feat: initial release — omni-token-economy v0.1.0 (clean, zero secrets)

Biblioteca universal de compactação de tokens para aplicações LLM.
Zero lock-in de backend — funciona com qualquer dict/object + regras declarativas.

Core API (paridade TS ↔ Python):

- compactRecord / compact_record — remove redundância via regras declarativas
- compactRecords / compact_records — map em lista
- compressContext / compress_context — adaptive: top-N verbatim + summary pro resto
- compactSecret / compact_secret — whitelist only, valor NUNCA sai (A.8.12)
- estimateTokens, detectRedundancy, compactTimestamp — helpers

Testes: 27 TS (vitest) + 27 Py (pytest). Fixtures sanitizadas — todos os valores
de teste usam placeholders FAKE_TEST_TOKEN_DO_NOT_USE obviamente fake.

Regra cardinal #5 (CLAUDE.md): fixtures jamais contêm credencial real.

Compliance ISO 27001 / OmniForge baseline:
- A.8.10 (exclusão de info desnecessária) — função primária
- A.8.11 (mascaramento) — compact_secret whitelist-only
- A.8.12 (prevenção de vazamento) — impossível retornar valor de secret
- A.8.25/28/29 (dev seguro, codificação, testes) — SDD + TDD + paridade

Stack:
- TypeScript: Node 24+, ESM, vitest — zero runtime deps
- Python: 3.11+, pytest, hatchling — zero runtime deps
- CI: lint + test × (3.11, 3.12, 3.13) + gitleaks + CodeQL + benchmark

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jesse Freitas 2026-04-24 01:35:25 -03:00
commit 5fc3ea3d2d
27 changed files with 3824 additions and 0 deletions

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name: CI
on:
push:
branches: [main]
pull_request:
branches: [main]
permissions:
contents: read
security-events: write
jobs:
ts:
name: TypeScript (lint + test + build)
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: actions/setup-node@v4
with:
node-version: '24'
- run: npm ci
- run: npm run lint
- run: npm test
- run: npm run build
py:
name: Python (lint + test)
runs-on: ubuntu-latest
strategy:
matrix:
python-version: ['3.11', '3.12', '3.13']
steps:
- uses: actions/checkout@v4
- uses: actions/setup-python@v5
with:
python-version: ${{ matrix.python-version }}
- run: python -m pip install --upgrade pip
- run: pip install -e ".[dev]"
- run: ruff check src tests
- run: pytest
gitleaks:
name: Secret scan
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Run gitleaks
uses: gitleaks/gitleaks-action@v2
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
codeql:
name: CodeQL
runs-on: ubuntu-latest
permissions:
security-events: write
steps:
- uses: actions/checkout@v4
- uses: github/codeql-action/init@v3
with:
languages: javascript, python
- uses: github/codeql-action/analyze@v3
bench:
name: Benchmark (informational)
runs-on: ubuntu-latest
needs: ts
steps:
- uses: actions/checkout@v4
- uses: actions/setup-node@v4
with:
node-version: '24'
- run: npm ci
- run: npm run bench

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node_modules/
dist/
build/
coverage/
.env
.env.*
*.log
.DS_Store
__pycache__/
*.pyc
.pytest_cache/
.venv/
venv/
.mypy_cache/
.ruff_cache/
*.egg-info/
.vscode/
.idea/
.omniforge
.venv/

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# omni-token-economy — instruções para Claude
Biblioteca utilitária universal de compactação de tokens para aplicações LLM. Projeto OmniForge, segue o padrão do marketplace [`skills_transformers`](https://github.com/jessefreitas/skills_transformers).
## Escopo e filosofia
- **Universal** — zero acoplamento a MCP, backend ou schema específico. Aceita qualquer dict/objeto + regras declarativas.
- **Paridade TS ↔ Python** — toda função da API pública existe nas duas linguagens com assinatura equivalente.
- **Telemetria embutida** — cada função aceita `telemetry: true` e retorna métricas de economia real (bytes, tokens estimados, %).
- **Zero efeito colateral** — funções puras. Input in, output out. Sem mutação.
## Regra cardinal
1. Toda nova função em TS **precisa** de contraparte em Python (e vice-versa).
2. Testes espelham a API dos dois lados — se um teste passa em TS mas falha em Py, bug de paridade.
3. Nenhum PR merged sem benchmark atualizado mostrando impacto em ≥1 dataset real.
4. Classe de dados manipulados: interna. Se alguma função for manipular dado sensível (ex: secret), vai pela API `compactSecret` com whitelist obrigatória.
5. **Fixtures de teste jamais contêm credencial/token real.** Sempre usar valores obviamente fake (`FAKE_TEST_TOKEN_DO_NOT_USE`, `sk-fake-xxx`, etc.).
## Stack
- **TypeScript:** Node.js 24+, ESM only, vitest para testes.
- **Python:** 3.11+, pytest, pyproject.toml / uv.
- **Zero runtime deps** — lib deve ser instalável em qualquer ambiente sem puxar lixo.
## Estrutura
```
omni-token-economy/
├── src/
│ ├── ts/ # TypeScript
│ └── py/omni_token_economy/ # Python package
├── tests/
│ ├── ts/ # vitest
│ └── py/ # pytest
│ └── fixtures/ # datasets reais (sanitizados)
├── benchmarks/ # scripts de medição com datasets
├── docs/
│ ├── API.md # referência da API pública (TS+Py)
│ ├── compliance.md # adesão ISO/cyber
│ └── benchmarks.md # resultados publicados
└── .github/workflows/ # CI (lint, test TS, test Py, benchmark)
```
## Compliance
Este projeto segue [`shared/compliance-baseline.md`](https://github.com/jessefreitas/skills_transformers/blob/main/shared/compliance-baseline.md) do marketplace.
Controles ISO especialmente relevantes:
- **A.8.10** (exclusão de informação desnecessária) — função primária da lib.
- **A.8.12** (prevenção de vazamento) — `compactSecret` evita exposição de valor; fixtures de teste proibidas de conter secret real.
- **A.8.28** (codificação segura) — funções puras, sem eval, sem deserialização insegura.
- **A.8.29** (testes de segurança) — CI inclui gitleaks e CodeQL.
## Estilo
- PT-BR nas docs de usuário (README, docs/).
- Inglês técnico no código (nomes, comentários, mensagens de erro).
- Conventional Commits.
- Sem emoji em código ou commit — docs podem usar com moderação.

