test: Speed up suite by prebundling barrel imports - #77
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Every test file that renders the grid paid ~7s loading modules. All source files import from the igniteui-webcomponents barrel, which re-exports the full component library. Rollup tree-shakes this in the build, but web-test-runner serves unbundled ESM, so the browser fetched 249 modules per test page - banner, card, carousel and i18n-core included, none of which the grid uses. Prebundle the barrel with esbuild, tree-shaken to the 8 runtime symbols src/ imports, and resolve the bare specifier to it. lit stays external so no second copy of the runtime enters the graph. The export list is derived by scanning src/ so it cannot drift. Suite drops from 40.8s to 11.0s.
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Every test file that renders the grid paid ~7s loading modules. All source files import from the igniteui-webcomponents barrel, which re-exports the full component library. Rollup tree-shakes this in the build, but web-test-runner serves unbundled ESM, so the browser fetched 249 modules per test page - banner, card, carousel and i18n-core included, none of which the grid uses.
Prebundle the barrel with esbuild, tree-shaken to the 8 runtime symbols src/ imports, and resolve the bare specifier to it. lit stays external so no second copy of the runtime enters the graph. The export list is derived by scanning src/ so it cannot drift.
Suite drops from 40.8s to 11.0s.