fix(arborist): fix unescaped periods

[XhmikosR]

References

Spotted on https://lgtm.com/projects/g/npm/cli/alerts/?mode=list. If you are not using CodeQL already, I suggest that you set it up :)

[ljharb]

Not sure why codeql would be needed; this is an eslint core rule (that should certainly be enabled)

[XhmikosR]

Whatever does the job, ofc. It's just that CodeQL has checks for things ESLint doesn't.

[wraithgar]

We are setting codeql up on our repos, we have not done it for the cli yet but it's on the roadmap.

[lukekarrys]

Not sure why codeql would be needed; this is an eslint core rule (that should certainly be enabled)

@ljharb what's the eslint rule for this?

[ljharb]

@lukekarrys ah, looking into it, this specific case isn't covered; i usually have all of https://eslint.org/docs/rules/no-control-regex, https://eslint.org/docs/rules/no-div-regex, https://eslint.org/docs/rules/no-regex-spaces, https://eslint.org/docs/rules/no-invalid-regexp, and https://eslint.org/docs/rules/prefer-regex-literals enabled tho.