other --additional')
+  })
+
+  it('ignores unrelated options starting with --inspect-', () => {
+    process.env.NODE_OPTIONS =
+      '--other --inspect-port=0.0.0.0:1234 --additional'
+    const result = getNodeOptionsWithoutInspect()
+
+    expect(result).toBe('--other --inspect-port=0.0.0.0:1234 --additional')
+  })
+})