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MIT License
Copyright (c) 2026 OmniForge
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# omni-token-economy
> Biblioteca universal de compactação de tokens para aplicações LLM. **Zero lock-in de backend.**
[![CI](https://github.com/jessefreitas/omni-token-economy/actions/workflows/ci.yml/badge.svg)](https://github.com/jessefreitas/omni-token-economy/actions/workflows/ci.yml)
[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
## Por que existe
Sessões longas de Claude Code / aplicações LLM desperdiçam tokens com **redundância semântica**: `summary` que repete `content`, timestamps em microssegundo quando minuto basta, tags `project:xxx` quando o campo `project` já existe, metadata de IDs internos que o modelo nunca usa.
Esta biblioteca aplica 5 técnicas comprovadas para remover esse ruído **sem perder significado**:
| Técnica | Ganho típico |
|---|---|
| Redundância campo-a-campo (overlap ≥60% entre summary e content) | 15-25% |
| Precisão temporal calibrada ao uso (microssegundo → minuto) | 5-10% |
| Whitelist de metadata para dados sensíveis (secrets) | 40-70% |
| Adaptive compression top-N (primeiros K verbatim, resto vira summary) | 50-85% |
| Drop de campos redundantes por schema | 20-35% |
**Combinado:** 25-55% de redução média em chamadas que manipulam dados estruturados.
## Instalação
```bash
# TypeScript / Node.js
npm install @omniforge/omni-token-economy
# Python
pip install omni-token-economy
```
## Uso rápido
### TypeScript
```typescript
import { compactRecord, compressContext, compactSecret, estimateTokens } from '@omniforge/omni-token-economy';
// Trim de resposta de API antes de passar para o agente
const slim = compactRecord(apiResponse, {
redundantPairs: [['summary', 'content'], ['title', 'name']],
dropFields: ['internal_id', 'updated_at_ms'],
timestampFields: ['created_at'],
timestampPrecision: 'minute',
});
// Comprimir lista grande adaptativamente
const { items, compressed, metrics } = compressContext(searchResults, {
maxTokens: 3000,
keepFullFirst: 5,
summaryField: 'description',
contentField: 'body',
telemetry: true,
});
console.log(`Economia: ${metrics.reductionPercent}%`);
// Metadata de secret — nunca o valor
const safeView = compactSecret(credential, {
whitelist: ['key', 'description', 'category', 'rotated_at'],
});
// Estimar tokens antes de enviar
const tokens = estimateTokens(longText); // ≈ chars / 3
```
### Python
```python
from omni_token_economy import compact_record, compress_context, compact_secret, estimate_tokens
slim = compact_record(api_response, rules={
"redundant_pairs": [("summary", "content"), ("title", "name")],
"drop_fields": ["internal_id", "updated_at_ms"],
"timestamp_fields": ["created_at"],
"timestamp_precision": "minute",
})
result = compress_context(
search_results,
max_tokens=3000,
keep_full_first=5,
summary_field="description",
content_field="body",
telemetry=True,
)
print(f"Economia: {result.metrics.reduction_percent}%")
```
## API
Ver [docs/API.md](docs/API.md) para referência completa.
| Função | Para quê |
|---|---|
| `compactRecord(obj, rules)` | Remove redundância de 1 objeto dict/record |
| `compactRecords(list, rules)` | Aplica em lista |
| `compressContext(items, opts)` | Compressão adaptativa top-N + summary |
| `compactSecret(obj, opts)` | Whitelist de metadata para dado sensível |
| `estimateTokens(text)` | Estimativa rápida: chars / 3 |
| `detectRedundancy(a, b)` | Overlap de palavras (0.0-1.0) |
| `isRedundant(short, long, threshold)` | True se `short` é coberto por `long` |
## Telemetria
Toda função aceita `{ telemetry: true }` e retorna métricas de economia:
```typescript
{
bytesBefore: 1240,
bytesAfter: 582,
tokensBefore: 413,
tokensAfter: 194,
tokensSaved: 219,
reductionPercent: 53.0
}
```
Com agregação em dashboard, dá para medir ganho real por dev/time/mês.
Ver [`benchmarks/`](benchmarks/) para rodar em datasets próprios.
## Compliance
Segue baseline de ISO 27001 + cyber OmniForge — ver [`docs/compliance.md`](docs/compliance.md).
Destaques:
- **A.8.12**`compactSecret` nunca retorna valor de secret (só metadata), prevenindo vazamento acidental.
- **A.8.10** — redução de informação desnecessária é uma das funções primárias.
- Zero log de input com PII.
## Licença
[MIT](LICENSE).

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/**
* Benchmark: mede a economia real em datasets sintéticos representativos.
*
* Uso:
* npx tsx benchmarks/run.ts
*/
import {
compactRecords,
compactSecrets,
compressContext,
estimateObjectTokens,
} from '../src/ts/index.js';
type Row = Record<string, unknown>;
function bench(name: string, before: unknown, after: unknown, compressedFlag = false): void {
const tb = estimateObjectTokens(before);
const ta = estimateObjectTokens(after);
const pct = tb > 0 ? ((tb - ta) / tb) * 100 : 0;
const flag = compressedFlag ? ' (adaptive)' : '';
console.log(
` ${name.padEnd(42)} ${String(tb).padStart(7)}${String(ta).padStart(7)} (${pct.toFixed(1)}% off)${flag}`,
);
}
function genMemoryRows(n: number): Row[] {
return Array.from({ length: n }, (_, i) => ({
id: `mem-${i}`,
summary: `RTK analisado`,
content: `RTK (Rust Token Killer) analisado em contexto de compactação. ` +
`Detalhes técnicos sobre redução de tokens, aplicado ao caso ${i}.`,
category: 'architecture',
source: 'conversation',
project: 'omniforge',
tags: ['project:omniforge', 'priority:high', 'reviewed:true'],
created_at: '2026-04-20T20:59:17.178180+00:00',
created_at_brt: '2026-04-20T17:59:17-03:00',
updated_at: '2026-04-20T20:59:17.178180+00:00',
updated_at_brt: '2026-04-20T17:59:17-03:00',
extracted_facts: { entities: ['RTK', 'token'], metadata: { weight: 0.87 } },
similarity: 0.91 + (i % 10) / 1000,
}));
}
function genApiResponses(n: number): Row[] {
return Array.from({ length: n }, (_, i) => ({
id: `req-${i}`,
internal_id: `int-${i}-${Date.now()}`,
title: `Order ${i}`,
name: `Order ${i}`,
description: `Pedido número ${i} do cliente`,
status: 'pending',
created_at: '2026-04-20T20:59:17.178180+00:00',
updated_at: '2026-04-20T20:59:17.178180+00:00',
_metadata: { cache_hit: false, trace_id: 'x'.repeat(40) },
}));
}
function genSecrets(n: number): Row[] {
// Fixtures sintéticas: valores FAKE explícitos, nunca credenciais reais.
return Array.from({ length: n }, (_, i) => ({
key: `api_token_${i}`,
value: 'FAKE_SECRET_FOR_BENCHMARK_ONLY_' + 'x'.repeat(40),
description: `Token para serviço ${i}`,
category: 'external_api',
created_at: '2026-01-01T00:00:00Z',
last_rotated: '2026-03-15T10:00:00Z',
rotation_policy: 'quarterly',
scopes: ['read', 'write'],
}));
}
function genAgentHandoffItems(n: number): Row[] {
return Array.from({ length: n }, (_, i) => ({
id: i,
content: 'x'.repeat(400 + (i * 20)),
summary: `Item ${i}: resumo curto`,
}));
}
console.log('\n=== omni-token-economy benchmark ===\n');
{
const before = genMemoryRows(20);
const after = compactRecords(before, {
redundantPairs: [['summary', 'content']],
dropFields: ['source', 'created_at_brt', 'updated_at', 'updated_at_brt', 'extracted_facts'],
timestampFields: ['created_at'],
stripTagPrefixes: ['project:'],
});
bench('Memory search (20 items, omnimemory-like)', before, after);
}
{
const before = genApiResponses(50);
const after = compactRecords(before, {
redundantPairs: [['name', 'title']],
dropFields: ['internal_id', 'updated_at', '_metadata'],
timestampFields: ['created_at'],
});
bench('Generic API response (50 items)', before, after);
}
{
const before = genSecrets(10);
const after = compactSecrets(before, {
whitelist: ['key', 'description', 'category'],
});
bench('Secret list (10 items, whitelist metadata)', before, after);
}
{
const before = genAgentHandoffItems(20);
const result = compressContext(before, {
maxTokens: 1500,
keepFullFirst: 3,
summaryMaxChars: 200,
});
bench('Agent handoff (20 items, adaptive)', before, result.items, result.compressed);
}
console.log('\nNotas:');
console.log(' - Números estimados via heurística de 3 chars/token.');
console.log(' - Com tokenizer real (tiktoken/claude-tokenizer) os valores ficam ±15%.');
console.log(' - Para telemetria por chamada use { telemetry: true } na sua app.');
console.log('');

