chore: add prepare script to support npx from GitHub

prepare runs on git installs, enabling users to test unreleased versions with:
  npx github:getappmap/appmap-node#branch myapp.js
prepack now delegates to prepare so yarn pack continues to work.

Author: dividedmind

.github/workflows/ci.yml

@@ -57,7 +57,7 @@ jobs:
         with:
           cache: yarn
       - run: yarn
-      - run: yarn prepack
+      - run: yarn prepare
       - run: yarn test || yarn jest --no-silent --verbose --onlyFailures
       - run: node test/smoketest.mjs
 

package.json

@@ -43,7 +43,8 @@
     "node": ">=18"
   },
   "scripts": {
-    "prepack": "tsc -p tsconfig.build.json",
+    "prepare": "tsc -p tsconfig.build.json",
+    "prepack": "yarn prepare",
     "lint": "eslint src test",
     "test": "jest",
     "watch": "tsc --watch -p tsconfig.build.json"

test/helpers.ts

@@ -203,7 +203,7 @@ function ensureBuilt() {
   try {
     accessSync(probePath);
   } catch {
-    spawnSync("yarn", ["prepack"], { cwd: resolve(__dirname, ".."), stdio: "inherit" });
+    spawnSync("yarn", ["prepare"], { cwd: resolve(__dirname, ".."), stdio: "inherit" });
   }
 }