'use strict'; const fs = require('fs'); const path = require('path'); // Import from index.js (the package entry point) to test the full re-export chain const rvdna = require('../index.js'); // ── Test harness ───────────────────────────────────────────────────────────── let passed = 0, failed = 0, benchResults = []; function assert(cond, msg) { if (!cond) throw new Error(`Assertion failed: ${msg}`); } function assertClose(a, b, eps, msg) { if (Math.abs(a - b) > eps) throw new Error(`${msg}: ${a} != ${b} (eps=${eps})`); } function assertGt(a, b, msg) { if (!(a > b)) throw new Error(`${msg}: expected ${a} > ${b}`); } function assertLt(a, b, msg) { if (!(a < b)) throw new Error(`${msg}: expected ${a} < ${b}`); } function test(name, fn) { try { fn(); passed++; process.stdout.write(` PASS ${name}\n`); } catch (e) { failed++; process.stdout.write(` FAIL ${name}: ${e.message}\n`); } } function bench(name, fn, iterations) { for (let i = 0; i < Math.min(iterations, 1000); i++) fn(); const start = performance.now(); for (let i = 0; i < iterations; i++) fn(); const elapsed = performance.now() - start; const perOp = (elapsed / iterations * 1000).toFixed(2); benchResults.push({ name, perOp: `${perOp} us`, total: `${elapsed.toFixed(1)} ms`, iterations }); process.stdout.write(` BENCH ${name}: ${perOp} us/op (${iterations} iters, ${elapsed.toFixed(1)} ms)\n`); } // ── Fixture loading ────────────────────────────────────────────────────────── const FIXTURES = path.join(__dirname, 'fixtures'); function loadFixture(name) { return fs.readFileSync(path.join(FIXTURES, name), 'utf8'); } function parseFixtureToGenotypes(name) { const text = loadFixture(name); const data = rvdna.parse23andMe(text); const gts = new Map(); for (const [rsid, snp] of data.snps) gts.set(rsid, snp.genotype); return { data, gts }; } // ═════════════════════════════════════════════════════════════════════════════ // SECTION 1: End-to-End Pipeline (parse 23andMe → biomarker scoring → stream) // ═════════════════════════════════════════════════════════════════════════════ process.stdout.write('\n--- End-to-End Pipeline ---\n'); test('e2e_high_risk_cardio_pipeline', () => { const { data, gts } = parseFixtureToGenotypes('sample-high-risk-cardio.23andme.txt'); // Stage 1: 23andMe parsing assert(data.totalMarkers === 29, `expected 29 markers, got ${data.totalMarkers}`); assert(data.build === 'GRCh37', `expected GRCh37, got ${data.build}`); assert(data.noCalls === 0, 'no no-calls expected'); // Stage 2: Genotyping analysis const analysis = rvdna.analyze23andMe(loadFixture('sample-high-risk-cardio.23andme.txt')); assert(analysis.cyp2d6.phenotype !== undefined, 'CYP2D6 phenotype should be defined'); assert(analysis.cyp2c19.phenotype !== undefined, 'CYP2C19 phenotype should be defined'); // Stage 3: Biomarker risk scoring const profile = rvdna.computeRiskScores(gts); assert(profile.profileVector.length === 64, 'profile vector should be 64-dim'); assert(profile.globalRiskScore >= 0 && profile.globalRiskScore <= 1, 'risk in [0,1]'); // High-risk cardiac: MTHFR 677TT + LPA het + SLCO1B1 het → elevated metabolism + cardiovascular const metab = profile.categoryScores['Metabolism']; assertGt(metab.score, 0.3, 'MTHFR 677TT should elevate metabolism risk'); assertGt(metab.confidence, 0.5, 'metabolism confidence should be substantial'); const cardio = profile.categoryScores['Cardiovascular']; assert(cardio.contributingVariants.includes('rs10455872'), 'LPA variant should contribute'); assert(cardio.contributingVariants.includes('rs4363657'), 'SLCO1B1 variant should contribute'); assert(cardio.contributingVariants.includes('rs3798220'), 'LPA rs3798220 should contribute'); // Stage 4: Feed synthetic biomarker