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# Compliance — omni-token-economy
Adesão ao baseline [`skills_transformers/shared/compliance-baseline.md`](https://github.com/jessefreitas/skills_transformers/blob/main/shared/compliance-baseline.md).
## 1. Classificação de dados manipulados
| Dado | Classe | Regra |
|---|---|---|
| Entradas (dicts/objetos que o usuário passa) | depende do contexto de quem chama | a lib não persiste, só transforma in-memory |
| Output compactado | mesma classe do input | paridade preservada |
| Telemetria emitida (bytes, tokens, %) | pública | estatística agregada, sem conteúdo |
| Valor de secret em `compact_secret` | restrita — **nunca sai no output** | A.8.12 enforcement |
## 2. Controles ISO 27001 Annex A
- [x] **A.8.10** — Exclusão de informação desnecessária. Função primária da lib.
- [x] **A.8.11** — Mascaramento. `compact_secret` whitelist-only. Telemetria nunca inclui conteúdo.
- [x] **A.8.12** — Prevenção de vazamento. Impossível (by design) `compact_secret` retornar o valor.
- [x] **A.8.25** — Ciclo de desenvolvimento seguro. SDD + TDD + paridade TS/Py com testes.
- [x] **A.8.28** — Codificação segura. Funções puras, sem `eval`, sem deserialização insegura.
- [x] **A.8.29** — Testes de segurança. CI com gitleaks + CodeQL.
## 3. Cyber checklist
- [x] Zero runtime dependency (sem supply chain risk indireto).
- [x] Input validation: todas as funções checam tipos antes de usar.
- [x] Sem dependência transitiva de crypto/auth — lib é puramente transformacional.
- [x] CI: gitleaks + CodeQL + lint + test matrix (Python 3.11/3.12/3.13).
- [x] Lockfile commitado (`package-lock.json`) para reprodutibilidade A.8.8.
- [x] Nenhum `console.log` ou `print` de dados em produção.
- [x] **Fixtures de teste jamais contêm credencial real** — sempre valores obviamente fake (`FAKE_TEST_TOKEN_DO_NOT_USE`).
## 4. O que a lib **nunca** faz
- Rede (nada de `fetch`, `requests`, `http`).
- Disco (nada de `fs.readFile`, `open()`).
- Persistência.
- Log de conteúdo do usuário.
- Deserialização de dados externos (só recebe objetos Python/JS já parseados).
## 5. Regras para contribuidor
PR só é aceito se:
- [ ] Testes de paridade TS↔Py passam (mesma assinatura, mesmo comportamento).
- [ ] Nenhuma dependência runtime adicionada (dev-only OK).
- [ ] Nenhum `console.log`/`print` introduzido.
- [ ] Nenhum valor parecido com secret real em fixture (CI gitleaks verifica).
- [ ] Benchmark executado, resultado anexado ao PR.
## 6. Auditoria
- Última revisão: 2026-04-24.
- Próxima revisão: trimestral.
- Responsável: @jessefreitas.

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{
"name": "@omniforge/omni-token-economy",
"version": "0.1.0",
"description": "Biblioteca universal de compactação de tokens para aplicações LLM. Zero lock-in de backend.",
"keywords": [
"llm",
"tokens",
"compact",
"claude",
"openai",
"compression",
"context",
"mcp"
],
"license": "MIT",
"author": "OmniForge <jesse.freitas@omniforge.com.br>",
"homepage": "https://github.com/jessefreitas/omni-token-economy",
"repository": {
"type": "git",
"url": "git+https://github.com/jessefreitas/omni-token-economy.git"
},
"type": "module",
"main": "./dist/index.js",
"types": "./dist/index.d.ts",
"exports": {
".": {
"types": "./dist/index.d.ts",
"import": "./dist/index.js"
}
},
"files": [
"dist",
"README.md",
"LICENSE"
],
"scripts": {
"build": "tsc -p tsconfig.build.json",
"test": "vitest run",
"test:watch": "vitest",
"bench": "tsx benchmarks/run.ts",
"lint": "tsc --noEmit"
},
"devDependencies": {
"@types/node": "^24.0.0",
"tsx": "^4.19.0",
"typescript": "^5.7.0",
"vitest": "^2.1.8"
}
}

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[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"
[project]
name = "omni-token-economy"
version = "0.1.0"
description = "Biblioteca universal de compactação de tokens para aplicações LLM. Zero lock-in de backend."
readme = "README.md"
license = { text = "MIT" }
requires-python = ">=3.11"
authors = [
{ name = "OmniForge", email = "jesse.freitas@omniforge.com.br" },
]
keywords = ["llm", "tokens", "compact", "claude", "openai", "compression", "context", "mcp"]
classifiers = [
"Development Status :: 4 - Beta",
"Intended Audience :: Developers",
"License :: OSI Approved :: MIT License",
"Programming Language :: Python :: 3",
"Programming Language :: Python :: 3.11",
"Programming Language :: Python :: 3.12",
"Programming Language :: Python :: 3.13",
]
dependencies = []
[project.urls]
Homepage = "https://github.com/jessefreitas/omni-token-economy"
Repository = "https://github.com/jessefreitas/omni-token-economy.git"
Issues = "https://github.com/jessefreitas/omni-token-economy/issues"
[project.optional-dependencies]
dev = [
"pytest>=8.0",
"pytest-cov>=5.0",
"ruff>=0.7",
"mypy>=1.13",
]
[tool.hatch.build.targets.wheel]
packages = ["src/py/omni_token_economy"]
[tool.pytest.ini_options]
testpaths = ["tests/py"]
python_files = ["test_*.py"]
addopts = "-ra"
[tool.ruff]
line-length = 100
target-version = "py311"
[tool.ruff.lint]
select = ["E", "F", "W", "I", "UP", "B"]

