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⚡ Bolt: Refactor Docs-Diff O(N*M) array comparisons to O(N+M) Set mapping #261

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⚡ Bolt: Refactor Docs-Diff O(N*M) array comparisons to O(N+M) Set mapping #261

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27 changes: 18 additions & 9 deletions cli/commands/diff.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -346,10 +346,12 @@ function diffTests(dir, config = {}) {
if (docTests.size === 0 && codeTests.size === 0) return null;

// Glob-aware matching (documented entries are often patterns or basenames).
const codeArr = [...codeTests];
// PERFORMANCE OPTIMIZATION: Pre-compute expensive basenames outside loops and
// use a single-pass iteration with Sets to eliminate O(N*M) array comparisons.
const codeObjects = [...codeTests].map(c => ({ original: c, base: basename(c) }));

// PERFORMANCE OPTIMIZATION: Pre-compile regular expressions to avoid O(N*M)
// instantiation bottlenecks inside the nested .filter and .some loops below.
// instantiation bottlenecks inside loops below.
const docMatchers = [...docTests].map(docEntry => {
const entry = String(docEntry).trim();
const hasSlash = entry.includes('/');
Expand All @@ -363,17 +365,24 @@ function diffTests(dir, config = {}) {
};
});

const matches = (matcher, codeRel) => {
const subject = matcher.hasSlash ? codeRel : basename(codeRel);
return matcher.rx.test(subject);
};
const matchedDocs = new Set();
const matchedCode = new Set();

for (const m of docMatchers) {
for (const c of codeObjects) {
if (m.rx.test(m.hasSlash ? c.original : c.base)) {
matchedDocs.add(m.original);
matchedCode.add(c.original);
}
}
}

return {
title: 'Test Files',
icon: '🧪',
onlyInDocs: docMatchers.filter(m => !codeArr.some(c => matches(m, c))).map(m => m.original),
onlyInCode: codeArr.filter(c => !docMatchers.some(m => matches(m, c))),
matched: docMatchers.filter(m => codeArr.some(c => matches(m, c))).map(m => m.original),
onlyInDocs: docMatchers.filter(m => !matchedDocs.has(m.original)).map(m => m.original),
onlyInCode: codeObjects.filter(c => !matchedCode.has(c.original)).map(c => c.original),
matched: docMatchers.filter(m => matchedDocs.has(m.original)).map(m => m.original),
};
}

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25 changes: 17 additions & 8 deletions cli/validators/docs-diff.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -168,10 +168,12 @@ function diffTests(dir, config) {
// bare basenames or full paths. Treat each documented entry as a glob and
// match it against code test paths (or basenames when the entry has no slash).
// Exact-string comparison produced the false "N documented but not found".
const codeArr = [...codeTests];
// PERFORMANCE OPTIMIZATION: Pre-compute expensive basenames outside loops and
// use a single-pass iteration with Sets to eliminate O(N*M) array comparisons.
const codeObjects = [...codeTests].map(c => ({ original: c, base: basename(c) }));

// PERFORMANCE OPTIMIZATION: Pre-compile regular expressions to avoid O(N*M)
// instantiation bottlenecks inside the nested .filter and .some loops below.
// instantiation bottlenecks inside loops below.
const docMatchers = [...docTests].map(docEntry => {
const entry = String(docEntry).trim();
const hasSlash = entry.includes('/');
Expand All @@ -188,15 +190,22 @@ function diffTests(dir, config) {
};
});

const matches = (matcher, codeRel) => {
const subject = matcher.hasSlash ? codeRel : basename(codeRel);
return matcher.rx.test(subject);
};
const matchedDocs = new Set();
const matchedCode = new Set();

for (const m of docMatchers) {
for (const c of codeObjects) {
if (m.rx.test(m.hasSlash ? c.original : c.base)) {
matchedDocs.add(m.original);
matchedCode.add(c.original);
}
}
}

return {
title: 'Test Files',
onlyInDocs: docMatchers.filter(m => !codeArr.some(c => matches(m, c))).map(m => m.original),
onlyInCode: codeArr.filter(c => !docMatchers.some(m => matches(m, c))),
onlyInDocs: docMatchers.filter(m => !matchedDocs.has(m.original)).map(m => m.original),
onlyInCode: codeObjects.filter(c => !matchedCode.has(c.original)).map(c => c.original),
};
}

Expand Down