readings through streaming processor const cfg = rvdna.defaultStreamConfig(); const processor = new rvdna.StreamProcessor(cfg); const readings = rvdna.generateReadings(cfg, 50, 42); for (const r of readings) processor.processReading(r); const summary = processor.summary(); assert(summary.totalReadings > 0, 'should have processed readings'); assert(summary.anomalyRate >= 0, 'anomaly rate should be valid'); }); test('e2e_low_risk_baseline_pipeline', () => { const { data, gts } = parseFixtureToGenotypes('sample-low-risk-baseline.23andme.txt'); // Parse assert(data.totalMarkers === 29, `expected 29 markers`); assert(data.build === 'GRCh38', `expected GRCh38, got ${data.build}`); // Score const profile = rvdna.computeRiskScores(gts); assertLt(profile.globalRiskScore, 0.15, 'all-ref should be very low risk'); // All categories should be near-zero for (const [cat, cs] of Object.entries(profile.categoryScores)) { assertLt(cs.score, 0.05, `${cat} should be near-zero for all-ref`); } // APOE should be e3/e3 const apoe = rvdna.determineApoe(gts); assert(apoe.genotype.includes('e3/e3'), `expected e3/e3, got ${apoe.genotype}`); }); // ═════════════════════════════════════════════════════════════════════════════ // SECTION 2: Clinical Scenario Tests // ═════════════════════════════════════════════════════════════════════════════ process.stdout.write('\n--- Clinical Scenarios ---\n'); test('scenario_apoe_e4e4_brca1_carrier', () => { const { gts } = parseFixtureToGenotypes('sample-multi-risk.23andme.txt'); const profile = rvdna.computeRiskScores(gts); // APOE e4/e4 → high neurological risk const neuro = profile.categoryScores['Neurological']; assertGt(neuro.score, 0.5, `APOE e4/e4 + COMT Met/Met should push neuro >0.5, got ${neuro.score}`); assert(neuro.contributingVariants.includes('rs429358'), 'APOE should contribute'); assert(neuro.contributingVariants.includes('rs4680'), 'COMT should contribute'); // BRCA1 carrier + TP53 variant → elevated cancer risk with interaction const cancer = profile.categoryScores['Cancer Risk']; assertGt(cancer.score, 0.4, `BRCA1 carrier + TP53 should push cancer >0.4, got ${cancer.score}`); assert(cancer.contributingVariants.includes('rs80357906'), 'BRCA1 should contribute'); assert(cancer.contributingVariants.includes('rs1042522'), 'TP53 should contribute'); // Cardiovascular should be elevated from SLCO1B1 + LPA const cardio = profile.categoryScores['Cardiovascular']; assertGt(cardio.score, 0.3, `SLCO1B1 + LPA should push cardio >0.3, got ${cardio.score}`); // NQO1 null (TT) should contribute to cancer assert(cancer.contributingVariants.includes('rs1800566'), 'NQO1 should contribute'); // Global risk should be substantial assertGt(profile.globalRiskScore, 0.4, `multi-risk global should be >0.4, got ${profile.globalRiskScore}`); // APOE determination const apoe = rvdna.determineApoe(gts); assert(apoe.genotype.includes('e4/e4'), `expected e4/e4, got ${apoe.genotype}`); }); test('scenario_pcsk9_protective', () => { const { gts } = parseFixtureToGenotypes('sample-pcsk9-protective.23andme.txt'); const profile = rvdna.computeRiskScores(gts); // PCSK9 R46L het (rs11591147 GT) → negative cardiovascular weight (protective) const cardio = profile.categoryScores['Cardiovascular']; // With only PCSK9 protective allele and no risk alleles, cardio score should be very low assertLt(cardio.score, 0.05, `PCSK9 protective should keep cardio very low, got ${cardio.score}`); // APOE e2/e3 protective const apoe = rvdna.determineApoe(gts); assert(apoe.genotype.includes('e2/e3'), `expected e2/e3, got ${apoe.genotype}`); }); test('scenario_mthfr_compound_heterozygote', () => { const { gts } = parseFixtureToGenotypes('sample-high-risk-cardio.23andme.txt'); // This