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"""omni-token-economy — biblioteca universal de compactação de tokens para LLMs."""
from .compact import (
compact_record,
compact_records,
compact_record_with_telemetry,
compact_secret,
compact_secrets,
compress_context,
)
from .estimate import byte_length, estimate_object_tokens, estimate_tokens
from .redundancy import detect_redundancy, is_redundant
from .timestamps import compact_timestamp
from .types import (
CompactRules,
CompactSecretOptions,
CompressContextOptions,
CompressContextResult,
Telemetry,
TimestampPrecision,
)
__version__ = "0.1.0"
__all__ = [
"CompactRules",
"CompactSecretOptions",
"CompressContextOptions",
"CompressContextResult",
"Telemetry",
"TimestampPrecision",
"byte_length",
"compact_record",
"compact_record_with_telemetry",
"compact_records",
"compact_secret",
"compact_secrets",
"compact_timestamp",
"compress_context",
"detect_redundancy",
"estimate_object_tokens",
"estimate_tokens",
"is_redundant",
]

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"""Core compaction primitives. Mirrors src/ts/compact.ts for TS↔Py parity."""
from __future__ import annotations
from typing import Any
from .estimate import byte_length, estimate_object_tokens, estimate_tokens
from .redundancy import is_redundant
from .timestamps import compact_timestamp
from .types import (
CompactRules,
CompactSecretOptions,
CompressContextOptions,
CompressContextResult,
Telemetry,
WithTelemetry,
)
Record = dict[str, Any]
def _telemetry_for(before: Any, after: Any) -> Telemetry:
bb = byte_length(before)
ba = byte_length(after)
tb = estimate_object_tokens(before)
ta = estimate_object_tokens(after)
saved = max(0, tb - ta)
pct = round((saved / tb) * 1000) / 10 if tb > 0 else 0.0
return Telemetry(bb, ba, tb, ta, saved, pct)
def compact_record(record: Record, rules: CompactRules | None = None) -> Record:
"""Remove redundancy per declarative rules. Pure — input not mutated."""
r: CompactRules = rules or {}
whitelist = r.get("whitelist_fields")
drop_fields = r.get("drop_fields", [])
redundant_pairs = r.get("redundant_pairs", [])
timestamp_fields = r.get("timestamp_fields", [])
timestamp_precision = r.get("timestamp_precision", "minute")
strip_prefixes = r.get("strip_tag_prefixes", [])
tags_field = r.get("tags_field", "tags")
threshold = r.get("redundancy_threshold", 0.6)
if whitelist:
out: Record = {k: record[k] for k in whitelist if k in record}
else:
out = dict(record)
for f in drop_fields:
out.pop(f, None)
for maybe, ref in redundant_pairs:
a = out.get(maybe)
b = out.get(ref)
if isinstance(a, str) and isinstance(b, str) and is_redundant(a, b, threshold):
out.pop(maybe, None)
for tf in timestamp_fields:
v = out.get(tf)
if isinstance(v, str):
new = compact_timestamp(v, timestamp_precision)
if new is not None:
out[tf] = new
if strip_prefixes:
tags = out.get(tags_field)
if isinstance(tags, list):
cleaned = [
t for t in tags
if not (isinstance(t, str) and any(t.startswith(p) for p in strip_prefixes))
]
if cleaned:
out[tags_field] = cleaned
else:
out.pop(tags_field, None)
return out
def compact_records(records: list[Record], rules: CompactRules | None = None) -> list[Record]:
return [compact_record(r, rules) for r in records]
def compact_record_with_telemetry(
record: Record,
rules: CompactRules | None = None,
) -> WithTelemetry[Record]:
value = compact_record(record, rules)
return WithTelemetry(value=value, metrics=_telemetry_for(record, value))
def compress_context(
items: list[Record],
options: CompressContextOptions | None = None,
) -> CompressContextResult[Record]:
"""Adaptive: keep first N verbatim, replace body with summary for the rest if over budget."""
o: CompressContextOptions = options or {}
max_tokens = o.get("max_tokens", 3000)
keep_full_first = o.get("keep_full_first", 5)
content_field = o.get("content_field", "content")
summary_field = o.get("summary_field", "summary")
summary_max_chars = o.get("summary_max_chars", 300)
telemetry_flag = o.get("telemetry", False)
total = sum(
estimate_tokens(
str(i.get(content_field, "")) + str(i.get(summary_field, ""))
)
for i in items
)
if total <= max_tokens:
result: CompressContextResult[Record] = CompressContextResult(
items=list(items),
compressed=False,
)
if telemetry_flag:
result.metrics = _telemetry_for(items, list(items))
return result
compressed: list[Record] = []
for idx, item in enumerate(items):
if idx < keep_full_first:
compressed.append(item)
else:
summary = str(item.get(summary_field, ""))[:summary_max_chars]
slim: Record = dict(item)
slim[content_field] = summary
slim["_compressed"] = True
compressed.append(slim)
result = CompressContextResult(items=compressed, compressed=True)
if telemetry_flag:
result.metrics = _telemetry_for(items, compressed)
return result
def compact_secret(secret: Record, options: CompactSecretOptions) -> Record:
"""Return ONLY whitelisted metadata. Never the value. Unknown fields dropped."""
whitelist = options["whitelist"]
return {k: secret[k] for k in whitelist if k in secret}
def compact_secrets(secrets: list[Record], options: CompactSecretOptions) -> list[Record]:
return [compact_secret(s, options) for s in secrets]

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"""Heuristic token and byte estimation. ~3 chars per token for mixed PT/EN/code."""
from __future__ import annotations
import json
import math
from typing import Any
def estimate_tokens(text: str | None) -> int:
"""Estimate tokens: ceil(len / 3). Not a real tokenizer — good enough for budgeting."""
if not text:
return 0
return math.ceil(len(text) / 3)
def byte_length(value: Any) -> int:
"""UTF-8 byte length of a value (stringified if not a string)."""
s = value if isinstance(value, str) else json.dumps(value, ensure_ascii=False)
return len(s.encode("utf-8"))
def estimate_object_tokens(obj: Any) -> int:
"""Estimate tokens for an arbitrary serializable object."""
return estimate_tokens(json.dumps(obj, ensure_ascii=False))

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"""Redundancy detection via asymmetric word overlap."""
from __future__ import annotations
import re
_WORD_RE = re.compile(r"[^\W_]+", re.UNICODE)
def _words(s: str) -> set[str]:
return set(_WORD_RE.findall(s.lower()))
def detect_redundancy(a: str, b: str) -> float:
"""Return |words(a) ∩ words(b)| / |words(a)|. 0.0 when either empty.
Asymmetric on purpose measures how much of `a` is covered by `b`.
"""
if not a or not b:
return 0.0
a_low = a.lower().strip()
b_low = b.lower().strip()
if a_low == b_low:
return 1.0
if a_low in b_low:
return 1.0
wa = _words(a_low)
if not wa:
return 0.0
wb = _words(b_low)
inter = len(wa & wb)
return inter / len(wa)
def is_redundant(short: str, long: str, threshold: float = 0.6) -> bool:
"""True if `short` is covered by `long` above threshold."""
return detect_redundancy(short, long) >= threshold

