I want to apply the regular expression used in gitleaks in secretlint

I am now trying to migrate from gitleaks to a tool called secretlint.

Originally, there was a warning in the generic-api-key rule when executing gitleaks, but after moving to secretlint, the warning no longer occurs.

Specifically, I wrote the regular expression of gitleaks.toml provided by gitleaks in the secretlint configuration file .secretlintrc.json according to the format of @secretlint-rule-pattern provided by secretlint.

[[rules]]
id = "generic-api-key"
description = "Generic API Key"
regex = '''(?i)((key|api[^Version]|token|secret|password|auth)[a-z0-9_ .\-,]{0,25})(=|>|:=|\|\|:|<=|=>|:).{0,5}['\"]([0-9a-zA-Z\-_=]{8,64})['\"]'''
entropy = 3.7
secretGroup = 4
keywords = [
    "key",
    "api",
    "token",
    "secret",
    "password",
    "auth",
]

to

{
  "rules": [
    {
      "id": "@secretlint/secretlint-rule-pattern",
      "options": {
        "patterns": [
          {
            "name": "Generic API key",
            "pattern": "/(?i)((key|api[^Version]|token|secret|password|auth)[a-z0-9_ .\\-,]{0,25})(=|>|:=|\\|\\|:|<=|=>|:).{0,5}['\"]([0-9a-zA-Z\\-_=]{8,64})['\"]/"
          }
        ]
      }
    }
  ]
}

I'm thinking that perhaps I'm not migrating the regex correctly, but if anyone can tell me where I'm going wrong, I'd like to know.

The main issue is the the inline (?i) modifier is not supported by the JavaScript regex engine. You must use the normal i flag after the second regex delimiter (/.../i).

Also, the api[^Version] is a typical user error. If you meant to say api not followed with Version, you need api(?!Version).

So you can use

"pattern": "/((key|api(?!Version)|token|secret|password|auth)[\\w .,-]{0,25})([=>:]|:=|\\|\\|:|<=|=>).{0,5}['\"]([\\w=-]{8,64})['\"]/i"

Note that I "shrunk" [A-Za-z0-9_] into a single \w, they are equivalent here. Note the - char does not need escaping when used at the end (or start) of a character class.