refactor: use build-time version injection instead of createRequire

Replace the runtime createRequire/package.json pattern with tsup's
define option for compile-time version injection. Also anchors the
test regex with $ to prevent false-positive matches.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ckorhonen

src/client.ts

@@ -1,12 +1,10 @@
-import { createRequire } from "node:module"
 import type { OpenSeaClientConfig } from "./types/index.js"
 
-const require = createRequire(import.meta.url)
-const { version } = require("../package.json") as { version: string }
+declare const __VERSION__: string
 
 const DEFAULT_BASE_URL = "https://api.opensea.io"
 const DEFAULT_TIMEOUT_MS = 30_000
-const USER_AGENT = `opensea-cli/${version}`
+const USER_AGENT = `opensea-cli/${__VERSION__}`
 
 export class OpenSeaClient {
   private apiKey: string

test/client.test.ts

@@ -41,7 +41,7 @@ describe("OpenSeaClient", () => {
           method: "GET",
           headers: expect.objectContaining({
             Accept: "application/json",
-            "User-Agent": expect.stringMatching(/^opensea-cli\/\d+\.\d+\.\d+/),
+            "User-Agent": expect.stringMatching(/^opensea-cli\/\d+\.\d+\.\d+$/),
             "x-api-key": "test-key",
           }),
         }),
@@ -96,7 +96,7 @@ describe("OpenSeaClient", () => {
           method: "POST",
           headers: expect.objectContaining({
             Accept: "application/json",
-            "User-Agent": expect.stringMatching(/^opensea-cli\/\d+\.\d+\.\d+/),
+            "User-Agent": expect.stringMatching(/^opensea-cli\/\d+\.\d+\.\d+$/),
             "x-api-key": "test-key",
           }),
         }),
@@ -116,7 +116,7 @@ describe("OpenSeaClient", () => {
           headers: expect.objectContaining({
             Accept: "application/json",
             "Content-Type": "application/json",
-            "User-Agent": expect.stringMatching(/^opensea-cli\/\d+\.\d+\.\d+/),
+            "User-Agent": expect.stringMatching(/^opensea-cli\/\d+\.\d+\.\d+$/),
             "x-api-key": "test-key",
           }),
           body: JSON.stringify({ name: "test" }),

tsup.config.ts

@@ -1,12 +1,20 @@
+import { readFileSync } from "node:fs"
 import { defineConfig } from "tsup"
 
+const pkg = JSON.parse(readFileSync("./package.json", "utf-8")) as {
+  version: string
+}
+
 export default defineConfig([
   {
     entry: { cli: "src/cli.ts" },
     format: ["esm"],
     clean: true,
     sourcemap: true,
     target: "node18",
+    define: {
+      __VERSION__: JSON.stringify(pkg.version),
+    },
     banner: {
       js: "#!/usr/bin/env node",
     },
@@ -17,5 +25,8 @@ export default defineConfig([
     dts: true,
     sourcemap: true,
     target: "node18",
+    define: {
+      __VERSION__: JSON.stringify(pkg.version),
+    },
   },
 ])

vitest.config.ts

@@ -1,6 +1,14 @@
+import { readFileSync } from "node:fs"
 import { defineConfig } from "vitest/config"
 
+const pkg = JSON.parse(readFileSync("./package.json", "utf-8")) as {
+  version: string
+}
+
 export default defineConfig({
+  define: {
+    __VERSION__: JSON.stringify(pkg.version),
+  },
   test: {
     coverage: {
       provider: "v8",