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app_vue/node_modules/eslint/lib/rules/no-warning-comments.js

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+/**
+ * @fileoverview Rule that warns about used warning comments
+ * @author Alexander Schmidt <https://github.com/lxanders>
+ */
+
+"use strict";
+
+const escapeRegExp = require("escape-string-regexp");
+const astUtils = require("./utils/ast-utils");
+
+const CHAR_LIMIT = 40;
+
+//------------------------------------------------------------------------------
+// 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
+            }
+        ],
+
+        messages: {
+            unexpectedComment: "Unexpected '{{matchedTerm}}' comment: '{{comment}}'."
+        }
+    },
+
+    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 = escapeRegExp(term);
+            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, "iu");
+            }
+
+            /*
+             * 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,
+                "iu"
+            );
+        }
+
+        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) {
+            const comment = node.value;
+
+            if (
+                astUtils.isDirectiveComment(node) &&
+                selfConfigRegEx.test(comment)
+            ) {
+                return;
+            }
+
+            const matches = commentContainsWarningTerm(comment);
+
+            matches.forEach(matchedTerm => {
+                let commentToDisplay = "";
+                let truncated = false;
+
+                for (const c of comment.trim().split(/\s+/u)) {
+                    const tmp = commentToDisplay ? `${commentToDisplay} ${c}` : c;
+
+                    if (tmp.length <= CHAR_LIMIT) {
+                        commentToDisplay = tmp;
+                    } else {
+                        truncated = true;
+                        break;
+                    }
+                }
+
+                context.report({
+                    node,
+                    messageId: "unexpectedComment",
+                    data: {
+                        matchedTerm,
+                        comment: `${commentToDisplay}${
+                            truncated ? "..." : ""
+                        }`
+                    }
+                });
+            });
+        }
+
+        return {
+            Program() {
+                const comments = sourceCode.getAllComments();
+
+                comments
+                    .filter(token => token.type !== "Shebang")
+                    .forEach(checkComment);
+            }
+        };
+    }
+};