API Overview

All exports from @wzo/calc, grouped by purpose:

Expression / Formatting

• calc(expr, options?) — for computation: expression evaluation + (optional) formatting, throws on error
• fmt(value, options?) — for display: a display-safe version of calc (supports arithmetic + formatting), falls back to _error on error

Chaining

• chainAdd / chainSub / chainMul / chainDiv — chainable arithmetic, e.g. chainAdd(10).sub(3).mul(2)()

Standalone Functions

• add / sub / mul / div / sqrt / pow / mod — return number
• addStr / … / sqrtStr / powStr / modStr — return high-precision string

Aggregation

• calcSum / calcAvg / calcMedian / calcMax / calcMin — array / object-array aggregation

Global Config

• setConfig / resetConfig / getConfig — global: error fallback, default format, division precision
• Per-call precision: div / divStr / chainDiv / calcAvg accept { _precision } as a trailing argument to override precision for that call only