mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-22 05:59:31 +08:00
Chris Tate
6162354076
- The bundler-CJS rewrite erases recognized __toESM(require("x")) wrappers — module-scope bindings, the `, 1` node-mode variant, inline member reads — down to the bare require at its original offsets; .default accesses pad to the binding where Node's answer is the module (plain-CJS targets, node mode) and stay member reads for __esModule-stamped targets, decided by a require-resolution probe over the target's shipped source (forwarding chains followed)
- Interop the recognizer cannot finish — deviant helper text, escaping interop objects, non-literal arguments, ESM-output calls — answers { degrade }: the fs shadow reports the package as an offender with a note naming the construct and the fallback loop islands it, never a failed build and never the silent alternative (a live helper chain's `var __create = Object.create;` fences at module load while the report claims static); auto and explicit opt-ins share the path
- Bare requires of opted-in packages now behave like relative ones end to end: requireInitStmt emits the dep's inline %init (previously the module never initialized before its exports were read), and cjsLocalModuleBindingOf/resolveValueSymbol resolve member reads and namespace method calls through the npm-static dep's export table
- Erased wrappers join the neutralize set so the helper sweep drops the whole dead chain, hoisted canonical-table texts copied off the source drop .default on module-valued bindings exactly like the pads do, and a file with interop pads but no canonical table still rewrites pads-only
- Fixtures gtcore/gtwrap/gtdrift with cases 2556-toesm-external (byte-matches Node across both dep shapes and the comma-call spelling) and 2557-toesm-drift (construct-naming degrade under explicit and auto opt-ins), excluded from the flagless island lane like the 246x family
77 lines
3.2 KiB
TypeScript
77 lines
3.2 KiB
TypeScript
/* The npm differential case table — npm.test.ts's list, extracted so the
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* Linux lane runs the IDENTICAL cases (same entries, same argv lists)
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* against the in-container Linux Node oracle. The fixture node_modules
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* are COMMITTED TEST DATA; binaries embed the package sources at build
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* time, the Node lane resolves them from the repo mount. */
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import { globSync } from "node:fs";
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import { join } from "node:path";
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export interface NpmCase {
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name: string;
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entry: string;
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/** Every argv list runs both sides; default: one run with no args. */
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argvs?: string[][];
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}
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export function npmCases(fixturesRoot: string): NpmCase[] {
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return [
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...globSync(join(fixturesRoot, "npm/cases/*/main.ts"))
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.sort()
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// 2465-2469 and 2556-2557 are the --npm-static bundler-emitted-CJS
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// cases (npm-static.test.ts drives them with the opt-in): their
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// consumers exercise the static rewrite's surface (lexer-visible
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// names the shipped .d.ts never declares, the __toESM interop
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// family), so they stay out of the flagless island lane by design.
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.filter((entry) => !/\/(246[5-9]|255[67])-[^/]+\/main\.ts$/.test(entry))
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.map((entry) => ({ name: entry.split("/").at(-2)!, entry })),
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{
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// THE acceptance test: a calculator CLI on the real commander package
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// (pinned in the fixture; see its README), across the happy paths,
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// --version/--help (island process.exit), and the error exits.
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name: "commander-calc",
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entry: join(fixturesRoot, "commander-calc/calc.ts"),
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argvs: [
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["add", "2", "3"],
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["sub", "10", "4.25"],
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["mul", "4", "2.5"],
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["div", "9", "2"],
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["add", "0.1", "0.2"],
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["add", "1e3", "-0.5"],
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// The typed async action (string|undefined + options record + async
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// body): omitted argument -> the undefined arm; option flags ->
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// record fields (missing ones take their undefined arms); the
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// trailing Command argument drops.
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["echo", "hello"],
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["echo"],
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["echo", "hello", "--upper"],
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["echo", "hello", "-p", "say: "],
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["echo", "--upper", "-p", "p: ", "mixed"],
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["--version"],
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["--help"],
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["add", "2"], // missing argument: usage error, exit 1
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["boom"], // unknown command: suggestion error, exit 1
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[], // no command: help to stderr, exit 1
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// The rejecting async action under plain parse(): nobody observes
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// the rejection — the unhandled-rejection report fires, exit 1.
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["fail", "flat tire"],
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],
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},
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{
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// The classic CLI ENTRY LINE: parseAsync's engine promise bridges into a
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// static one; the rejecting async action reaches the inline .catch
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// handler (typed-catch narrowing, stderr message, exit 1) — the full
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// round trip through BOTH promise bridges (the action's static
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// promise wraps into the engine, commander's result promise bridges
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// back out).
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name: "commander-calc-async",
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entry: join(fixturesRoot, "commander-calc/calc-async.ts"),
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argvs: [
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["double", "21"],
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["fail", "flat tire"],
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["--help"],
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["boom"], // unknown command: island process.exit path, exit 1
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],
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},
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];
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}
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