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Refactor to remove micromark helper getSiblingTokens for simpler code and better performance.

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David Anson 2024-02-26 21:07:24 -08:00
parent 4436d84b55
commit 996d88a9b4
4 changed files with 88 additions and 140 deletions
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48
lib/md028.js
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@ -3,36 +3,36 @@
"use strict";
const { addError } = require("../helpers");
const { getSiblingTokens } = require("../helpers/micromark.cjs");
const { filterByTypes } = require("../helpers/micromark.cjs");
const ignoreTypes = new Set([ "lineEnding", "listItemIndent", "linePrefix" ]);
module.exports = {
"names": [ "MD028", "no-blanks-blockquote" ],
"description": "Blank line inside blockquote",
"tags": [ "blockquote", "whitespace" ],
"function": function MD028(params, onError) {
for (const siblings of getSiblingTokens(params.parsers.micromark.tokens)) {
let errorLineNumbers = null;
for (const sibling of siblings) {
switch (sibling.type) {
case "blockQuote":
for (const lineNumber of (errorLineNumbers || [])) {
addError(onError, lineNumber);
}
errorLineNumbers = [];
break;
case "lineEnding":
case "linePrefix":
case "listItemIndent":
// Ignore
break;
case "lineEndingBlank":
if (errorLineNumbers) {
errorLineNumbers.push(sibling.startLine);
}
break;
default:
errorLineNumbers = null;
break;
const { tokens } = params.parsers.micromark;
for (const token of filterByTypes(tokens, [ "blockQuote" ])) {
const errorLineNumbers = [];
const siblings = token.parent?.children || tokens;
for (let i = siblings.indexOf(token) + 1; i < siblings.length; i++) {
const sibling = siblings[i];
const { startLine, type } = sibling;
if (type === "lineEndingBlank") {
// Possible blank between blockquotes
errorLineNumbers.push(startLine);
} else if (ignoreTypes.has(type)) {
// Ignore invisible formatting
} else if (type === "blockQuote") {
// Blockquote followed by blockquote
for (const lineNumber of errorLineNumbers) {
addError(onError, lineNumber);
}
break;
} else {
// Blockquote not followed by blockquote
break;
}
}
}