perf: use worst-case scenario for benches

Author: JairusSW

CHANGELOG.md

@@ -1,8 +1,8 @@
 # Changelog
 
-## Unreleased
+## 2026-06-10 - v1.6.0
 
-- bench/charts: charts with a sparse extreme throughput tail now switch their measured axis to a log10 scale so ordinary values remain readable without clipping any result. The detector combines Tukey's far-outlier fence with median absolute deviation and requires a clearly separated upper tail; charts without extreme outliers remain linear. Classic-payload serialization always uses log10 because its JSON.Obj series is a distinct, much faster population
+- perf: much faster deserialization. uses default values as cache.
 
 ## 2026-06-10 - v1.5.0
 

assembly/__benches__/classic/canada.bench.ts

@@ -3,7 +3,6 @@ import { expect } from "../../__tests__/lib";
 import {
   blackbox,
   bench,
-  ChangingPayloads,
   dumpToFile,
   readFile,
   utf8ByteLength,
@@ -12,29 +11,29 @@ import {
 
 @json
 class CanadaProperties {
-  name: string = "";
+  name!: string;
 }
 
 
 @json
 class CanadaGeometry {
-  type: string = "";
-  coordinates: Array<Array<Array<f64>>> = [];
+  type!: string;
+  coordinates!: Array<Array<Array<f64>>>;
 }
 
 
 @json
 class CanadaFeature {
-  type: string = "";
-  properties: CanadaProperties = new CanadaProperties();
-  geometry: CanadaGeometry = new CanadaGeometry();
+  type!: string;
+  properties!: CanadaProperties;
+  geometry!: CanadaGeometry;
 }
 
 
 @json
 class Canada {
-  type: string = "";
-  features: Array<CanadaFeature> = [];
+  type!: string;
+  features!: Array<CanadaFeature>;
 }
 
 const prettyJson = readFile(
@@ -46,14 +45,12 @@ expect(JSON.stringify(JSON.parse<Canada>(prettyJson))).toBe(minJson);
 expect(JSON.stringify(JSON.parse<Canada>(minJson))).toBe(minJson);
 
 const canada = JSON.parse<Canada>(prettyJson);
-const prettyPayloads = new ChangingPayloads(prettyJson);
-const minPayloads = new ChangingPayloads(minJson);
 const out = "";
 
 bench(
   "Deserialize Canada (pretty)",
   () => {
-    blackbox(JSON.parse<Canada>(prettyPayloads.next()));
+    blackbox(JSON.parse<Canada>(prettyJson));
   },
   500,
   utf8ByteLength(prettyJson),
@@ -63,7 +60,7 @@ dumpToFile("canada-pretty", "deserialize");
 bench(
   "Deserialize Canada (min)",
   () => {
-    blackbox(JSON.parse<Canada>(minPayloads.next()));
+    blackbox(JSON.parse<Canada>(minJson));
   },
   500,
   utf8ByteLength(minJson),

assembly/__benches__/classic/canada.lazy.bench.ts

@@ -13,29 +13,29 @@ import {
 
 @json({ lazy: "auto" })
 class CanadaProperties {
-  name: string = "";
+  name!: string;
 }
 
 
 @json({ lazy: "auto" })
 class CanadaGeometry {
-  type: string = "";
-  coordinates: Array<Array<Array<f64>>> = [];
+  type!: string;
+  coordinates!: Array<Array<Array<f64>>>;
 }
 
 
 @json({ lazy: "auto" })
 class CanadaFeature {
-  type: string = "";
-  properties: CanadaProperties = new CanadaProperties();
-  geometry: CanadaGeometry = new CanadaGeometry();
+  type!: string;
+  properties!: CanadaProperties;
+  geometry!: CanadaGeometry;
 }
 
