mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-28 06:53:42 +08:00
Chris TateandAlbert
31f268be2b
* feat: support wasm32-wasi as a production target - Add production LLVM WASI codegen with a 32-bit ABI, coroutines, and dynamic modules - Integrate WASI builds and execution into the CLI with capability diagnostics - Add differential coverage and document the fourth production target Co-authored-by: Albert <57402359+bulatovv@users.noreply.github.com> * fix: address wasm target review findings * fix WASI guest paths and fetch alias detection * fix WASI async bridge and fetch detection --------- Co-authored-by: Albert <57402359+bulatovv@users.noreply.github.com>
53 lines
2.0 KiB
TypeScript
53 lines
2.0 KiB
TypeScript
import { tmpdir } from "node:os";
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import { buildTargetPlatform, wasiGuestPath } from "@scriptc/compiler";
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/** Default executable filename for the build target. Explicit --out paths
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* stay exact; only scriptc's generated default needs the Windows PE suffix. */
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export function defaultExecutableName(stem: string, platform: string = buildTargetPlatform()): string {
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if (platform === "win32") return `${stem}.exe`;
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if (platform === "wasi") return `${stem}.wasm`;
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return stem;
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}
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/** Host paths exposed by `scriptc run` to a WASI Preview 1 module. Guest
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* `/tmp` maps to the host's real platform temp directory instead of assuming
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* the POSIX spelling exists (notably false on Windows). */
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export function wasiPreopens(
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cwd: string = process.cwd(),
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hostTmp: string = tmpdir(),
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): Record<string, string> {
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return { "/": cwd, "/tmp": hostTmp };
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}
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/** Environment inherited by a WASI module. Host-absolute directory values
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* must not claim paths outside the guest namespace: `/` is the module's
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* capability root/home/cwd and `/tmp` is its writable temporary directory. */
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export function wasiEnvironment(
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env: NodeJS.ProcessEnv = process.env,
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cwd: string = process.cwd(),
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hostTmp: string = tmpdir(),
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): Record<string, string> {
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const guest = Object.fromEntries(
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Object.entries(env).filter((entry): entry is [string, string] => entry[1] !== undefined),
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);
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guest["PWD"] = "/";
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guest["HOME"] = "/";
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guest["TMPDIR"] = "/tmp";
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if (guest["USERPROFILE"] !== undefined) guest["USERPROFILE"] = "/";
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if (guest["TMP"] !== undefined) guest["TMP"] = "/tmp";
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if (guest["TEMP"] !== undefined) guest["TEMP"] = "/tmp";
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// These optional shell/package-manager paths retain their meaning only
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// when they fall under a capability the runner actually exposes.
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for (const key of ["OLDPWD", "INIT_CWD"] as const) {
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const value = guest[key];
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if (value === undefined) continue;
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const mapped = wasiGuestPath(value, cwd, hostTmp);
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if (mapped === null) delete guest[key];
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else guest[key] = mapped;
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}
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return guest;
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}
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