fix: derive User-Agent version from package.json at build time

package.json

@@ -28,7 +28,7 @@
     }
   },
   "scripts": {
-    "build": "tsc",
+    "build": "node scripts/gen-version.mjs && tsc",
     "generate": "openapi-ts",
     "lint": "oxlint .",
     "format": "oxfmt --write .",

scripts/gen-version.mjs

@@ -0,0 +1,18 @@
+// Generate src/low/version.ts from package.json's version so the SDK's
+// User-Agent always reports the published package version. This runs as part of
+// `pnpm build`; the publish workflow sets package.json to the release-tag
+// version before building (tag-driven versioning), so the published bundle
+// carries that version instead of a hand-kept constant that silently drifts.
+import { readFileSync, writeFileSync } from "node:fs";
+import { fileURLToPath } from "node:url";
+
+const root = new URL("..", import.meta.url);
+const pkg = JSON.parse(readFileSync(new URL("package.json", root), "utf8"));
+const out = fileURLToPath(new URL("src/low/version.ts", root));
+
+const body = `// GENERATED by scripts/gen-version.mjs from package.json — do not edit.
+export const SDK_VERSION = ${JSON.stringify(pkg.version)};
+`;
+
+writeFileSync(out, body);
+console.log(`Wrote src/low/version.ts (SDK_VERSION = ${pkg.version})`);

src/low/transport.ts

@@ -29,16 +29,11 @@
 import { errorFromEnvelope } from "./errors.js";
 import type { Asset, AssetFromHashData, Job, PostJobsData } from "./generated/types.gen.js";
 import { iterateSse, type RawEvent } from "./sse.js";
+import { SDK_VERSION } from "./version.js";
 
 const API_PREFIX = "/api/v2";
 const DEFAULT_TIMEOUT_MS = 30_000;
 
-// Mirrors `version` in package.json. Hand-kept in sync: this package builds
-// with plain `tsc` (no bundler/codegen step to inline it), and importing
-// `../../package.json` directly would step outside `tsc`'s configured
-// `rootDir`.
-const SDK_VERSION = "0.1.0";
-
 export interface RequestOptions {
   headers?: Record<string, string>;
   json?: unknown;

src/low/version.ts

@@ -0,0 +1,2 @@
+// GENERATED by scripts/gen-version.mjs from package.json — do not edit.
+export const SDK_VERSION = "0.1.0";