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Update micromark parse to store flattened tokens on the returned tree via Symbol, use flattened tokens in filterByTypes for a ~14% elapsed time reduction.

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David Anson 2023-08-28 22:00:43 -07:00
parent 87fda39df8
commit 73e7271188
2 changed files with 24 additions and 6 deletions
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15
demo/markdownlint-browser.js
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@ -1137,6 +1137,7 @@ var _require = __webpack_require__(/*! markdownlint-micromark */ "markdownlint-m
preprocess = _require.preprocess;
var _require2 = __webpack_require__(/*! ./shared.js */ "../helpers/shared.js"),
newLineRe = _require2.newLineRe;
var flatTokensSymbol = Symbol("flat-tokens");
/**
* Markdown token.
@ -1197,6 +1198,7 @@ function micromarkParseWithOffset(markdown, micromarkOptions, referencesDefined,
// Create Token objects
var document = [];
var flatTokens = [];
var current = {
"children": document
};
@ -1247,6 +1249,7 @@ function micromarkParseWithOffset(markdown, micromarkOptions, referencesDefined,
current.htmlFlowChildren = micromarkParseWithOffset(reparseMarkdown, reparseOptions, referencesDefined, current.startLine - 1);
}
previous.children.push(current);
flatTokens.push(current);
} else if (kind === "exit") {
Object.freeze(current.children);
Object.freeze(current);
@ -1261,6 +1264,9 @@ function micromarkParseWithOffset(markdown, micromarkOptions, referencesDefined,
} finally {
_iterator.f();
}
Object.defineProperty(document, flatTokensSymbol, {
"value": flatTokens
});
Object.freeze(document);
return document;
}
@ -1311,9 +1317,14 @@ function filterByPredicate(tokens, allowed, transformChildren) {
* @returns {Token[]} Filtered tokens.
*/
function filterByTypes(tokens, allowed) {
return filterByPredicate(tokens, function (token) {
var predicate = function predicate(token) {
return allowed.includes(token.type);
});
};
var flatTokens = tokens[flatTokensSymbol];
if (flatTokens) {
return flatTokens.filter(predicate);
}
return filterByPredicate(tokens, predicate);
}
/**