 
 @json({ lazy: "auto" })
 class Canada {
-  type: string = "";
-  features: Array<CanadaFeature> = [];
+  type!: string;
+  features!: Array<CanadaFeature>;
 }
 
 function touchRoot(root: Canada): f64 {

assembly/__benches__/classic/citm_catalog.bench.ts

@@ -3,7 +3,6 @@ import { expect } from "../../__tests__/lib";
 import {
   blackbox,
   bench,
-  ChangingPayloads,
   dumpToFile,
   readFile,
   utf8ByteLength,
@@ -16,66 +15,66 @@ import {
 
 @json
 class Price {
-  amount: i64 = 0;
-  audienceSubCategoryId: i64 = 0;
-  seatCategoryId: i64 = 0;
+  amount!: i64;
+  audienceSubCategoryId!: i64;
+  seatCategoryId!: i64;
 }
 
 
 @json
 class Area {
-  areaId: i64 = 0;
-  blockIds: i64[] = [];
+  areaId!: i64;
+  blockIds!: i64[];
 }
 
 
 @json
 class SeatCategory {
-  areas: Area[] = [];
-  seatCategoryId: i64 = 0;
+  areas!: Area[];
+  seatCategoryId!: i64;
 }
 
 
 @json
 class Performance {
-  eventId: i64 = 0;
-  id: i64 = 0;
-  logo: string | null = null;
-  name: string | null = null;
-  prices: Price[] = [];
-  seatCategories: SeatCategory[] = [];
-  seatMapImage: string | null = null;
-  start: i64 = 0;
-  venueCode: string = "";
+  eventId!: i64;
+  id!: i64;
+  logo!: string | null;
+  name!: string | null;
+  prices!: Price[];
+  seatCategories!: SeatCategory[];
+  seatMapImage!: string | null;
+  start!: i64;
+  venueCode!: string;
 }
 
 
 @json
 class CitmEvent {
-  description: string | null = null;
-  id: i64 = 0;
-  logo: string | null = null;
-  name: string = "";
-  subTopicIds: i64[] = [];
-  subjectCode: string | null = null;
-  subtitle: string | null = null;
-  topicIds: i64[] = [];
+  description!: string | null;
+  id!: i64;
+  logo!: string | null;
+  name!: string;
+  subTopicIds!: i64[];
+  subjectCode!: string | null;
+  subtitle!: string | null;
+  topicIds!: i64[];
 }
 
 
 @json
 class Citm {
-  areaNames: Map<string, string> = new Map<string, string>();
-  audienceSubCategoryNames: Map<string, string> = new Map<string, string>();
-  blockNames: Map<string, string> = new Map<string, string>();
-  events: Map<string, CitmEvent> = new Map<string, CitmEvent>();
-  performances: Performance[] = [];
-  seatCategoryNames: Map<string, string> = new Map<string, string>();
-  subTopicNames: Map<string, string> = new Map<string, string>();
-  subjectNames: Map<string, string> = new Map<string, string>();
-  topicNames: Map<string, string> = new Map<string, string>();
-  topicSubTopics: Map<string, i64[]> = new Map<string, i64[]>();
-  venueNames: Map<string, string> = new Map<string, string>();
+  areaNames!: Map<string, string>;
+  audienceSubCategoryNames!: Map<string, string>;
+  blockNames!: Map<string, string>;
+  events!: Map<string, CitmEvent>;
+  performances!: Performance[];
+  seatCategoryNames!: Map<string, string>;
+  subTopicNames!: Map<string, string>;
+  subjectNames!: Map<string, string>;
+  topicNames!: Map<string, string>;
+  topicSubTopics!: Map<string, i64[]>;
+  venueNames!: Map<string, string>;
 }
 
 const prettyJson = readFile(
@@ -88,14 +87,12 @@ const minJson = readFile(
 expect(JSON.parse<Citm>(minJson).performances.length).toBe(243);
 
 const citm = JSON.parse<Citm>(prettyJson);
-const prettyPayloads = new ChangingPayloads(prettyJson);
-const minPayloads = new ChangingPayloads(minJson);
 const out = "";
 
