Fix security alerts

[dirtyhenry]

This PR aims to fix the security alert of the project about ESLint.

There are still some errors left though.

  25:12  error    'zealit' was used before it was defined  no-use-before-define
  62:11  error    'zealit' was used before it was defined  no-use-before-define
  86:24  error    Do not nest ternary expressions          no-nested-ternary
  97:38  warning  Unexpected unnamed function              func-names

✖ 4 problems (3 errors, 1 warning)