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refactor(tools): narrow memory tool input with a type guard

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Replace the bare `block.input as MemoryCommand` assertions in the
Anthropic example with an isMemoryCommand type guard, so unexpected
tool input is skipped instead of silently mistyped.
This commit is contained in:
rajashidattapy 2026-08-20 00:52:58 +05:30
parent 760f458210
commit fa8ba27b10
1 changed files with 31 additions and 2 deletions
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33
packages/tools/test/anthropic-example.ts
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@ -11,6 +11,27 @@ import {
} from "../src/claude-memory"
import "dotenv/config"
const MEMORY_COMMANDS: readonly string[] = [
"view",
"create",
"str_replace",
"insert",
"delete",
"rename",
]
function isMemoryCommand(input: unknown): input is MemoryCommand {
return (
typeof input === "object" &&
input !== null &&
"command" in input &&
"path" in input &&
typeof input.command === "string" &&
MEMORY_COMMANDS.includes(input.command) &&
typeof input.path === "string"
)
}
/**
* Handle Claude's memory tool calls using the Anthropic SDK
*/
@ -75,7 +96,11 @@ async function chatWithMemoryTool() {
if (block.type === "text") {
console.log("💭", block.text)
} else if (block.type === "tool_use" && block.name === "memory") {
const command = block.input as MemoryCommand
const command = block.input
if (!isMemoryCommand(command)) {
console.log("Skipping unrecognized memory tool input:", command)
continue
}
console.log("🔧 Claude is using memory tool:")
console.log(" Command:", command.command)
console.log(" Path:", command.path)
@ -142,7 +167,11 @@ async function chatWithMemoryTool() {
if (block.type === "text") {
console.log("💭", block.text)
} else if (block.type === "tool_use" && block.name === "memory") {
const command = block.input as MemoryCommand
const command = block.input
if (!isMemoryCommand(command)) {
console.log("Skipping unrecognized memory tool input:", command)
continue
}
console.log("🔧 Claude is using memory tool again:")
console.log(" Command:", command.command)
console.log(" Path:", command.path)