Update to claude-agent-sdk 0.1.51 (#178 )

Adds support for Opus 4.5
More forgiving unreachable (#173 )
2026-11-05 17:01:44 +00:00 · 2025-11-24 23:24:34 +01:00 · 2025-11-24 12:17:11 +00:00
7 changed files with 132 additions and 393 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog

+## 0.10.8
+
+- Update to @anthropic-ai/claude-agent-sdk@v0.1.51 (adds support for Opus 4.5)
+
 ## 0.10.7

 - Fix read/edit tool error handling so upstream errors surface
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,17 +1,17 @@
 {
  "name": "@zed-industries/claude-code-acp",
-  "version": "0.10.7",
+  "version": "0.10.8",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
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      "name": "@zed-industries/claude-code-acp",
-      "version": "0.10.7",
+      "version": "0.10.8",
      "license": "Apache-2.0",
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-        "@anthropic-ai/claude-code": "2.0.50",
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+        "@anthropic-ai/claude-code": "2.0.51",
        "@modelcontextprotocol/sdk": "1.22.0",
        "diff": "8.0.2",
        "uuid": "13.0.0"
@@ -20,11 +20,11 @@
        "claude-code-acp": "dist/index.js"
      },
      "devDependencies": {
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@@ -45,9 +45,9 @@
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      "license": "SEE LICENSE IN README.md",
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@@ -65,9 +65,9 @@
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      "license": "SEE LICENSE IN README.md",
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@@ -85,9 +85,9 @@
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-        "fill-range": "^7.1.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
    "node_modules/bytes": {
      "version": "3.1.2",
      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
@@ -2812,36 +2764,6 @@
      "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
      "license": "MIT"
    },
-    "node_modules/fast-glob": {
-      "version": "3.3.3",
-      "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-3.3.3.tgz",
-      "integrity": "sha512-7MptL8U0cqcFdzIzwOTHoilX9x5BrNqye7Z/LuC7kCMRio1EMSyqRK3BEAUD7sXRq4iT4AzTVuZdhgQ2TCvYLg==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@nodelib/fs.stat": "^2.0.2",
-        "@nodelib/fs.walk": "^1.2.3",
-        "glob-parent": "^5.1.2",
-        "merge2": "^1.3.0",
-        "micromatch": "^4.0.8"
-      },
-      "engines": {
-        "node": ">=8.6.0"
-      }
-    },
-    "node_modules/fast-glob/node_modules/glob-parent": {
-      "version": "5.1.2",
-      "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-5.1.2.tgz",
-      "integrity": "sha512-AOIgSQCepiJYwP3ARnGx+5VnTu2HBYdzbGP45eLw1vr3zB3vZLeyed1sC9hnbcOc9/SrMyM5RPQrkGz4aS9Zow==",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "is-glob": "^4.0.1"
-      },
-      "engines": {
-        "node": ">= 6"
-      }
-    },
    "node_modules/fast-json-stable-stringify": {
      "version": "2.1.0",
      "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
@@ -2872,14 +2794,22 @@
      ],
      "license": "BSD-3-Clause"
    },
-    "node_modules/fastq": {
-      "version": "1.19.1",
-      "resolved": "https://registry.npmjs.org/fastq/-/fastq-1.19.1.tgz",
-      "integrity": "sha512-GwLTyxkCXjXbxqIhTsMI2Nui8huMPtnxg7krajPJAjnEG/iiOS7i+zCtWGZR9G0NBKbXKh6X9m9UIsYX/N6vvQ==",
+    "node_modules/fdir": {
+      "version": "6.5.0",
+      "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
+      "integrity": "sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg==",
      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "reusify": "^1.0.4"
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.0.0"
+      },
+      "peerDependencies": {
+        "picomatch": "^3 || ^4"
+      },
+      "peerDependenciesMeta": {
+        "picomatch": {
+          "optional": true
+        }
      }
    },
    "node_modules/fflate": {
@@ -2902,19 +2832,6 @@
        "node": ">=16.0.0"
      }
    },
-    "node_modules/fill-range": {
-      "version": "7.1.1",
-      "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
-      "integrity": "sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "to-regex-range": "^5.0.1"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
    "node_modules/finalhandler": {
      "version": "2.1.0",
      "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-2.1.0.tgz",
@@ -3149,15 +3066,19 @@
      }
    },
    "node_modules/iconv-lite": {
-      "version": "0.6.3",
-      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
-      "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.7.0.tgz",
+      "integrity": "sha512-cf6L2Ds3h57VVmkZe+Pn+5APsT7FpqJtEhhieDCvrE2MK5Qk9MyffgQyuxQTm6BChfeZNtcOLHp9IcWRVcIcBQ==",