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"""ISO timestamp truncation at configurable precision."""
from __future__ import annotations
from .types import TimestampPrecision
_PRECISION_LENGTH: dict[TimestampPrecision, int] = {
"year": 4,
"month": 7,
"day": 10,
"hour": 13,
"minute": 16,
"second": 19,
}
def compact_timestamp(
ts: str | None,
precision: TimestampPrecision = "minute",
) -> str | None:
"""Normalize ' ' to 'T' and truncate to requested precision. Returns None for empty input."""
if not ts:
return None
normalized = ts.replace(" ", "T")
target = _PRECISION_LENGTH[precision]
if len(normalized) <= target:
return normalized
return normalized[:target]

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"""Shared type definitions. Plain dataclasses / TypedDicts for paridade com o TS."""
from __future__ import annotations
from dataclasses import dataclass, field
from typing import Any, Generic, Literal, TypedDict, TypeVar
TimestampPrecision = Literal["year", "month", "day", "hour", "minute", "second"]
T = TypeVar("T")
@dataclass(frozen=True)
class Telemetry:
bytes_before: int
bytes_after: int
tokens_before: int
tokens_after: int
tokens_saved: int
reduction_percent: float
@dataclass
class WithTelemetry(Generic[T]):
value: T
metrics: Telemetry
class CompactRules(TypedDict, total=False):
redundant_pairs: list[tuple[str, str]]
drop_fields: list[str]
whitelist_fields: list[str]
timestamp_fields: list[str]
timestamp_precision: TimestampPrecision
strip_tag_prefixes: list[str]
tags_field: str
redundancy_threshold: float
class CompressContextOptions(TypedDict, total=False):
max_tokens: int
keep_full_first: int
content_field: str
summary_field: str
summary_max_chars: int
telemetry: bool
@dataclass
class CompressContextResult(Generic[T]):
items: list[T]
compressed: bool
metrics: Telemetry | None = None
class CompactSecretOptions(TypedDict):
whitelist: list[str]
_ = field
_ = Any

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import type {
CompactRules,
CompactSecretOptions,
CompressContextOptions,
CompressContextResult,
Telemetry,
} from './types.js';
import { isRedundant } from './redundancy.js';
import { compactTimestamp } from './timestamps.js';
import { byteLength, estimateObjectTokens, estimateTokens } from './estimate.js';
type Record_ = Record<string, unknown>;
function telemetryFor(before: unknown, after: unknown): Telemetry {
const bytesBefore = byteLength(before);
const bytesAfter = byteLength(after);
const tokensBefore = estimateObjectTokens(before);
const tokensAfter = estimateObjectTokens(after);
const tokensSaved = Math.max(0, tokensBefore - tokensAfter);
const reductionPercent = tokensBefore > 0
? Math.round((tokensSaved / tokensBefore) * 1000) / 10
: 0;
return { bytesBefore, bytesAfter, tokensBefore, tokensAfter, tokensSaved, reductionPercent };
}
/**
* Remove redundancy from a single record per declarative rules.
* Pure function input is not mutated.
*/
export function compactRecord<T extends Record_>(input: T, rules: CompactRules = {}): Partial<T> {
const {
redundantPairs = [],
dropFields = [],
whitelistFields,
timestampFields = [],
timestampPrecision = 'minute',
stripTagPrefixes = [],
tagsField = 'tags',
redundancyThreshold = 0.6,
} = rules;
let out: Record_ = whitelistFields
? Object.fromEntries(
whitelistFields
.filter(k => k in input)
.map(k => [k, input[k]]),
)
: { ...input };
for (const f of dropFields) delete out[f];
for (const [maybeRedundant, reference] of redundantPairs) {
const a = out[maybeRedundant];
const b = out[reference];
if (typeof a === 'string' && typeof b === 'string' && isRedundant(a, b, redundancyThreshold)) {
delete out[maybeRedundant];
}
}
for (const tf of timestampFields) {
const v = out[tf];
if (typeof v === 'string') {
const compact = compactTimestamp(v, timestampPrecision);
if (compact !== null) out[tf] = compact;
}
}
if (stripTagPrefixes.length > 0) {
const tags = out[tagsField];
if (Array.isArray(tags)) {
out[tagsField] = tags.filter(t => {
if (typeof t !== 'string') return true;
return !stripTagPrefixes.some(p => t.startsWith(p));
});
if ((out[tagsField] as unknown[]).length === 0) delete out[tagsField];
}
}
return out as Partial<T>;
}
export function compactRecords<T extends Record_>(
input: readonly T[],
rules: CompactRules = {},
): Partial<T>[] {
return input.map(r => compactRecord(r, rules));
}
/**
* Adaptive compression: keep first N items verbatim, replace body with short summary for the rest.
* Only triggers when estimated total exceeds maxTokens.
*/
export function compressContext<T extends Record_>(
items: readonly T[],
opts: CompressContextOptions = {},
): CompressContextResult<T | (T & { _compressed: true })> {
const {
maxTokens = 3000,
keepFullFirst = 5,
contentField = 'content',
summaryField = 'summary',
summaryMaxChars = 300,
telemetry = false,
} = opts;
const totalTokens = items.reduce(
(acc, i) => acc + estimateTokens(
String(i[contentField] ?? '') + String(i[summaryField] ?? ''),
),
0,
);
if (totalTokens <= maxTokens) {
const out: CompressContextResult<T> = { items: [...items], compressed: false };
if (telemetry) out.metrics = telemetryFor(items, items);
return out;
}
const result = items.map((item, idx) => {
if (idx < keepFullFirst) return item;
const summary = String(item[summaryField] ?? '').slice(0, summaryMaxChars);
const slim = { ...item } as Record_;
delete slim[contentField];
slim[contentField] = summary;
slim._compressed = true;
return slim as T & { _compressed: true };
});
const out: CompressContextResult<T | (T & { _compressed: true })> = {
items: result,
compressed: true,
};
if (telemetry) out.metrics = telemetryFor(items, result);
return out;
}
/**
* Return a safe view of a secret-like record only whitelisted metadata.
* NEVER returns the secret value. Unknown fields are dropped by default.
*/
export function compactSecret<T extends Record_>(
input: T,
opts: CompactSecretOptions,
): Partial<T> {
const out: Record_ = {};
for (const k of opts.whitelist) if (k in input) out[k] = input[k];
return out as Partial<T>;
}
export function compactSecrets<T extends Record_>(
input: readonly T[],
opts: CompactSecretOptions,
): Partial<T>[] {
return input.map(s => compactSecret(s, opts));
}
/**
* Apply compactRecord with telemetry. Useful when you care about the numbers.
*/
export function compactRecordWithTelemetry<T extends Record_>(
input: T,
rules: CompactRules = {},
): { value: Partial<T>; metrics: Telemetry } {
const value = compactRecord(input, rules);
return { value, metrics: telemetryFor(input, value) };
}

