const fs=require('fs'),assert=require('assert/strict');
const before=JSON.parse(fs.readFileSync('backend/reports/repository-runtime-comparison.json'));
const after=JSON.parse(fs.readFileSync('backend/reports/repository-runtime-comparison-after.json'));
const median=a=>{a=[...a].sort((a,b)=>a-b);return (a[Math.floor((a.length-1)/2)]+a[Math.floor(a.length/2)])/2};
const summary=after.results[0].results.map(x=>{
const row={name:x.name};
for(const [label,report,runtime] of [['ts',after,'node'],['goBefore',before,'go'],['goAfter',after,'go']]){
const runs=report.results.filter(x=>x.runtime===runtime).map(run=>run.results.find(y=>y.name===row.name));
assert(runs.every(x=>x.output.status===200));
row[label]={output:runs[0].output,coldMs:median(runs.map(x=>x.cold.ms)),warm:Object.fromEntries([1,8].map(c=>[c,Object.fromEntries(['p50Ms','p95Ms','cpuMs','peakProcessTreeRssBytes','requestsPerSecond'].map(m=>[m,median(runs.map(x=>x.warm.find(w=>w.concurrency===c)[m]))]))]))};
}
assert.deepEqual(row.ts.output,row.goBefore.output);assert.deepEqual(row.ts.output,row.goAfter.output);
return row;
});
const report={fixture:after.fixture,method:after.method,validation:{outputs:'All seven response signatures match TypeScript, Go before and Go after in both rounds.',tests:['Targeted race suites passed: large tree scans, index parity/eviction/collisions, website lookup, shared HTTP authorization and representations.','go vet passed.']},summary};
fs.writeFileSync('backend/reports/slower-path-optimization.json',JSON.stringify(report,null,2));
const html=`
Go’s slower paths, corrected
Same repository snapshot and 1,000-file directory fixture. Both runtimes rerun in alternating order; all seven successful response signatures still match.
Use case
TypeScript
Go before
Go after
Other measured endpoints
Use case
TypeScript
Go before
Go after
Counts now aggregate by directory in MongoDB. Website files use verified direct lookups or a collision-aware path index, with live snapshot and authorization checks.
Loopback backend timings, identity encoding, shared caches enabled, one worker. Two rounds; medians of per-round medians. Excludes GitHub, CDN and browser rendering. First masked/custom-path requests can still build an index. ZIP was not rerun because these changes do not alter its serving path.