      "license": "MIT",
      "dependencies": {
        "safer-buffer": ">= 2.1.2 < 3.0.0"
      },
      "engines": {
        "node": ">=0.10.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
      }
    },
    "node_modules/ignore": {
@@ -3235,16 +3156,6 @@
        "node": ">=0.10.0"
      }
    },
-    "node_modules/is-number": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
-      "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=0.12.0"
-      }
-    },
    "node_modules/is-promise": {
      "version": "4.0.0",
      "resolved": "https://registry.npmjs.org/is-promise/-/is-promise-4.0.0.tgz",
@@ -3398,30 +3309,6 @@
        "url": "https://github.com/sponsors/sindresorhus"
      }
    },
-    "node_modules/merge2": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/merge2/-/merge2-1.4.1.tgz",
-      "integrity": "sha512-8q7VEgMJW4J8tcfVPy8g09NcQwZdbwFEqhe/WZkoIzjn/3TGDwtOCYtXGxA3O8tPzpczCCDgv+P2P5y00ZJOOg==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">= 8"
-      }
-    },
-    "node_modules/micromatch": {
-      "version": "4.0.8",
-      "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.8.tgz",
-      "integrity": "sha512-PXwfBhYu0hBCPw8Dn0E+WDYb7af3dSLVWKi3HGv84IdF4TyFoC0ysxFd0Goxw7nSv4T/PzEJQxsYsEiFCKo2BA==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "braces": "^3.0.3",
-        "picomatch": "^2.3.1"
-      },
-      "engines": {
-        "node": ">=8.6"
-      }
-    },
    "node_modules/mime-db": {
      "version": "1.54.0",
      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.54.0.tgz",
@@ -3672,13 +3559,14 @@
      "license": "ISC"
    },
    "node_modules/picomatch": {
-      "version": "2.3.1",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
-      "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
+      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
      "dev": true,
      "license": "MIT",
+      "peer": true,
      "engines": {
-        "node": ">=8.6"
+        "node": ">=12"
      },
      "funding": {
        "url": "https://github.com/sponsors/jonschlinkert"
@@ -3786,27 +3674,6 @@
        "url": "https://github.com/sponsors/ljharb"
      }
    },
-    "node_modules/queue-microtask": {
-      "version": "1.2.3",
-      "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
-      "integrity": "sha512-NuaNSa6flKT5JaSYQzJok04JzTL1CA6aGhv5rfLW3PgqA+M2ChpZQnAC8h8i4ZFkBS8X5RqkDBHA7r4hej3K9A==",
-      "dev": true,
-      "funding": [
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/feross"
-        },
-        {
-          "type": "patreon",
-          "url": "https://www.patreon.com/feross"
-        },
-        {
-          "type": "consulting",
-          "url": "https://feross.org/support"
-        }
-      ],
-      "license": "MIT"
-    },
    "node_modules/range-parser": {
      "version": "1.2.1",
      "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
@@ -3831,22 +3698,6 @@
        "node": ">= 0.10"
      }
    },
-    "node_modules/raw-body/node_modules/iconv-lite": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.7.0.tgz",
-      "integrity": "sha512-cf6L2Ds3h57VVmkZe+Pn+5APsT7FpqJtEhhieDCvrE2MK5Qk9MyffgQyuxQTm6BChfeZNtcOLHp9IcWRVcIcBQ==",
-      "license": "MIT",
-      "dependencies": {
-        "safer-buffer": ">= 2.1.2 < 3.0.0"
-      },
-      "engines": {
-        "node": ">=0.10.0"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/express"
-      }
-    },
    "node_modules/require-from-string": {
      "version": "2.0.2",
      "resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-2.0.2.tgz",
@@ -3866,17 +3717,6 @@
        "node": ">=4"
      }
    },
-    "node_modules/reusify": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.1.0.tgz",
-      "integrity": "sha512-g6QUff04oZpHs0eG5p83rFLhHeV00ug/Yf9nZM6fLeUrPguBTkTQOdpAWWspMh55TZfVQDPaN3NQJfbVRAxdIw==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "iojs": ">=1.0.0",
-        "node": ">=0.10.0"
-      }
-    },
    "node_modules/rollup": {
      "version": "4.53.3",
      "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.53.3.tgz",
@@ -3935,30 +3775,6 @@
        "node": ">= 18"
      }
    },
-    "node_modules/run-parallel": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.2.0.tgz",
-      "integrity": "sha512-5l4VyZR86LZ/lDxZTR6jqL8AFE2S0IFLMP26AbjsLVADxHdhB/c0GUsH+y39UfCi3dzz8OlQuPmnaJOMoDHQBA==",
-      "dev": true,
-      "funding": [
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/feross"
-        },
-        {
-          "type": "patreon",
-          "url": "https://www.patreon.com/feross"
-        },
-        {
-          "type": "consulting",
-          "url": "https://feross.org/support"
-        }
-      ],
-      "license": "MIT",
-      "dependencies": {
-        "queue-microtask": "^1.2.2"
