lib.cost-tracking

@lssm-tech/lib.cost-tracking

Website: https://contractspec.io

API cost tracking and budgeting.

What It Provides

• Layer: lib.
• Consumers: bundles.
• Related ContractSpec packages include @lssm-tech/tool.bun, @lssm-tech/tool.typescript.
• Related ContractSpec packages include @lssm-tech/tool.bun, @lssm-tech/tool.typescript.

Installation

npm install @lssm-tech/lib.cost-tracking

or

bun add @lssm-tech/lib.cost-tracking

Usage

Import the root entrypoint from @lssm-tech/lib.cost-tracking. The current package export map exposes only the root . entrypoint, so consumers should avoid undocumented subpath imports.

Architecture

• src/budget-alert-manager.ts is part of the package's public or composition surface.
• src/cost-model.ts is part of the package's public or composition surface.
• src/cost-tracker.ts is part of the package's public or composition surface.
• src/exact-cost-calculator.ts deterministically multiplies integer usage by exact minor-unit or decimal-string rate cards.
• src/economic-evidence*.ts provides additive neutral economic evidence helpers backed by @lssm-tech/lib.economic-evidence.
• src/index.ts is the root public barrel and package entrypoint.
• src/optimization-recommender.ts is part of the package's public or composition surface.
• src/types.ts is shared public type definitions.

Public Entry Points

• Export . resolves through ./src/index.ts.
• Economic evidence helpers are exported from the root entrypoint; keep subpath imports undocumented until the package export map intentionally changes.

Local Commands

• bun run dev — contractspec-bun-build dev
• bun run build — contractspec-bun-build build
• bun run test — bun test --pass-with-no-tests
• bun run lint — bun lint:fix
• bun run lint:check — biome check .
• bun run lint:fix — biome check --write --unsafe --only=nursery/useSortedClasses . && biome check --write .
• bun run typecheck — tsgo --noEmit
• bun run publish:pkg — bun publish --tolerate-republish --ignore-scripts --verbose
• bun run publish:pkg:canary — bun publish:pkg --tag canary
• bun run clean — rimraf dist .turbo
• bun run build:bundle — contractspec-bun-build transpile
• bun run build:types — contractspec-bun-build types
• bun run prebuild — contractspec-bun-build prebuild

Recent Updates

• Add neutral economic evidence bridge helpers that emit usage, cost, budget, and optimization projection refs without changing existing cost calculation semantics.
• Replace eslint+prettier by biomejs to optimize speed.

Notes

• Cost calculation logic must stay deterministic — no side effects or external calls during computation.
• Budget threshold types are shared across consumers; changes require coordination.
• Do not introduce floating-point arithmetic where precision matters; use integer cents or a decimal library.
• Existing number-based cost totals are exposed to economic evidence as estimated_decimal_string values so downstream billing/finance surfaces cannot mistake them for exact money ledgers.
• New authoritative paths should use calculateExactCostLinesV1; the existing number-based tracker remains a compatibility estimate calculator.