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andrewgross/claude_code_thinking.js

Created August 18, 2025 15:02
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claude_code_thinking.js
// Thinking token levels
const THINK_LEVEL = {
HIGHEST: 31999,
MIDDLE: 10000,
BASIC: 4000,
NONE: 0,
};
// Language cues for thinking intensity
const THINK_CUES = {
english: {
HIGHEST: [
{ pattern: "think harder", needsWordBoundary: true },
{ pattern: "think intensely", needsWordBoundary: true },
{ pattern: "think longer", needsWordBoundary: true },
{ pattern: "think really hard", needsWordBoundary: true },
{ pattern: "think super hard", needsWordBoundary: true },
{ pattern: "think very hard", needsWordBoundary: true },
{ pattern: "ultrathink", needsWordBoundary: true },
],
MIDDLE: [
{ pattern: "think about it", needsWordBoundary: true },
{ pattern: "think a lot", needsWordBoundary: true },
{ pattern: "think deeply", needsWordBoundary: true },
{ pattern: "think hard", needsWordBoundary: true },
{ pattern: "think more", needsWordBoundary: true },
{ pattern: "megathink", needsWordBoundary: true },
],
BASIC: [{ pattern: "think", needsWordBoundary: true }],
NONE: [],
},
japanese: {
HIGHEST: [{ pattern: "熟考" }, { pattern: "深く考えて" }, { pattern: "しっかり考えて" }],
MIDDLE: [{ pattern: "もっと考えて" }, { pattern: "たくさん考えて" }, { pattern: "よく考えて" }, { pattern: "長考" }],
BASIC: [{ pattern: "考えて" }],
NONE: [],
},
chinese: {
HIGHEST: [{ pattern: "多想一会" }, { pattern: "深思" }, { pattern: "仔细思考" }],
MIDDLE: [{ pattern: "多想想" }, { pattern: "好好想" }],
BASIC: [{ pattern: "想" }, { pattern: "思考" }],
NONE: [],
},
spanish: {
HIGHEST: [
{ pattern: "piensa más", needsWordBoundary: true },
{ pattern: "piensa mucho", needsWordBoundary: true },
{ pattern: "piensa profundamente", needsWordBoundary: true },
],
MIDDLE: [{ pattern: "piensa", needsWordBoundary: true }],
BASIC: [
{ pattern: "pienso", needsWordBoundary: true },
{ pattern: "pensando", needsWordBoundary: true },
],
NONE: [],
},
french: {
HIGHEST: [
{ pattern: "réfléchis plus", needsWordBoundary: true },
{ pattern: "réfléchis beaucoup", needsWordBoundary: true },
{ pattern: "réfléchis profondément", needsWordBoundary: true },
],
MIDDLE: [{ pattern: "réfléchis", needsWordBoundary: true }],
BASIC: [
{ pattern: "pense", needsWordBoundary: true },
{ pattern: "réfléchir", needsWordBoundary: true },
],
NONE: [],
},
german: {
HIGHEST: [
{ pattern: "denk mehr", needsWordBoundary: true },
{ pattern: "denk gründlich", needsWordBoundary: true },
{ pattern: "denk tief", needsWordBoundary: true },
],
MIDDLE: [
{ pattern: "denk nach", needsWordBoundary: true },
{ pattern: "denk", needsWordBoundary: true },
],
BASIC: [
{ pattern: "denke", needsWordBoundary: true },
{ pattern: "nachdenken", needsWordBoundary: true },
],
NONE: [],
},
korean: {
HIGHEST: [{ pattern: "더 오래 생각" }, { pattern: "깊이 생각" }, { pattern: "심사숙고" }, { pattern: "곰곰이 생각" }],
MIDDLE: [{ pattern: "많이 생각" }, { pattern: "더 생각" }, { pattern: "잘 생각" }],
BASIC: [{ pattern: "생각" }],
NONE: [],
},
italian: {
HIGHEST: [
{ pattern: "pensa di più", needsWordBoundary: true },
{ pattern: "pensa a lungo", needsWordBoundary: true },
{ pattern: "pensa profondamente", needsWordBoundary: true },
{ pattern: "rifletti a fondo", needsWordBoundary: true },
],
MIDDLE: [
{ pattern: "pensa", needsWordBoundary: true },
{ pattern: "pensa molto", needsWordBoundary: true },
{ pattern: "rifletti", needsWordBoundary: true },
],
BASIC: [
{ pattern: "penso", needsWordBoundary: true },
{ pattern: "pensare", needsWordBoundary: true },
{ pattern: "pensando", needsWordBoundary: true },
{ pattern: "riflettere", needsWordBoundary: true },
],
NONE: [],
},
};
// Extract plain text from a message object
function getMessageText(msg) {
if (typeof msg.message?.content === "string") return msg.message.content;
return (msg.message?.content || [])
.map((p) => (p.type === "text" ? p.text : ""))
.join("");
}
// Score a single message for thinking tokens
function scoreMessageThinkingTokens(msg) {
if (msg.isMeta) return 0;
const text = getMessageText(msg)
.toLowerCase()
.replaceAll("i think", "")
.replaceAll("we think", "");
const tokens = scoreTextThinkingTokens(text);
if (tokens > 0) X1("tengu_thinking", { provider: HN(), tokenCount: tokens });
return tokens;
}
// Compute tokens for free text using cue tables
function scoreTextThinkingTokens(text) {
const levels = [
["HIGHEST", THINK_LEVEL.HIGHEST],
["MIDDLE", THINK_LEVEL.MIDDLE],
["BASIC", THINK_LEVEL.BASIC],
];
for (const [levelKey, val] of levels) {
if (matchesLevel(text, levelKey)) return val;
}
return THINK_LEVEL.NONE;
}
// Check if text matches any cue at a given level across languages
function matchesLevel(text, levelKey) {
for (const lang of Object.values(THINK_CUES)) {
const cues = lang[levelKey] || [];
for (const { pattern, needsWordBoundary } of cues) {
const re = needsWordBoundary
? new RegExp(`\\b${pattern}\\b`)
: new RegExp(pattern);
if (re.test(text)) return true;
}
}
return false;
}
// Determine max thinking tokens from env or user messages
function selectMaxThinkingTokens(messages, fallbackMax) {
if (process.env.MAX_THINKING_TOKENS) {
const Q = parseInt(process.env.MAX_THINKING_TOKENS, 10);
if (Q > 0) X1("tengu_thinking", { provider: HN(), tokenCount: Q });
return Q;
}
const bestFromUser = Math.max(
...messages
.filter((m) => m.type === "user" && !m.isMeta)
.map(scoreMessageThinkingTokens),
fallbackMax ?? 0
);
return bestFromUser;
}
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