 bench(
   "Deserialize CITM (pretty)",
   () => {
-    blackbox(JSON.parse<Citm>(prettyPayloads.next()));
+    blackbox(JSON.parse<Citm>(prettyJson));
   },
   2000,
   utf8ByteLength(prettyJson),
@@ -105,7 +102,7 @@ dumpToFile("citm_catalog-pretty", "deserialize");
 bench(
   "Deserialize CITM (min)",
   () => {
-    blackbox(JSON.parse<Citm>(minPayloads.next()));
+    blackbox(JSON.parse<Citm>(minJson));
   },
   2000,
   utf8ByteLength(minJson),

assembly/__benches__/classic/citm_catalog.lazy.bench.ts

@@ -17,66 +17,66 @@ import {
 
 @json({ lazy: "auto" })
 class Price {
-  amount: i64 = 0;
-  audienceSubCategoryId: i64 = 0;
-  seatCategoryId: i64 = 0;
+  amount!: i64;
+  audienceSubCategoryId!: i64;
+  seatCategoryId!: i64;
 }
 
 
 @json({ lazy: "auto" })
 class Area {
-  areaId: i64 = 0;
-  blockIds: i64[] = [];
+  areaId!: i64;
+  blockIds!: i64[];
 }
 
 
 @json({ lazy: "auto" })
 class SeatCategory {
-  areas: Area[] = [];
-  seatCategoryId: i64 = 0;
+  areas!: Area[];
+  seatCategoryId!: i64;
 }
 
 
 @json({ lazy: "auto" })
 class Performance {
-  eventId: i64 = 0;
-  id: i64 = 0;
-  logo: string | null = null;
-  name: string | null = null;
-  prices: Price[] = [];
-  seatCategories: SeatCategory[] = [];
-  seatMapImage: string | null = null;
-  start: i64 = 0;
-  venueCode: string = "";
+  eventId!: i64;
+  id!: i64;
+  logo!: string | null;
+  name!: string | null;
+  prices!: Price[];
+  seatCategories!: SeatCategory[];
+  seatMapImage!: string | null;
+  start!: i64;
+  venueCode!: string;
 }
 
 
 @json({ lazy: "auto" })
 class CitmEvent {
-  description: string | null = null;
-  id: i64 = 0;
-  logo: string | null = null;
-  name: string = "";
-  subTopicIds: i64[] = [];
-  subjectCode: string | null = null;
-  subtitle: string | null = null;
-  topicIds: i64[] = [];
+  description!: string | null;
+  id!: i64;
+  logo!: string | null;
+  name!: string;
+  subTopicIds!: i64[];
+  subjectCode!: string | null;
+  subtitle!: string | null;
+  topicIds!: i64[];
 }
 
 
 @json({ lazy: "auto" })
 class Citm {
-  areaNames: Map<string, string> = new Map<string, string>();
-  audienceSubCategoryNames: Map<string, string> = new Map<string, string>();
-  blockNames: Map<string, string> = new Map<string, string>();
-  events: Map<string, CitmEvent> = new Map<string, CitmEvent>();
-  performances: Performance[] = [];
-  seatCategoryNames: Map<string, string> = new Map<string, string>();
-  subTopicNames: Map<string, string> = new Map<string, string>();
-  subjectNames: Map<string, string> = new Map<string, string>();
-  topicNames: Map<string, string> = new Map<string, string>();
-  topicSubTopics: Map<string, i64[]> = new Map<string, i64[]>();
-  venueNames: Map<string, string> = new Map<string, string>();
+  areaNames!: Map<string, string>;
+  audienceSubCategoryNames!: Map<string, string>;
+  blockNames!: Map<string, string>;
+  events!: Map<string, CitmEvent>;
+  performances!: Performance[];
+  seatCategoryNames!: Map<string, string>;
+  subTopicNames!: Map<string, string>;
+  subjectNames!: Map<string, string>;
+  topicNames!: Map<string, string>;
+  topicSubTopics!: Map<string, i64[]>;
+  venueNames!: Map<string, string>;
 }
 
 function touchRoot(root: Citm): f64 {