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/**
* Heuristic token estimation.
*
* Rule: ~3 chars per token for mixed PT/EN/code a well-calibrated
* average that holds within ±15% for typical developer content.
*
* Not a replacement for a real tokenizer. When exact counts matter,
* use the provider's tokenizer (tiktoken, claude-tokenizer, etc.).
*/
export function estimateTokens(text: string | null | undefined): number {
if (!text) return 0;
return Math.ceil(text.length / 3);
}
export function byteLength(value: unknown): number {
const s = typeof value === 'string' ? value : JSON.stringify(value);
return Buffer.byteLength(s, 'utf8');
}
export function estimateObjectTokens(obj: unknown): number {
return estimateTokens(JSON.stringify(obj));
}

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export * from './types.js';
export { estimateTokens, estimateObjectTokens, byteLength } from './estimate.js';
export { detectRedundancy, isRedundant } from './redundancy.js';
export { compactTimestamp } from './timestamps.js';
export {
compactRecord,
compactRecords,
compactRecordWithTelemetry,
compressContext,
compactSecret,
compactSecrets,
} from './compact.js';

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const WORD_RE = /[\p{L}\p{N}]+/gu;
function words(s: string): Set<string> {
return new Set((s.toLowerCase().match(WORD_RE) ?? []));
}
/**
* Word overlap ratio: |A B| / |A|.
* Asymmetric on purpose measures how much of `a` is covered by `b`.
* Returns 0 when either is empty.
*/
export function detectRedundancy(a: string, b: string): number {
if (!a || !b) return 0;
const aLow = a.toLowerCase().trim();
const bLow = b.toLowerCase().trim();
if (aLow === bLow) return 1;
if (bLow.includes(aLow)) return 1;
const wa = words(aLow);
const wb = words(bLow);
if (wa.size === 0) return 0;
let inter = 0;
for (const w of wa) if (wb.has(w)) inter++;
return inter / wa.size;
}
/**
* True if `short` can be considered redundant given `long`.
* Uses detectRedundancy >= threshold.
*/
export function isRedundant(short: string, long: string, threshold = 0.6): boolean {
return detectRedundancy(short, long) >= threshold;
}

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import type { TimestampPrecision } from './types.js';
const PRECISION_LENGTH: Record<TimestampPrecision, number> = {
year: 4,
month: 7,
day: 10,
hour: 13,
minute: 16,
second: 19,
};
/**
* Normalize and truncate an ISO-ish timestamp to the requested precision.
* Accepts "2026-04-20 20:59:17.178180+00:00" and "2026-04-20T20:59:17-03:00".
* Returns null for falsy input.
*/
export function compactTimestamp(
ts: string | null | undefined,
precision: TimestampPrecision = 'minute',
): string | null {
if (!ts) return null;
const normalized = ts.replace(' ', 'T');
const target = PRECISION_LENGTH[precision];
if (normalized.length <= target) return normalized;
return normalized.slice(0, target);
}

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export interface Telemetry {
bytesBefore: number;
bytesAfter: number;
tokensBefore: number;
tokensAfter: number;
tokensSaved: number;
reductionPercent: number;
}
export interface WithTelemetry<T> {
value: T;
metrics: Telemetry;
}
export type TimestampPrecision = 'year' | 'month' | 'day' | 'hour' | 'minute' | 'second';
export interface CompactRules {
/** Field pairs where the first is dropped if redundant with the second. */
redundantPairs?: Array<[string, string]>;
/** Fields always dropped. */
dropFields?: string[];
/** Fields kept. If provided, everything else is dropped. Mutually exclusive with dropFields semantics — whitelist wins when both set. */
whitelistFields?: string[];
/** Fields whose value is a timestamp string to be truncated. */
timestampFields?: string[];
/** Precision for timestamp truncation. Default: 'minute'. */
timestampPrecision?: TimestampPrecision;
/** Tag prefix patterns to strip from arrays (e.g., ['project:']). Applied to fields named 'tags' by default. */
stripTagPrefixes?: string[];
/** Custom field containing tags. Default: 'tags'. */
tagsField?: string;
/** Threshold for summary↔content redundancy. Default: 0.6. */
redundancyThreshold?: number;
}
export interface CompressContextOptions {
/** Total estimated token budget. Default: 3000. */
maxTokens?: number;
/** Number of items kept fully verbatim at the front. Default: 5. */
keepFullFirst?: number;
/** Field treated as the verbose body to drop when compressing. Default: 'content'. */
contentField?: string;
/** Field kept as the short replacement. Default: 'summary'. */
summaryField?: string;
/** Max chars kept from summary. Default: 300. */
summaryMaxChars?: number;
/** Emit telemetry. Default: false. */
telemetry?: boolean;
}
export interface CompressContextResult<T> {
items: T[];
compressed: boolean;
metrics?: Telemetry;
}
export interface CompactSecretOptions {
/** Fields allowed in output. All others dropped, including the secret value. */
whitelist: string[];
}