file has rs1801133=AA (677TT hom) + rs1801131=GT (1298AC het) → compound score 3 const profile = rvdna.computeRiskScores(gts); const metab = profile.categoryScores['Metabolism']; // MTHFR compound should push metabolism risk up assertGt(metab.score, 0.3, `MTHFR compound should elevate metabolism, got ${metab.score}`); assert(metab.contributingVariants.includes('rs1801133'), 'rs1801133 (C677T) should contribute'); assert(metab.contributingVariants.includes('rs1801131'), 'rs1801131 (A1298C) should contribute'); // MTHFR interaction with MTHFR should amplify // The interaction rs1801133×rs1801131 has modifier 1.3 }); test('scenario_comt_oprm1_pain_interaction', () => { // Use controlled genotypes that don't saturate the category at 1.0 const gts = new Map(); for (const snp of rvdna.SNPS) gts.set(snp.rsid, snp.homRef); gts.set('rs4680', 'AA'); // COMT Met/Met gts.set('rs1799971', 'GG'); // OPRM1 Asp/Asp const profile = rvdna.computeRiskScores(gts); const neuro = profile.categoryScores['Neurological']; // Without OPRM1 variant → no interaction modifier const gts2 = new Map(gts); gts2.set('rs1799971', 'AA'); // reference const profile2 = rvdna.computeRiskScores(gts2); const neuro2 = profile2.categoryScores['Neurological']; assertGt(neuro.score, neuro2.score, 'COMT×OPRM1 interaction should amplify neurological risk'); }); test('scenario_drd2_comt_interaction', () => { // Use controlled genotypes that don't saturate the category at 1.0 const gts = new Map(); for (const snp of rvdna.SNPS) gts.set(snp.rsid, snp.homRef); gts.set('rs1800497', 'AA'); // DRD2 A1/A1 gts.set('rs4680', 'AA'); // COMT Met/Met const profile = rvdna.computeRiskScores(gts); // Without DRD2 variant → no DRD2×COMT interaction const gts2 = new Map(gts); gts2.set('rs1800497', 'GG'); // reference const profile2 = rvdna.computeRiskScores(gts2); assertGt( profile.categoryScores['Neurological'].score, profile2.categoryScores['Neurological'].score, 'DRD2×COMT interaction should amplify' ); }); // ═════════════════════════════════════════════════════════════════════════════ // SECTION 3: Cross-Validation (JS matches Rust expectations) // ═════════════════════════════════════════════════════════════════════════════ process.stdout.write('\n--- Cross-Validation (JS ↔ Rust parity) ---\n'); test('parity_reference_count_matches_rust', () => { assert(rvdna.BIOMARKER_REFERENCES.length === 13, 'should have 13 references (matches Rust)'); assert(rvdna.SNPS.length === 20, 'should have 20 SNPs (matches Rust)'); assert(rvdna.INTERACTIONS.length === 6, 'should have 6 interactions (matches Rust)'); assert(rvdna.CAT_ORDER.length === 4, 'should have 4 categories (matches Rust)'); }); test('parity_snp_table_exact_match', () => { // Verify first and last SNP match Rust exactly const first = rvdna.SNPS[0]; assert(first.rsid === 'rs429358', 'first SNP rsid'); assertClose(first.wHet, 0.4, 1e-10, 'first SNP wHet'); assertClose(first.wAlt, 0.9, 1e-10, 'first SNP wAlt'); assert(first.homRef === 'TT', 'first SNP homRef'); assert(first.category === 'Neurological', 'first SNP category'); const last = rvdna.SNPS[19]; assert(last.rsid === 'rs11591147', 'last SNP rsid'); assertClose(last.wHet, -0.30, 1e-10, 'PCSK9 wHet (negative = protective)'); assertClose(last.wAlt, -0.55, 1e-10, 'PCSK9 wAlt (negative = protective)'); }); test('parity_interaction_table_exact_match', () => { const i0 = rvdna.INTERACTIONS[0]; assert(i0.rsidA === 'rs4680' && i0.rsidB === 'rs1799971', 'first interaction pair'); assertClose(i0.modifier, 1.4, 1e-10, 'COMT×OPRM1 modifier'); const i3 = rvdna.INTERACTIONS[3]; assert(i3.rsidA === 'rs80357906' && i3.rsidB === 'rs1042522', 'BRCA1×TP53 pair'); assertClose(i3.modifier, 1.5, 1e-10, 'BRCA1×TP53 