Add back the stuff for the source build.

This was done manually because I believe 12.2 was on a branch that never had it.

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "replicache",
+  "name": "@rocicorp/replicache",
   "description": "Realtime sync for any backend stack",
   "version": "12.2.2",
   "repository": "github:rocicorp/replicache",
@@ -73,7 +73,9 @@
     "out/cli.js",
     "out/replicache.d.ts",
     "out/replicache.cjs",
-    "out/replicache.js"
+    "out/replicache.cjs.map",
+    "out/replicache.js",
+    "out/replicache.js.map"
   ],
   "eslintConfig": {
     "extends": "@rocicorp/eslint-config"

tool/build.js

@@ -2,6 +2,7 @@
 
 import * as esbuild from 'esbuild';
 import {makeDefine} from './make-define.js';
+import {readPackageJSON} from './read-package-json.js';
 
 const forBundleSizeDashboard = process.argv.includes('--bundle-sizes');
 const perf = process.argv.includes('--perf');
@@ -53,6 +54,7 @@ async function buildReplicache(options) {
     outfile: 'out/replicache.' + ext,
     entryPoints: ['src/mod.ts'],
     define: await makeDefine(mode, dd31),
+    sourcemap: true,
   });
 }
 
@@ -81,6 +83,11 @@ async function buildCLI() {
   });
 }
 
+async function isRocicorpPackage() {
+  const packageJSON = await readPackageJSON();
+  return packageJSON.name.startsWith('@rocicorp/');
+}
+
 if (perf) {
   await buildMJS({mode: 'release'});
 } else if (forBundleSizeDashboard) {
@@ -94,7 +101,7 @@ if (perf) {
   ]);
 } else {
   let opts = {};
-  if (debug) {
+  if (debug || (await isRocicorpPackage())) {
     opts = {minify: false};
   }
   await Promise.all([buildMJS(opts), buildCJS(opts), buildCLI()]);

tool/read-package-json.js

@@ -0,0 +1,18 @@
+// @ts-check
+
+import {readFile} from 'fs/promises';
+
+/**
+ * @typedef  {{
+ *   [key: string]: any;
+ *   name: string;
+ *   version: string;
+ * }} PackageJSON
+ */
+
+/** @returns {Promise<PackageJSON>} */
+export async function readPackageJSON() {
+  const url = new URL('../package.json', import.meta.url);
+  const s = await readFile(url, 'utf-8');
+  return JSON.parse(s);
+}