page.tsx now composes the sections and passes them through SchoolDetailShell
as children, so ~1,300 lines of static markup stop shipping as client
JavaScript. The shell keeps what is genuinely interactive: back link, header
reveal, hero map, compare CTA, sticky nav and scroll-spy.
The scroll-spy already located sections via document.getElementById, so it
works unchanged against server-rendered children.
Charts needed a client wrapper: next/dynamic with ssr:false is illegal in a
Server Component, so components/school/charts.tsx is the boundary that keeps
Chart.js (64 KB gz) lazy and browser-only.
Measured on this build:
- school route client chunk: 8 KB gz (33 KB raw)
- total static JS across all chunks: 380.6 -> 350.7 KB gz
- section markup is absent from every client chunk ("Got their first choice",
"Ofsted reports", "Most deprived" etc. all return 0 hits); shell strings
still present, as expected
- shared baseline unchanged at 172 KB gz -- out of scope, as designed
The 14 characterization tests pass byte-identical to the commit that
introduced them. Only the render helper changed.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
78 lines
2.4 KiB
TypeScript
78 lines
2.4 KiB
TypeScript
/**
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* The single seam between the characterization tests and the component tree.
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*
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* This file is the ONLY thing the server/client split was allowed to change.
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* It now renders the shell + server-sections composition that
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* app/school/[slug]/page.tsx builds, instead of the old monolithic views.
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* Every assertion in schoolDetail.characterization.test.tsx is unchanged —
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* that is the proof the refactor preserved behaviour.
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*/
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import { render } from '@testing-library/react';
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import type { ReactNode } from 'react';
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import { ComparisonProvider } from '@/context/ComparisonProvider';
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import { SchoolDetailShell } from '@/components/school/SchoolDetailShell';
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import { PrimarySchoolSections } from '@/components/school/PrimarySchoolSections';
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import { SecondarySchoolSections } from '@/components/school/SecondarySchoolSections';
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import {
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computeSchoolFlags, buildNavItems,
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computeSecondaryFlags, buildSecondaryNavItems,
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} from '@/lib/schoolSections';
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import { nationalAveragesFixture } from './schoolFixtures';
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// The shell calls useComparison(), which throws outside the provider. In the
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// app this wrapper comes from app/layout.tsx.
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function withProviders(ui: ReactNode) {
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return <ComparisonProvider>{ui}</ComparisonProvider>;
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}
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export function renderSchoolDetail(fixture: any) {
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const flags = computeSchoolFlags(fixture);
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const navItems = buildNavItems(flags, {
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ofsted: fixture.ofsted,
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admissions: fixture.admissions,
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yearlyDataLength: fixture.yearlyData.length,
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});
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return render(
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withProviders(
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<SchoolDetailShell
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{...fixture}
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nationalAvg={nationalAveragesFixture}
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navItems={navItems}
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>
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<PrimarySchoolSections
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{...fixture}
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nationalAvg={nationalAveragesFixture}
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flags={flags}
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/>
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</SchoolDetailShell>,
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),
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);
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}
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export function renderSecondarySchoolDetail(fixture: any) {
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const flags = computeSecondaryFlags(fixture);
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const navItems = buildSecondaryNavItems(flags, {
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ofsted: fixture.ofsted,
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admissions: fixture.admissions,
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yearlyDataLength: fixture.yearlyData.length,
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});
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return render(
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withProviders(
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<SchoolDetailShell
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{...fixture}
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nationalAvg={nationalAveragesFixture}
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navItems={navItems}
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>
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<SecondarySchoolSections
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{...fixture}
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nationalAvg={nationalAveragesFixture}
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flags={flags}
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/>
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</SchoolDetailShell>,
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),
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);
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}
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