159 lines
5.5 KiB
JavaScript
159 lines
5.5 KiB
JavaScript
/**
|
|
* @fileoverview Rule that warns about used warning comments
|
|
* @author Alexander Schmidt <https://github.com/lxanders>
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const astUtils = require("../util/ast-utils");
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Rule Definition
|
|
//------------------------------------------------------------------------------
|
|
|
|
module.exports = {
|
|
meta: {
|
|
type: "suggestion",
|
|
|
|
docs: {
|
|
description: "disallow specified warning terms in comments",
|
|
category: "Best Practices",
|
|
recommended: false,
|
|
url: "https://eslint.org/docs/rules/no-warning-comments"
|
|
},
|
|
|
|
schema: [
|
|
{
|
|
type: "object",
|
|
properties: {
|
|
terms: {
|
|
type: "array",
|
|
items: {
|
|
type: "string"
|
|
}
|
|
},
|
|
location: {
|
|
enum: ["start", "anywhere"]
|
|
}
|
|
},
|
|
additionalProperties: false
|
|
}
|
|
]
|
|
},
|
|
|
|
create(context) {
|
|
|
|
const sourceCode = context.getSourceCode(),
|
|
configuration = context.options[0] || {},
|
|
warningTerms = configuration.terms || ["todo", "fixme", "xxx"],
|
|
location = configuration.location || "start",
|
|
selfConfigRegEx = /\bno-warning-comments\b/u;
|
|
|
|
/**
|
|
* Convert a warning term into a RegExp which will match a comment containing that whole word in the specified
|
|
* location ("start" or "anywhere"). If the term starts or ends with non word characters, then the match will not
|
|
* require word boundaries on that side.
|
|
*
|
|
* @param {string} term A term to convert to a RegExp
|
|
* @returns {RegExp} The term converted to a RegExp
|
|
*/
|
|
function convertToRegExp(term) {
|
|
const escaped = term.replace(/[-/\\$^*+?.()|[\]{}]/gu, "\\$&");
|
|
const wordBoundary = "\\b";
|
|
const eitherOrWordBoundary = `|${wordBoundary}`;
|
|
let prefix;
|
|
|
|
/*
|
|
* If the term ends in a word character (a-z0-9_), ensure a word
|
|
* boundary at the end, so that substrings do not get falsely
|
|
* matched. eg "todo" in a string such as "mastodon".
|
|
* If the term ends in a non-word character, then \b won't match on
|
|
* the boundary to the next non-word character, which would likely
|
|
* be a space. For example `/\bFIX!\b/.test('FIX! blah') === false`.
|
|
* In these cases, use no bounding match. Same applies for the
|
|
* prefix, handled below.
|
|
*/
|
|
const suffix = /\w$/u.test(term) ? "\\b" : "";
|
|
|
|
if (location === "start") {
|
|
|
|
/*
|
|
* When matching at the start, ignore leading whitespace, and
|
|
* there's no need to worry about word boundaries.
|
|
*/
|
|
prefix = "^\\s*";
|
|
} else if (/^\w/u.test(term)) {
|
|
prefix = wordBoundary;
|
|
} else {
|
|
prefix = "";
|
|
}
|
|
|
|
if (location === "start") {
|
|
|
|
/*
|
|
* For location "start" the regex should be
|
|
* ^\s*TERM\b. This checks the word boundary
|
|
* at the beginning of the comment.
|
|
*/
|
|
return new RegExp(prefix + escaped + suffix, "i"); // eslint-disable-line require-unicode-regexp
|
|
}
|
|
|
|
/*
|
|
* For location "anywhere" the regex should be
|
|
* \bTERM\b|\bTERM\b, this checks the entire comment
|
|
* for the term.
|
|
*/
|
|
return new RegExp(prefix + escaped + suffix + eitherOrWordBoundary + term + wordBoundary, "i"); // eslint-disable-line require-unicode-regexp
|
|
}
|
|
|
|
const warningRegExps = warningTerms.map(convertToRegExp);
|
|
|
|
/**
|
|
* Checks the specified comment for matches of the configured warning terms and returns the matches.
|
|
* @param {string} comment The comment which is checked.
|
|
* @returns {Array} All matched warning terms for this comment.
|
|
*/
|
|
function commentContainsWarningTerm(comment) {
|
|
const matches = [];
|
|
|
|
warningRegExps.forEach((regex, index) => {
|
|
if (regex.test(comment)) {
|
|
matches.push(warningTerms[index]);
|
|
}
|
|
});
|
|
|
|
return matches;
|
|
}
|
|
|
|
/**
|
|
* Checks the specified node for matching warning comments and reports them.
|
|
* @param {ASTNode} node The AST node being checked.
|
|
* @returns {void} undefined.
|
|
*/
|
|
function checkComment(node) {
|
|
if (astUtils.isDirectiveComment(node) && selfConfigRegEx.test(node.value)) {
|
|
return;
|
|
}
|
|
|
|
const matches = commentContainsWarningTerm(node.value);
|
|
|
|
matches.forEach(matchedTerm => {
|
|
context.report({
|
|
node,
|
|
message: "Unexpected '{{matchedTerm}}' comment.",
|
|
data: {
|
|
matchedTerm
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
return {
|
|
Program() {
|
|
const comments = sourceCode.getAllComments();
|
|
|
|
comments.filter(token => token.type !== "Shebang").forEach(checkComment);
|
|
}
|
|
};
|
|
}
|
|
};
|