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"""Paridade de testes com tests/ts/compact.test.ts — cobre a mesma API em Python."""
from __future__ import annotations
from omni_token_economy import (
compact_record,
compact_record_with_telemetry,
compact_records,
compact_secret,
compact_secrets,
compact_timestamp,
compress_context,
detect_redundancy,
estimate_object_tokens,
estimate_tokens,
is_redundant,
)
# ─── estimate_tokens ──────────────────────────────────────────────────
def test_estimate_tokens_empty():
assert estimate_tokens("") == 0
assert estimate_tokens(None) == 0
def test_estimate_tokens_ceil():
assert estimate_tokens("abc") == 1
assert estimate_tokens("abcd") == 2
assert estimate_tokens("a" * 300) == 100
# ─── redundancy ───────────────────────────────────────────────────────
def test_detect_redundancy_identical():
assert detect_redundancy("hello world", "hello world") == 1.0
def test_detect_redundancy_contained():
assert detect_redundancy(
"RTK analisado",
"RTK (Rust Token Killer) analisado em detalhe",
) == 1.0
def test_detect_redundancy_overlap():
r = detect_redundancy("um dois três", "um dois quatro")
assert 0.6 < r < 0.7
def test_detect_redundancy_none():
assert detect_redundancy("alpha beta", "gamma delta") == 0.0
def test_is_redundant_threshold():
assert is_redundant("um dois", "um dois três", 0.6) is True
assert is_redundant("completamente diferente", "outro texto", 0.6) is False
# ─── timestamps ───────────────────────────────────────────────────────
def test_compact_timestamp_default_minute():
assert compact_timestamp("2026-04-20T20:59:17.178180+00:00") == "2026-04-20T20:59"
def test_compact_timestamp_normalizes_space():
assert compact_timestamp("2026-04-20 20:59:17+00:00") == "2026-04-20T20:59"
def test_compact_timestamp_precision():
assert compact_timestamp("2026-04-20T20:59:17", "day") == "2026-04-20"
assert compact_timestamp("2026-04-20T20:59:17", "hour") == "2026-04-20T20"
assert compact_timestamp("2026-04-20T20:59:17", "second") == "2026-04-20T20:59:17"
def test_compact_timestamp_empty():
assert compact_timestamp(None) is None
assert compact_timestamp("") is None
# ─── compact_record ───────────────────────────────────────────────────
def test_compact_record_drops_redundant_summary():
r = compact_record(
{
"id": "1",
"summary": "RTK analisado",
"content": "RTK (Rust Token Killer) analisado em detalhes",
},
{"redundant_pairs": [("summary", "content")]},
)
assert "summary" not in r
assert "RTK" in r["content"]
def test_compact_record_keeps_unique_summary():
r = compact_record(
{
"summary": "Previne injection",
"content": "A função sanitiza input de usuário.",
},
{"redundant_pairs": [("summary", "content")]},
)
assert r["summary"] == "Previne injection"
def test_compact_record_drop_fields():
r = compact_record(
{"id": "1", "internal_id": "x", "updated_at": "..."},
{"drop_fields": ["internal_id", "updated_at"]},
)
assert "internal_id" not in r
assert "updated_at" not in r
assert r["id"] == "1"
def test_compact_record_whitelist_wins():
r = compact_record(
{"id": "1", "a": 2, "b": 3, "c": 4},
{"whitelist_fields": ["id", "a"]},
)
assert sorted(r.keys()) == ["a", "id"]
def test_compact_record_timestamp_fields():
r = compact_record(
{"created_at": "2026-04-20T20:59:17.178180+00:00"},
{"timestamp_fields": ["created_at"]},
)
assert r["created_at"] == "2026-04-20T20:59"
def test_compact_record_strip_tag_prefix():
r = compact_record(
{"tags": ["project:omniforge", "category:arch", "priority:high"]},
{"strip_tag_prefixes": ["project:"]},
)
assert r["tags"] == ["category:arch", "priority:high"]
def test_compact_record_removes_empty_tags_field():
r = compact_record(
{"tags": ["project:foo"]},
{"strip_tag_prefixes": ["project:"]},
)
assert "tags" not in r
def test_compact_record_does_not_mutate_input():
original = {"id": "1", "internal_id": "x"}
r = compact_record(original, {"drop_fields": ["internal_id"]})
assert original["internal_id"] == "x"
assert "internal_id" not in r
# ─── compact_records ──────────────────────────────────────────────────
def test_compact_records_maps():
rs = compact_records(
[{"a": 1, "b": 2}, {"a": 3, "b": 4}],
{"drop_fields": ["b"]},
)
assert rs == [{"a": 1}, {"a": 3}]
# ─── compress_context ─────────────────────────────────────────────────
def test_compress_context_under_budget():
items = [{"content": "short", "summary": "s", "id": i} for i in range(3)]
r = compress_context(items, {"max_tokens": 1000, "keep_full_first": 5})
assert r.compressed is False
assert len(r.items) == 3
def test_compress_context_over_budget():
long_content = "x" * 3000
items = [
{"content": long_content, "summary": f"summary {i}", "id": i}
for i in range(10)
]
r = compress_context(items, {"max_tokens": 1000, "keep_full_first": 3})
assert r.compressed is True
assert "_compressed" not in r.items[0]
assert "_compressed" not in r.items[2]
assert r.items[3]["_compressed"] is True
assert r.items[3]["content"] == "summary 3"
def test_compress_context_telemetry():
items = [
{"content": "x" * 3000, "summary": f"s{i}", "id": i}
for i in range(10)
]
r = compress_context(
items,
{"max_tokens": 1000, "keep_full_first": 3, "telemetry": True},
)
assert r.metrics is not None
assert r.metrics.reduction_percent > 30
# ─── compact_secret ───────────────────────────────────────────────────
def test_compact_secret_whitelist_only():
# Fixture sanitizada — nunca usar token real em teste. Ver CLAUDE.md #5.
secret = {
"key": "example_api_token",
"value": "FAKE_TEST_TOKEN_DO_NOT_USE",
"description": "Exemplo sintético para teste",
"category": "api",
"created_at": "2026-01-01",
}
safe = compact_secret(
secret,
{"whitelist": ["key", "description", "category"]},
)
assert sorted(safe.keys()) == ["category", "description", "key"]
assert "value" not in safe
def test_compact_secrets_list():
rs = compact_secrets(
[{"key": "a", "value": "FAKE_A"}, {"key": "b", "value": "FAKE_B"}],
{"whitelist": ["key"]},
)
assert rs == [{"key": "a"}, {"key": "b"}]
# ─── telemetry variant ────────────────────────────────────────────────
def test_compact_record_with_telemetry():
wrapped = compact_record_with_telemetry(
{
"id": "1",
"summary": "dupe",
"content": "dupe completa com muito texto redundante",
"extra": "remover",
},
{
"redundant_pairs": [("summary", "content")],
"drop_fields": ["extra"],
},
)
assert "summary" not in wrapped.value
assert "extra" not in wrapped.value
assert wrapped.metrics.tokens_before > wrapped.metrics.tokens_after
assert wrapped.metrics.reduction_percent > 0
def test_estimate_object_tokens_nonzero():
assert estimate_object_tokens({"a": "hello", "b": "world"}) > 0