modifier'); }); test('parity_z_score_matches_rust', () => { // z_score(mid, ref) should be 0.0 (Rust test_z_score_midpoint_is_zero) const ref = rvdna.BIOMARKER_REFERENCES[0]; // Total Cholesterol const mid = (ref.normalLow + ref.normalHigh) / 2; assertClose(rvdna.zScore(mid, ref), 0, 1e-10, 'midpoint z-score = 0'); // z_score(normalHigh, ref) should be 1.0 (Rust test_z_score_high_bound_is_one) assertClose(rvdna.zScore(ref.normalHigh, ref), 1, 1e-10, 'high-bound z-score = 1'); }); test('parity_classification_matches_rust', () => { const ref = rvdna.BIOMARKER_REFERENCES[0]; // Total Cholesterol 125-200 assert(rvdna.classifyBiomarker(150, ref) === 'Normal', 'Normal'); assert(rvdna.classifyBiomarker(350, ref) === 'CriticalHigh', 'CriticalHigh (>300)'); assert(rvdna.classifyBiomarker(110, ref) === 'Low', 'Low'); assert(rvdna.classifyBiomarker(90, ref) === 'CriticalLow', 'CriticalLow (<100)'); }); test('parity_vector_layout_64dim_l2', () => { // Rust test_vector_dimension_is_64 and test_vector_is_l2_normalized const gts = new Map(); for (const snp of rvdna.SNPS) gts.set(snp.rsid, snp.homRef); gts.set('rs4680', 'AG'); gts.set('rs1799971', 'AG'); const profile = rvdna.computeRiskScores(gts); assert(profile.profileVector.length === 64, '64 dims'); let norm = 0; for (let i = 0; i < 64; i++) norm += profile.profileVector[i] ** 2; norm = Math.sqrt(norm); assertClose(norm, 1.0, 1e-4, 'L2 norm'); }); test('parity_hom_ref_low_risk_matches_rust', () => { // Rust test_risk_scores_all_hom_ref_low_risk: global < 0.15 const gts = new Map(); for (const snp of rvdna.SNPS) gts.set(snp.rsid, snp.homRef); const profile = rvdna.computeRiskScores(gts); assertLt(profile.globalRiskScore, 0.15, 'hom-ref should be <0.15'); }); test('parity_high_cancer_matches_rust', () => { // Rust test_risk_scores_high_cancer_risk: cancer > 0.3 const gts = new Map(); for (const snp of rvdna.SNPS) gts.set(snp.rsid, snp.homRef); gts.set('rs80357906', 'DI'); gts.set('rs1042522', 'GG'); gts.set('rs11571833', 'TT'); const profile = rvdna.computeRiskScores(gts); assertGt(profile.categoryScores['Cancer Risk'].score, 0.3, 'cancer > 0.3'); }); // ═════════════════════════════════════════════════════════════════════════════ // SECTION 4: Population-Scale Correlation Tests // ═════════════════════════════════════════════════════════════════════════════ process.stdout.write('\n--- Population Correlations ---\n'); test('population_apoe_lowers_hdl', () => { // Mirrors Rust test_apoe_lowers_hdl_in_population const pop = rvdna.generateSyntheticPopulation(300, 88); const apoeHdl = [], refHdl = []; for (const p of pop) { const hdl = p.biomarkerValues['HDL'] || 0; const neuro = p.categoryScores['Neurological'] ? p.categoryScores['Neurological'].score : 0; if (neuro > 0.3) apoeHdl.push(hdl); else refHdl.push(hdl); } if (apoeHdl.length > 0 && refHdl.length > 0) { const avgApoe = apoeHdl.reduce((a, b) => a + b, 0) / apoeHdl.length; const avgRef = refHdl.reduce((a, b) => a + b, 0) / refHdl.length; assertLt(avgApoe, avgRef, 'APOE e4 should lower HDL'); } }); test('population_lpa_elevates_lpa_biomarker', () => { const pop = rvdna.generateSyntheticPopulation(300, 44); const lpaHigh = [], lpaLow = []; for (const p of pop) { const lpaVal = p.biomarkerValues['Lp(a)'] || 0; const cardio = p.categoryScores['Cardiovascular'] ? p.categoryScores['Cardiovascular'].score : 0; if (cardio > 0.2) lpaHigh.push(lpaVal); else lpaLow.push(lpaVal); } if (lpaHigh.length > 0 && lpaLow.length > 0) { const avgHigh = lpaHigh.reduce((a, b) => a + b, 0) / lpaHigh.length; const avgLow = lpaLow.reduce((a, b) => a + b, 0) / lpaLow.length; assertGt(avgHigh, avgLow, 'cardiovascular risk should correlate with elevated