ReferenceError: describe is not defined ( Node js + mocha unit testing + vs code IDE)

[Nikhil Kadam]

Anyone aware about the issue? Facing below issue while debugging a test script in vs code:

C:\Program Files\nodejs\node.exe --inspect-brk=44646 node_modules\mocha\bin\_mocha -u tdd --timeout 999999 --colors D:\abc/test
Debugger listening on ws://127.0.0.1:44646/f80659cd-d2bb-4241-876e-96721b69e539
For help, see: https://nodejs.org/en/docs/inspector
Debugger attached.

ReferenceError: describe is not defined
    at Object.<anonymous> (D:\Monetate\abc\test\actionBuilderPageTest.js:10:1)
    at Module._compile (internal/modules/cjs/loader.js:955:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:991:10)
    at Module.load (internal/modules/cjs/loader.js:811:32)
    at Function.Module._load (internal/modules/cjs/loader.js:723:14)
    at Module.require (internal/modules/cjs/loader.js:848:19)
    at require (internal/modules/cjs/helpers.js:74:18)