tslint-playground

This is a repo where I play around with TSLint custom rules. The rules are in the tslint directory. Here's the list so far:

• `noBadWordsRule.ts uses the bad-words NPM module to forbid bad words in comments. Also provides options for custom list of bad words.
• deMorgansRule.ts uses the TypeScript AST to "optimize" files by removing unnecessary exclamation marks through DeMorgan's Law. Please don't use it for real, it was for learning.

Useful resources

• Custom rules docs: https://palantir.github.io/tslint/develop/custom-rules/
• Your linter can work with Abstract Syntax Trees (AST), which is a computer-readable representation of the file your linter is targetting.
• RuleWalker subclasses can be used to "walk" along the AST using something called the Visitor Pattern. It's a complicated pattern but you can think of it as a depth-first search of the AST with callbacks for each tree node.
• Explore the TypeScript AST.
• All the AST hooks.
• Using the TypeScript compiler API.
• TSLint core rules and accompanying source code.

How do I work on this?

git clone https://github.com/ashfurrow/tslint-playground.git
cd tslint-playground
yarn install

Okay so src/index.ts has offenses in it, you can fix them with the rules using yarn lint --fix src/index.ts (prefix that with a git checkout src/index.ts for a fast reset-debug cycle).