-      }
-    },
    "node_modules/safer-buffer": {
      "version": "2.1.2",
      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
@@ -4226,38 +4042,6 @@
        "url": "https://github.com/sponsors/SuperchupuDev"
      }
    },
-    "node_modules/tinyglobby/node_modules/fdir": {
-      "version": "6.5.0",
-      "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
-      "integrity": "sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=12.0.0"
-      },
-      "peerDependencies": {
-        "picomatch": "^3 || ^4"
-      },
-      "peerDependenciesMeta": {
-        "picomatch": {
-          "optional": true
-        }
-      }
-    },
-    "node_modules/tinyglobby/node_modules/picomatch": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
-      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
-      "dev": true,
-      "license": "MIT",
-      "peer": true,
-      "engines": {
-        "node": ">=12"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/jonschlinkert"
-      }
-    },
    "node_modules/tinyrainbow": {
      "version": "3.0.3",
      "resolved": "https://registry.npmjs.org/tinyrainbow/-/tinyrainbow-3.0.3.tgz",
@@ -4268,19 +4052,6 @@
        "node": ">=14.0.0"
      }
    },
-    "node_modules/to-regex-range": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
-      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "is-number": "^7.0.0"
-      },
-      "engines": {
-        "node": ">=8.0"
-      }
-    },
    "node_modules/toidentifier": {
      "version": "1.0.1",
      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
@@ -4547,38 +4318,6 @@
        }
      }
    },
-    "node_modules/vite/node_modules/fdir": {
-      "version": "6.5.0",
-      "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
-      "integrity": "sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=12.0.0"
-      },
-      "peerDependencies": {
-        "picomatch": "^3 || ^4"
-      },
-      "peerDependenciesMeta": {
-        "picomatch": {
-          "optional": true
-        }
-      }
-    },
-    "node_modules/vite/node_modules/picomatch": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
-      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
-      "dev": true,
-      "license": "MIT",
-      "peer": true,
-      "engines": {
-        "node": ">=12"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/jonschlinkert"
-      }
-    },
    "node_modules/vitest": {
      "version": "4.0.13",
      "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.0.13.tgz",
@@ -4662,19 +4401,6 @@
        }
      }
    },
-    "node_modules/vitest/node_modules/picomatch": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
-      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=12"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/jonschlinkert"
-      }
-    },
    "node_modules/which": {
      "version": "2.0.2",
      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
  "publishConfig": {
    "access": "public"
  },
-  "version": "0.10.7",
+  "version": "0.10.8",
  "description": "An ACP-compatible coding agent powered by the Claude Code SDK (TypeScript)",
  "main": "dist/lib.js",
  "bin": {
@@ -52,18 +52,18 @@
  "license": "Apache-2.0",
  "dependencies": {
    "@agentclientprotocol/sdk": "0.5.1",
-    "@anthropic-ai/claude-agent-sdk": "0.1.50",
-    "@anthropic-ai/claude-code": "2.0.50",
+    "@anthropic-ai/claude-agent-sdk": "0.1.51",
+    "@anthropic-ai/claude-code": "2.0.51",
    "@modelcontextprotocol/sdk": "1.22.0",
    "diff": "8.0.2",
    "uuid": "13.0.0"
  },
  "devDependencies": {
-    "@anthropic-ai/sdk": "0.70.1",
+    "@anthropic-ai/sdk": "0.71.0",
    "@types/node": "24.10.1",
    "@types/uuid": "10.0.0",
-    "@typescript-eslint/eslint-plugin": "8.47.0",
-    "@typescript-eslint/parser": "8.47.0",
+    "@typescript-eslint/eslint-plugin": "8.48.0",
+    "@typescript-eslint/parser": "8.48.0",
    "@vitest/ui": "4.0.13",
    "eslint": "9.39.1",
    "eslint-config-prettier": "10.1.8",
--- a/src/acp-agent.ts
+++ b/src/acp-agent.ts
@@ -393,6 +393,7 @@ export class ClaudeAcpAgent implements Agent {
              break;
            default:
              unreachable(message);
+              break;
          }
          break;
        case "result": {
@@ -430,6 +431,7 @@ export class ClaudeAcpAgent implements Agent {
              return { stopReason: "max_turn_requests" };
            default:
              unreachable(message);
+              break;
          }
          break;
        }
@@ -514,6 +516,7 @@ export class ClaudeAcpAgent implements Agent {
          break;
        default:
          unreachable(message);
+          break;
      }
    }
    throw new Error("Session did not end in result");
@@ -967,6 +970,7 @@ export function toAcpNotifications(
      }

