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tech-log-frontend/tests/unit/bundle-classification.test.ts
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TypeScript

import { describe, expect, it } from "vitest";
import { classifyViteJavascript } from "../../scripts/lib/classify-vite-bundle.ts";
describe("Vite bundle classification", () => {
it("counts transitive static imports as initial and keeps dynamic chunks lazy", () => {
expect(
classifyViteJavascript({
"index.html": {
file: "assets/entry.js",
isEntry: true,
imports: ["_shared.js"],
},
"_shared.js": { file: "assets/shared.js", imports: ["_runtime.js"] },
"_runtime.js": { file: "assets/runtime.js" },
"src/lazy.js": { file: "assets/lazy.js" },
}),
).toEqual({
initialFiles: [
"assets/entry.js",
"assets/runtime.js",
"assets/shared.js",
],
lazyFiles: ["assets/lazy.js"],
missingImports: [],
});
});
it("reports a manifest import that cannot be resolved", () => {
expect(
classifyViteJavascript({
"index.html": {
file: "assets/entry.js",
isEntry: true,
imports: ["_missing.js"],
},
}).missingImports,
).toEqual(["_missing.js"]);
});
});