Press n or j to go to the next uncovered block, b, p or k for the previous block.
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function asErrorText(value: unknown): string {
Eif (typeof value === "string") return value;
if (typeof value !== "object" || value === null || Array.isArray(value)) return "";
const obj = value as Record<string, unknown>;
const message =
(typeof obj.message === "string" && obj.message) ||
(typeof obj.error === "string" && obj.error) ||
(typeof obj.code === "string" && obj.code) ||
"";
Iif (message) return message;
try {
return JSON.stringify(obj);
} catch {
return "";
}
}
function printToolResult(block: Record<string, unknown>): void {
const isError = block.is_error === true;
let text = "";
if (typeof block.content === "string") {
text = block.content;
} else if (EArray.isArray(block.content)) {
const parts: string[] = [];
for (const part of block.content) {
if (typeof part !== "object" || part === null || Array.isArray(part)) continue;
const record = part as Record<string, unknown>;
if (typeof record.text === "string") parts.push(record.text);
}
text = parts.join("\n");
}
console.log((isError ? pc.red : pc.cyan)(`tool_result${isError ? " (error)" : ""}`));
Eif (text) {
console.log((isError ? pc.red : pc.gray)(text));
}
}
export function printClaudeStreamEvent(raw: string, debug: boolean): void {
const line = raw.trim();
if (!line) return;
let parsed: Record<string, unknown> | null = null;
try {
parsed = JSON.parse(line) as Record<string, unknown>;
} catch {
console.log(line);
return;
}
const type = typeof parsed.type === "string" ? parsed.type : "";
if (type === "system" && parsed.subtype === "init") {
const model = typeof parsed.model === "string" ? parsed.model : "unknown";
const sessionId = typeof parsed.session_id === "string" ? parsed.session_id : "";
console.log(pc.blue(`Claude initialized (model: ${model}${sessionId ? `, session: ${sessionId}` : ""})`));
return;
}
if (type === "assistant") {
const message =
typeof parsed.message === "object" && parsed.message !== null && !Array.isArray(parsed.message)
? (parsed.message as Record<string, unknown>)
: {};
const content = Array.isArray(message.content) ? message.content : [];
for (const blockRaw of content) {
Iif (typeof blockRaw !== "object" || blockRaw === null || Array.isArray(blockRaw)) continue;
const block = blockRaw as Record<string, unknown>;
const blockType = typeof block.type === "string" ? block.type : "";
if (blockType === "text") {
const text = typeof block.text === "string" ? block.text : "";
Eif (text) console.log(pc.green(`assistant: ${text}`));
} else if (blockType === "thinking") {
const text = typeof block.thinking === "string" ? block.thinking : "";
Eif (text) console.log(pc.gray(`thinking: ${text}`));
} else if (EblockType === "tool_use") {
const name = typeof block.name === "string" ? block.name : "unknown";
console.log(pc.yellow(`tool_call: ${name}`));
Eif (block.input !== undefined) {
console.log(pc.gray(JSON.stringify(block.input, null, 2)));
}
}
}
return;
}
if (type === "user") {
const message =
typeof parsed.message === "object" && parsed.message !== null && !Array.isArray(parsed.message)
? (parsed.message as Record<string, unknown>)
: {};
const content = Array.isArray(message.content) ? message.content : [];
for (const blockRaw of content) {
Iif (typeof blockRaw !== "object" || blockRaw === null || Array.isArray(blockRaw)) continue;
const block = blockRaw as Record<string, unknown>;
Eif (typeof block.type === "string" && block.type === "tool_result") {
printToolResult(block);
}
}
return;
}
if (type === "result") {
const usage =
typeof parsed.usage === "object" && parsed.usage !== null && !Array.isArray(parsed.usage)
? (parsed.usage as Record<string, unknown>)
: {};
const input = Number(usage.input_tokens ?? 0);
const output = Number(usage.output_tokens ?? 0);
const cached = Number(usage.cache_read_input_tokens ?? 0);
const cost = Number(parsed.total_cost_usd ?? 0);
const subtype = typeof parsed.subtype === "string" ? parsed.subtype : "";
const isError = parsed.is_error === true;
const resultText = typeof parsed.result === "string" ? parsed.result : "";
if (resultText) {
console.log(pc.green("result:"));
console.log(resultText);
}
const errors = Array.isArray(parsed.errors) ? parsed.errors.map(asErrorText).filter(Boolean) : [];
if (subtype.startsWith("error") || isError || errors.length > 0) {
console.log(pc.red(`claude_result: subtype=${subtype || "unknown"} is_error=${isError ? "true" : "false"}`));
Eif (errors.length > 0) {
console.log(pc.red(`claude_errors: ${errors.join(" | ")}`));
}
}
console.log(
pc.blue(
`tokens: in=${Number.isFinite(input) ? input : 0} out=${Number.isFinite(output) ? output : 0} cached=${Number.isFinite(cached) ? cached : 0} cost=$${Number.isFinite(cost) ? cost.toFixed(6) : "0.000000"}`,
),
);
return;
}
if (debug) {
console.log(pc.gray(line));
}
}
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