      case "tool_result":
+      case "tool_search_tool_result":
      case "web_fetch_tool_result":
      case "web_search_tool_result":
      case "code_execution_tool_result":
@@ -1008,6 +1012,7 @@ export function toAcpNotifications(

      default:
        unreachable(chunk);
+        break;
    }
    if (update) {
      output.push({ sessionId, update });
@@ -1053,6 +1058,7 @@ export function streamEventToAcpNotifications(

    default:
      unreachable(event);
+      return [];
  }
 }

--- a/src/mcp-server.ts
+++ b/src/mcp-server.ts
@@ -582,7 +582,8 @@ In sessions with ${toolNames.killShell} always use it instead of KillShell.`,
              content: [{ type: "text", text: "Command killed by timeout." }],
            };
          default: {
-            return unreachable(bgTerm);
+            unreachable(bgTerm);
+            throw new Error("Unexpected background terminal status");
          }
        }
      },
--- a/src/tools.ts
+++ b/src/tools.ts
@@ -6,6 +6,7 @@ import {
  BetaCodeExecutionToolResultBlockParam,
  BetaRequestMCPToolResultBlockParam,
  BetaTextEditorCodeExecutionToolResultBlockParam,
+  BetaToolSearchToolResultBlockParam,
  BetaWebFetchToolResultBlockParam,
  BetaWebSearchToolResultBlockParam,
 } from "@anthropic-ai/sdk/resources/beta.mjs";
@@ -404,7 +405,8 @@ export function toolUpdateFromToolResult(
    | BetaCodeExecutionToolResultBlockParam
    | BetaBashCodeExecutionToolResultBlockParam
    | BetaTextEditorCodeExecutionToolResultBlockParam
-    | BetaRequestMCPToolResultBlockParam,
+    | BetaRequestMCPToolResultBlockParam
+    | BetaToolSearchToolResultBlockParam,
  toolUse: any | undefined,
 ): ToolUpdate {
  switch (toolUse?.name) {
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -75,14 +75,14 @@ export function nodeToWebReadable(nodeStream: Readable): ReadableStream<Uint8Arr
  });
 }

-export function unreachable(value: never): never {
+export function unreachable(value: never) {
  let valueAsString;
  try {
    valueAsString = JSON.stringify(value);
  } catch {
    valueAsString = value;
  }
-  throw new Error(`Unexpected case: ${valueAsString}`);
+  console.error(`Unexpected case: ${valueAsString}`);
 }

 export function sleep(time: number): Promise<void> {