Lp(a)'); } }); test('population_risk_score_distribution', () => { const pop = rvdna.generateSyntheticPopulation(1000, 123); const scores = pop.map(p => p.globalRiskScore); const min = Math.min(...scores); const max = Math.max(...scores); const mean = scores.reduce((a, b) => a + b, 0) / scores.length; // Should have good spread assertGt(max - min, 0.2, `risk score range should be >0.2, got ${max - min}`); // Mean should be moderate (not all near 0 or 1) assertGt(mean, 0.05, 'mean risk should be >0.05'); assertLt(mean, 0.7, 'mean risk should be <0.7'); }); test('population_all_biomarkers_within_clinical_limits', () => { const pop = rvdna.generateSyntheticPopulation(500, 55); for (const p of pop) { for (const bref of rvdna.BIOMARKER_REFERENCES) { const val = p.biomarkerValues[bref.name]; assert(val !== undefined, `missing ${bref.name} for ${p.subjectId}`); assert(val >= 0, `${bref.name} should be non-negative, got ${val}`); if (bref.criticalHigh !== null) { assertLt(val, bref.criticalHigh * 1.25, `${bref.name} should be < criticalHigh*1.25`); } } } }); // ═════════════════════════════════════════════════════════════════════════════ // SECTION 5: Streaming with Real-Data Correlated Biomarkers // ═════════════════════════════════════════════════════════════════════════════ process.stdout.write('\n--- Streaming with Real Biomarkers ---\n'); test('stream_cusum_changepoint_on_shift', () => { // Mirror Rust test_cusum_changepoint_detection const cfg = { ...rvdna.defaultStreamConfig(), windowSize: 20 }; const p = new rvdna.StreamProcessor(cfg); // Establish baseline at 85 for (let i = 0; i < 30; i++) { p.processReading({ timestampMs: i * 1000, biomarkerId: 'glucose', value: 85, referenceLow: 70, referenceHigh: 100, isAnomaly: false, zScore: 0, }); } // Sustained shift to 120 for (let i = 30; i < 50; i++) { p.processReading({ timestampMs: i * 1000, biomarkerId: 'glucose', value: 120, referenceLow: 70, referenceHigh: 100, isAnomaly: false, zScore: 0, }); } const stats = p.getStats('glucose'); assertGt(stats.mean, 90, `mean should shift upward after changepoint: ${stats.mean}`); }); test('stream_drift_detected_as_trend', () => { // Mirror Rust test_trend_detection const cfg = { ...rvdna.defaultStreamConfig(), windowSize: 50 }; const p = new rvdna.StreamProcessor(cfg); // Strong upward drift for (let i = 0; i < 50; i++) { p.processReading({ timestampMs: i * 1000, biomarkerId: 'glucose', value: 70 + i * 0.5, referenceLow: 70, referenceHigh: 100, isAnomaly: false, zScore: 0, }); } assertGt(p.getStats('glucose').trendSlope, 0, 'should detect positive trend'); }); test('stream_population_biomarker_values_through_processor', () => { // Take synthetic population biomarker values and stream them const pop = rvdna.generateSyntheticPopulation(20, 77); const cfg = { ...rvdna.defaultStreamConfig(), windowSize: 20 }; const p = new rvdna.StreamProcessor(cfg); for (let i = 0; i < pop.length; i++) { const homocysteine = pop[i].biomarkerValues['Homocysteine']; p.processReading({ timestampMs: i * 1000, biomarkerId: 'homocysteine', value: homocysteine, referenceLow: 5, referenceHigh: 15, isAnomaly: false, zScore: 0, }); } const stats = p.getStats('homocysteine'); assert(stats !== null, 'should have homocysteine stats'); assertGt(stats.count, 0, 'should have processed readings'); assertGt(stats.mean, 0, 'mean should be positive'); }); // ═════════════════════════════════════════════════════════════════════════════ // SECTION 6: Package Re-export Verification // ═════════════════════════════════════════════════════════════════════════════ process.stdout.write('\n--- Package Re-exports ---\n'); test('index_exports_all_biomarker_apis', () => { const expectedFns = [ 'biomarkerReferences', 'zScore', 'classifyBiomarker', 'computeRiskScores', 'encodeProfileVector', 'generateSyntheticPopulation', ]; for (const fn of expectedFns) { assert(typeof rvdna[fn] === 'function', `missing export: ${fn}`); } const expectedConsts = ['BIOMARKER_REFERENCES', 'SNPS', 'INTERACTIONS', 'CAT_ORDER']; for (const c of expectedConsts) { assert(rvdna[c] !