firebase-tools: emulator throwing error MODULE_NOT_FOUND with --inspect-functions

[REQUIRED] Environment info

firebase-tools: 8.4.3

Platform: mac os catalina 10.15.5 node -v v12.18.1

visual studio code Version: 1.46.1

[REQUIRED] Test case

1. created new project with 1 firebase function “hello_word”

2. when I have run “firebase emulators:start --only firestore,functions” al works perfect

3. when I run “firebase emulators:start --only firestore,functions --inspect-functions” I’ve got error:

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functions: Watching “/Users/username/Documents/Firebase/myproject/purchases/functions” for Cloud Functions…

internal/modules/cjs/loader.js:983 throw err; ^

Error: Cannot find module ‘/Users/username/Documents/Firebase/myproject/purchases/functions/–inspect=localhost:9229’ at Function.Module._resolveFilename (internal/modules/cjs/loader.js:980:15) at Function.Module._resolveFilename (pkg/prelude/bootstrap.js:1346:46) at Function.Module._load (internal/modules/cjs/loader.js:862:27) at Function.Module.runMain (pkg/prelude/bootstrap.js:1375:12) at internal/main/run_main_module.js:18:47 { code: ‘MODULE_NOT_FOUND’, requireStack: [] }

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[REQUIRED] Steps to reproduce

run “firebase emulators:start --only firestore,functions --inspect-functions”

firebase-debug-without-inspect.log

firebase-debug-with-inspect.log