chore(types): use cosmic-proto

Agoric · May 28, 2024 · c123dc9 · c123dc9
1 parent f537e02
commit c123dc9
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Showing 4 changed files with 726 additions and 6 deletions.
diff --git a/packages/synthetic-chain/package.json b/packages/synthetic-chain/package.json
@@ -2,9 +2,7 @@
   "name": "@agoric/synthetic-chain",
   "version": "0.1.0",
   "description": "Utilities to build a chain and test proposals atop it",
-  "bin": {
-    "synthetic-chain": "dist/cli/cli.js"
-  },
+  "bin": "dist/cli/cli.js",
   "main": "./dist/lib/index.js",
   "type": "module",
   "module": "./dist/lib/index.js",
@@ -29,6 +27,7 @@
     "execa": "^8.0.1"
   },
   "devDependencies": {
+    "@agoric/cosmic-proto": "^0.4.1-dev-c5284e4.0",
     "@types/better-sqlite3": "^7.6.9",
     "@types/node": "^18.19.14",
     "ava": "^5.3.1",

diff --git a/packages/synthetic-chain/src/lib/vstorage.js b/packages/synthetic-chain/src/lib/vstorage.js
@@ -0,0 +1,37 @@
+import { assert, Fail } from './assert.js';
+
+const { freeze: harden } = Object; // XXX
+
+// from '@agoric/internal/src/lib-chainStorage.js';
+const isStreamCell = cell =>
+  cell &&
+  typeof cell === 'object' &&
+  Array.isArray(cell.values) &&
+  typeof cell.blockHeight === 'string' &&
+  /^0$|^[1-9][0-9]*$/.test(cell.blockHeight);
+harden(isStreamCell);
+
+/**
+ * Extract one value from a the vstorage stream cell in a QueryDataResponse
+ *
+ * @param {import('@agoric/cosmic-proto/dist/codegen/agoric/vstorage/query.js').QueryDataResponse} data
+ * @param {number} [index] index of the desired value in a deserialized stream cell
+ */
+export const extractStreamCellValue = (data, index = -1) => {
+  const { value: serialized } = data;
+
+  serialized.length > 0 || Fail`no StreamCell values: ${data}`;
+
+  const streamCell = JSON.parse(serialized);
+  if (!isStreamCell(streamCell)) {
+    throw Fail`not a StreamCell: ${streamCell}`;
+  }
+
+  const { values } = streamCell;
+  values.length > 0 || Fail`no StreamCell values: ${streamCell}`;
+
+  const value = values.at(index);
+  assert.typeof(value, 'string');
+  return value;
+};
+harden(extractStreamCellValue);
diff --git a/packages/synthetic-chain/tsconfig.json b/packages/synthetic-chain/tsconfig.json
@@ -5,8 +5,8 @@
         "checkJs": false, // opt in
         "strict": true,
         "maxNodeModuleJsDepth": 2,
-        "module": "NodeNext",
-        "moduleResolution": "nodenext",
+        "module": "ES2022",
+        "moduleResolution": "Node",
         "noEmit": true,
         "target": "ESNext"
     },