todo_linter.js

const todoRegex = /^\s*todo /i;
const taggedTodoRegex = /^\s*todo [-a-z0-9_]+ \d{4}-\d{2}-\d{2} /i;

module.exports = {
  meta: {
    type: "problem",
    docs: {
      description:
        "Disallow TODO comments unless they follow the format '// TODO github_username YYYY-MM-DD'",
      category: "Best Practices",
      recommended: false,
    },
    schema: [],
    messages: {
      invalidTodo:
        "TODO comments must be in the format '// TODO github_username YYYY-MM-DD'.",
    },
  },
  create(context) {
    return {
      Program() {
        const sourceCode = context.getSourceCode();
        const comments = sourceCode.getAllComments();

        for (const comment of comments) {
          const commentValue = comment.value;
          if (!todoRegex.test(commentValue)) continue;
          if (taggedTodoRegex.test(commentValue)) continue;
          context.report({
            loc: comment.loc,
            messageId: "invalidTodo",
          });
        }
      },
    };
  },
};