mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-30 07:14:39 +08:00
Chris Tate
3f56576644
- Share frontend loading, package selection, contracts, and FFI parsing between Node and native clients. - Preserve collection layouts and optional method returns while lowering long nullish chains without recursive stack growth. - Rebuild the frontend from TypeScript through native lowering and C emission with matching output.
52 lines
3.0 KiB
TypeScript
52 lines
3.0 KiB
TypeScript
import { execFile } from "node:child_process";
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import { join } from "node:path";
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import { pathToFileURL } from "node:url";
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import { promisify } from "node:util";
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import { expect, test } from "vitest";
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import type { LowerResult } from "../../packages/compiler/src/frontend/lowering/lowerer.js";
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const root = join(import.meta.dirname, "../..");
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test("the complete production frontend lowers with zero rejected statements", async () => {
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// This is the production reachable lowering pass, not a source-only scan
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// or a coverage run that can skip bodies. Run in a child so its synchronous
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// work cannot starve Vitest's worker RPC. Native execution of the complete
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// frontend is a separate bootstrap milestone.
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const frontend = pathToFileURL(join(root, "packages/compiler/src/frontend/")).href;
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const validator = pathToFileURL(join(root, "packages/compiler/src/ir/validate.ts")).href;
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const ffi = pathToFileURL(join(root, "packages/compiler/src/ffi/ffi-manifest.ts")).href;
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const { stdout, stderr } = await promisify(execFile)(process.execPath, [
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"--import", "tsx", "--input-type=module", "--eval",
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`import { loadProgram, checkPreflight } from ${JSON.stringify(frontend + "program-node.ts")};
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import { lowerToIr } from ${JSON.stringify(frontend + "lowering/lowerer.ts")};
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import { validateModule } from ${JSON.stringify(validator)};
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import { loadFfiProfile } from ${JSON.stringify(ffi)};
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const ffi = loadFfiProfile(process.argv[2]);
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if (!ffi.ok) throw new Error(JSON.stringify(ffi.diagnostics));
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const load = loadProgram(process.argv[1]);
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try {
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const preflight = checkPreflight(load);
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if (preflight.length) throw new Error(JSON.stringify(preflight));
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if (load.startupCrash) throw new Error(JSON.stringify(load.startupCrash));
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const result = lowerToIr(load.program, load.entry, load.moduleOrder, {
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dynamic: false, frontendServices: load.services, ffiImports: ffi.profile.functions,
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});
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console.log(JSON.stringify({ stats: result.stats, diagnostics: result.diagnostics, runtimeFences: result.runtimeFences,
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functions: result.module?.functions.length ?? 0,
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validation: result.module ? validateModule(result.module) : null }));
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} finally { load.dispose(); }`,
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join(root, "tests/fixtures/self-hosting/frontend-lowering.ts"),
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join(root, "packages/compiler/native/ts7-process.ffi.json"),
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], { cwd: root, timeout: 900_000, maxBuffer: 8 * 1024 * 1024 });
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expect(stderr).toBe("");
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const result = JSON.parse(stdout) as Pick<LowerResult, "stats" | "diagnostics" | "runtimeFences"> & { functions: number; validation: unknown[] | null };
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expect(result.diagnostics).toEqual([]);
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expect(result.runtimeFences).toEqual([]);
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expect(result.stats.statementsTotal).toBeGreaterThan(50_000);
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expect(result.stats.statementsFailed).toBe(0);
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expect(result.stats.statementsIsland).toBe(0);
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expect(result.stats.functionsSkipped).toBe(0);
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expect(result.functions).toBeGreaterThan(1_000);
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expect(result.validation).toEqual([]);
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}, 930_000);
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