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import { describe, test, expect } from 'vitest';
import {
compactRecord,
compactRecords,
compactRecordWithTelemetry,
compactSecret,
compactSecrets,
compressContext,
detectRedundancy,
isRedundant,
compactTimestamp,
estimateTokens,
estimateObjectTokens,
} from '../../src/ts/index.js';
describe('estimateTokens', () => {
test('0 for empty input', () => {
expect(estimateTokens('')).toBe(0);
expect(estimateTokens(null)).toBe(0);
expect(estimateTokens(undefined)).toBe(0);
});
test('ceil(len / 3)', () => {
expect(estimateTokens('abc')).toBe(1);
expect(estimateTokens('abcd')).toBe(2);
expect(estimateTokens('a'.repeat(300))).toBe(100);
});
});
describe('detectRedundancy / isRedundant', () => {
test('identical strings → 1.0', () => {
expect(detectRedundancy('hello world', 'hello world')).toBe(1);
});
test('short fully contained in long → 1.0', () => {
expect(detectRedundancy('RTK analisado', 'RTK (Rust Token Killer) analisado em detalhe'))
.toBe(1);
});
test('word overlap ratio', () => {
const r = detectRedundancy('um dois três', 'um dois quatro');
expect(r).toBeGreaterThan(0.6);
expect(r).toBeLessThan(0.7);
});
test('no overlap → 0', () => {
expect(detectRedundancy('alpha beta', 'gamma delta')).toBe(0);
});
test('isRedundant uses threshold', () => {
expect(isRedundant('um dois', 'um dois três', 0.6)).toBe(true);
expect(isRedundant('completamente diferente', 'outro texto', 0.6)).toBe(false);
});
});
describe('compactTimestamp', () => {
test('default minute precision trims to 16 chars', () => {
expect(compactTimestamp('2026-04-20T20:59:17.178180+00:00'))
.toBe('2026-04-20T20:59');
});
test('normalizes space to T', () => {
expect(compactTimestamp('2026-04-20 20:59:17+00:00'))
.toBe('2026-04-20T20:59');
});
test('honors precision', () => {
expect(compactTimestamp('2026-04-20T20:59:17', 'day')).toBe('2026-04-20');
expect(compactTimestamp('2026-04-20T20:59:17', 'hour')).toBe('2026-04-20T20');
expect(compactTimestamp('2026-04-20T20:59:17', 'second')).toBe('2026-04-20T20:59:17');
});
test('null for empty input', () => {
expect(compactTimestamp(null)).toBeNull();
expect(compactTimestamp('')).toBeNull();
});
});
describe('compactRecord', () => {
test('drops redundant summary when content covers it', () => {
const r = compactRecord({
id: '1',
summary: 'RTK analisado',
content: 'RTK (Rust Token Killer) analisado em detalhes',
}, {
redundantPairs: [['summary', 'content']],
});
expect(r.summary).toBeUndefined();
expect(r.content).toContain('RTK');
});
test('keeps summary when it adds info', () => {
const r = compactRecord({
summary: 'Previne injection',
content: 'A função sanitiza input de usuário.',
}, { redundantPairs: [['summary', 'content']] });
expect(r.summary).toBe('Previne injection');
});
test('drops listed fields', () => {
const r = compactRecord(
{ id: '1', internal_id: 'x', updated_at: '...' },
{ dropFields: ['internal_id', 'updated_at'] },
);
expect(r.internal_id).toBeUndefined();
expect(r.updated_at).toBeUndefined();
expect(r.id).toBe('1');
});
test('whitelist wins — drops everything else', () => {
const r = compactRecord(
{ id: '1', a: 2, b: 3, c: 4 },
{ whitelistFields: ['id', 'a'] },
);
expect(Object.keys(r).sort()).toEqual(['a', 'id']);
});
test('truncates timestamps in listed fields', () => {
const r = compactRecord(
{ created_at: '2026-04-20T20:59:17.178180+00:00' },
{ timestampFields: ['created_at'] },
);
expect(r.created_at).toBe('2026-04-20T20:59');
});
test('strips tag prefix redundancy', () => {
const r = compactRecord(
{ tags: ['project:omniforge', 'category:arch', 'priority:high'] },
{ stripTagPrefixes: ['project:'] },
);
expect(r.tags).toEqual(['category:arch', 'priority:high']);
});
test('removes tags field when all tags were stripped', () => {
const r = compactRecord(
{ tags: ['project:foo'] },
{ stripTagPrefixes: ['project:'] },
);
expect((r as Record<string, unknown>).tags).toBeUndefined();
});
test('does not mutate input', () => {
const input = { id: '1', internal_id: 'x' };
const r = compactRecord(input, { dropFields: ['internal_id'] });
expect(input.internal_id).toBe('x');
expect((r as Record<string, unknown>).internal_id).toBeUndefined();
});
});
describe('compactRecords', () => {
test('maps across a list', () => {
const rs = compactRecords(
[{ a: 1, b: 2 }, { a: 3, b: 4 }],
{ dropFields: ['b'] },
);
expect(rs).toEqual([{ a: 1 }, { a: 3 }]);
});
});
describe('compressContext', () => {
test('returns input unchanged when under budget', () => {
const items = Array.from({ length: 3 }, (_, i) => ({
content: 'short',
summary: 's',
id: i,
}));
const r = compressContext(items, { maxTokens: 1000, keepFullFirst: 5 });
expect(r.compressed).toBe(false);
expect(r.items.length).toBe(3);
});
test('compresses beyond keepFullFirst when over budget', () => {
const longContent = 'x'.repeat(3000);
const items = Array.from({ length: 10 }, (_, i) => ({
content: longContent,
summary: `summary ${i}`,
id: i,
}));
const r = compressContext(items, {
maxTokens: 1000,
keepFullFirst: 3,
});
expect(r.compressed).toBe(true);
expect((r.items[0] as Record<string, unknown>)._compressed).toBeUndefined();
expect((r.items[2] as Record<string, unknown>)._compressed).toBeUndefined();
expect((r.items[3] as Record<string, unknown>)._compressed).toBe(true);
expect((r.items[3] as Record<string, unknown>).content).toBe('summary 3');
});
test('emits telemetry when asked', () => {
const items = Array.from({ length: 10 }, (_, i) => ({
content: 'x'.repeat(3000),
summary: `s${i}`,
id: i,
}));
const r = compressContext(items, {
maxTokens: 1000,
keepFullFirst: 3,
telemetry: true,
});
expect(r.metrics).toBeDefined();
expect(r.metrics!.reductionPercent).toBeGreaterThan(30);
});
});
describe('compactSecret', () => {
test('returns only whitelisted fields — never value', () => {
// Fixture sanitized — never use real tokens in tests. See CLAUDE.md #5.
const secret = {
key: 'example_api_token',
value: 'FAKE_TEST_TOKEN_DO_NOT_USE',
description: 'Exemplo sintético para teste',
category: 'api',
created_at: '2026-01-01',
};
const safe = compactSecret(secret, {
whitelist: ['key', 'description', 'category'],
});
expect(Object.keys(safe).sort()).toEqual(['category', 'description', 'key']);
expect((safe as Record<string, unknown>).value).toBeUndefined();
});
test('compactSecrets on a list', () => {
const rs = compactSecrets(
[{ key: 'a', value: 'FAKE_A' }, { key: 'b', value: 'FAKE_B' }],
{ whitelist: ['key'] },
);
expect(rs).toEqual([{ key: 'a' }, { key: 'b' }]);
});
});
describe('compactRecordWithTelemetry', () => {
test('returns value and metrics', () => {
const { value, metrics } = compactRecordWithTelemetry(
{
id: '1',
summary: 'dupe',
content: 'dupe completa com muito texto redundante',
extra: 'remover',
},
{
redundantPairs: [['summary', 'content']],
dropFields: ['extra'],
},
);
expect((value as Record<string, unknown>).summary).toBeUndefined();
expect((value as Record<string, unknown>).extra).toBeUndefined();
expect(metrics.tokensBefore).toBeGreaterThan(metrics.tokensAfter);
expect(metrics.reductionPercent).toBeGreaterThan(0);
});
});
describe('estimateObjectTokens', () => {
test('estimates JSON serialization size', () => {
const obj = { a: 'hello', b: 'world' };
const n = estimateObjectTokens(obj);
expect(n).toBeGreaterThan(0);
});
});

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{
"extends": "./tsconfig.json",
"compilerOptions": {
"rootDir": "./src/ts"
},
"include": ["src/ts/**/*"],
"exclude": ["tests/**/*", "benchmarks/**/*"]
}

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{
"compilerOptions": {
"target": "ES2022",
"module": "ESNext",
"moduleResolution": "Bundler",
"lib": ["ES2022"],
"strict": true,
"noUncheckedIndexedAccess": true,
"esModuleInterop": true,
"skipLibCheck": true,
"resolveJsonModule": true,
"isolatedModules": true,
"declaration": true,
"sourceMap": true,
"outDir": "./dist",
"types": ["node"]
},
"include": ["src/ts/**/*", "tests/ts/**/*"]
}

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import { defineConfig } from 'vitest/config';
export default defineConfig({
test: {
include: ['tests/ts/**/*.test.ts'],
reporters: ['default'],
globals: false,
testTimeout: 10_000,
},
});