== undefined, `missing export: ${c}`); } }); test('index_exports_all_stream_apis', () => { assert(typeof rvdna.RingBuffer === 'function', 'missing RingBuffer'); assert(typeof rvdna.StreamProcessor === 'function', 'missing StreamProcessor'); assert(typeof rvdna.generateReadings === 'function', 'missing generateReadings'); assert(typeof rvdna.defaultStreamConfig === 'function', 'missing defaultStreamConfig'); assert(rvdna.BIOMARKER_DEFS !== undefined, 'missing BIOMARKER_DEFS'); }); test('index_exports_v02_apis_unchanged', () => { const v02fns = [ 'encode2bit', 'decode2bit', 'translateDna', 'cosineSimilarity', 'isNativeAvailable', 'normalizeGenotype', 'parse23andMe', 'callCyp2d6', 'callCyp2c19', 'determineApoe', 'analyze23andMe', ]; for (const fn of v02fns) { assert(typeof rvdna[fn] === 'function', `v0.2 API missing: ${fn}`); } }); // ═════════════════════════════════════════════════════════════════════════════ // SECTION 7: Optimized Benchmarks (pre/post optimization comparison) // ═════════════════════════════════════════════════════════════════════════════ process.stdout.write('\n--- Optimized Benchmarks ---\n'); // Prepare benchmark genotypes from real fixture const { gts: benchGts } = parseFixtureToGenotypes('sample-high-risk-cardio.23andme.txt'); bench('computeRiskScores (real 23andMe data, 20 SNPs)', () => { rvdna.computeRiskScores(benchGts); }, 20000); bench('encodeProfileVector (real profile)', () => { const p = rvdna.computeRiskScores(benchGts); rvdna.encodeProfileVector(p); }, 20000); bench('StreamProcessor.processReading (optimized incremental)', () => { const p = new rvdna.StreamProcessor({ ...rvdna.defaultStreamConfig(), windowSize: 100 }); const r = { timestampMs: 0, biomarkerId: 'glucose', value: 85, referenceLow: 70, referenceHigh: 100, isAnomaly: false, zScore: 0 }; for (let i = 0; i < 100; i++) { r.timestampMs = i * 1000; p.processReading(r); } }, 2000); bench('generateSyntheticPopulation(100) (optimized lookups)', () => { rvdna.generateSyntheticPopulation(100, 42); }, 200); bench('full pipeline: parse + score + stream (real data)', () => { const text = loadFixture('sample-high-risk-cardio.23andme.txt'); const data = rvdna.parse23andMe(text); const gts = new Map(); for (const [rsid, snp] of data.snps) gts.set(rsid, snp.genotype); const profile = rvdna.computeRiskScores(gts); const proc = new rvdna.StreamProcessor(rvdna.defaultStreamConfig()); for (const bref of rvdna.BIOMARKER_REFERENCES) { const val = profile.biomarkerValues[bref.name] || ((bref.normalLow + bref.normalHigh) / 2); proc.processReading({ timestampMs: 0, biomarkerId: bref.name, value: val, referenceLow: bref.normalLow, referenceHigh: bref.normalHigh, isAnomaly: false, zScore: 0, }); } }, 5000); bench('population 1000 subjects', () => { rvdna.generateSyntheticPopulation(1000, 42); }, 20); // ═════════════════════════════════════════════════════════════════════════════ // Summary // ═════════════════════════════════════════════════════════════════════════════ process.stdout.write(`\n${'='.repeat(70)}\n`); process.stdout.write(`Results: ${passed} passed, ${failed} failed, ${passed + failed} total\n`); if (benchResults.length > 0) { process.stdout.write('\nBenchmark Summary:\n'); for (const b of benchResults) { process.stdout.write(` ${b.name}: ${b.perOp}/op\n`); } } process.stdout.write(`${'='.repeat(70)}\n`); process.exit(failed > 0 ? 1 : 0);