mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-11-01 07:33:12 +08:00
Chris Tate
f0f91ac1ff
Without @types/node, every program loaded scriptc-node-fallback.d.ts whole: the console and process globals and 47 Node modules, about 8,100 lines, parsed, bound and checked in every cold build whether or not the program imported them. - The fallback file keeps the globals and the modules they name (console, readline, readline/promises, perf_hooks, tty). Every other module, under both spellings, has its own file in ambient/node-fallback/, which references the files of the modules its declarations name. - A module's file joins the program when one of the program's files names the module in a string literal: imports, requires, import types and JSDoc types all name modules that way. The entry is read before the first program; the program-root discovery passes add modules that other files name. Files are read as tsgo reads them, and the TypeScript libraries and scriptc's own declarations are skipped. - The checks that recognized the fallback file by its path recognize every fallback file.
60 lines
2.5 KiB
TypeScript
60 lines
2.5 KiB
TypeScript
/* Every Node pin names the same release: .node-version (the
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* differential oracle), Dockerfile.sandbox, the compatibility pin, the fetch
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* profile, the docs matrix fallback, and the version the compiled binary
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* reports. */
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import { readFileSync } from "node:fs";
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import { join } from "node:path";
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import { expect, test } from "vitest";
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import { node24FetchCompatProfile } from "../src/compat/fetch-profile.js";
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import { NODE_COMPAT_VERSION } from "../src/frontend/lowering/builtins/process.js";
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import { CRYPTO_CONSTANTS } from "../src/frontend/lowering/crypto-tables.js";
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import { ZLIB_CONSTANTS } from "../src/frontend/lowering/zlib-constants.js";
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const repoRoot = join(import.meta.dirname, "../../..");
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const read = (path: string): string => readFileSync(join(repoRoot, path), "utf8");
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test("the Node pins agree", () => {
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const pinned = read(".node-version").trim();
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const compat = JSON.parse(read("internal/compatibility/node-v24.json")) as {
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version: string;
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tag: string;
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};
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expect(compat.version).toBe(pinned);
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expect(compat.tag).toBe(`v${pinned}`);
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expect(read("Dockerfile.sandbox")).toMatch(new RegExp(`^ARG NODE_VERSION=${pinned}$`, "m"));
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expect(NODE_COMPAT_VERSION).toBe(pinned);
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expect(node24FetchCompatProfile().target.node).toBe(pinned);
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expect(read("packages/runtime/src/scr_lib.c")).toContain(
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`#define SCR_NODE_COMPAT_VERSION "${pinned}"`,
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);
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expect(read("docs/src/components/node-compatibility-matrix.tsx")).toContain(
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`snapshot?.nodeVersion ?? "${pinned}"`,
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);
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});
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test("the crypto.constants declaration matches the baked table", () => {
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const dts = read("packages/compiler/ambient/node-fallback/crypto.d.ts");
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const start = dts.indexOf("export interface CryptoConstants {");
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const body = dts.slice(start, dts.indexOf("\n }\n", start));
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const declared = Object.fromEntries(
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[...body.matchAll(/readonly (\w+): (-?\d+|"[^"]*");/g)].map(([, name, value]) => [
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name!,
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JSON.parse(value!) as number | string,
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]),
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);
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expect(declared).toEqual(CRYPTO_CONSTANTS);
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});
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test("the zlib.constants declaration matches the baked table", () => {
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const dts = read("packages/compiler/ambient/node-fallback/zlib.d.ts");
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const start = dts.indexOf("export interface ZlibConstants {");
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const body = dts.slice(start, dts.indexOf("\n }\n", start));
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const declared = Object.fromEntries(
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[...body.matchAll(/readonly (\w+): (-?\d+|number);/g)].map(([, name, value]) => [
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name!,
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value === "number" ? Infinity : Number(value),
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]),
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);
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expect(declared).toEqual(ZLIB_CONSTANTS);
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});
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