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Optimize regex literals

You'll first need to installESLint:

npm i eslint --save-dev

Next, installeslint-plugin-optimize-regex:

npm install eslint-plugin-optimize-regex --save-dev

Note: If you installed ESLint globally (using the-g flag) then you must also installeslint-plugin-optimize-regex globally.

Addoptimize-regex to the plugins section of your.eslintrc configuration file. You can omit theeslint-plugin- prefix:

{"plugins": ["optimize-regex"    ]}

Then configure the rules you want to use under the rules section.

{"rules": {"optimize-regex/optimize-regex":"warn"    }}

If you wish to add awhitelist orblacklist array againstregexp-tree'stransforms, you can add them on an objects object:

{"rules": {"optimize-regex/optimize-regex": ["warn", {"blacklist": ["charClassClassrangesMerge"]        }]    }}

If you want the latter particular settings, you can avoid settingplugins andrules and just use:

{"extends": ["optimize-regex/recommended"]}

Or without the blacklist:

{"extends": ["optimize-regex/all"]}

• optimize-regex

• regexp-tree

MIT © Ezinwa Okpoechi