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Unit - Convert between units

Unit​

This documentation provides complete coverage of the Unit class, a comprehensive unit conversion utility that supports conversions between various measurement systems.

Table of Contents​

Constructor​

Signature​

constructor(value: number, unit?: UnitKey)

Parameters​

  • value: Numeric value to convert
  • unit: Optional unit type (e.g., 'kg', 'm', 'kb')

Behavior​

  • Stores value and unit for instance methods
  • Unit parameter is optional for generic conversions

Example​

new Unit(100, 'kg'); // 100 kilograms
new Unit(32, 'F');   // 32 degrees Fahrenheit

Type Definitions​

UnitKey​

type UnitKey = keyof typeof UNITS;

Supported unit abbreviations (e.g., 'kg', 'm', 'F')

UnitLabel​

type UnitLabel = (typeof UNITS)[UnitKey];

Full names of units (e.g., 'Kilogram', 'Meter')

SIPrefix​

type SIPrefix = keyof typeof PREFIX_MULTIPLIERS;

Scientific prefixes (e.g., 'k', 'm', 'M')

UnitNumberMethods​

type UnitNumberMethods = {
  [K in keyof typeof Unit]: (typeof Unit)[K] extends (
    (value: number) => number
  ) ? K : never;
}[keyof typeof Unit];

Type-safe names of static conversion methods

UNITS​

const UNITS = {
  // Length
  m: 'Meter',
  km: 'Kilometer',
  // ...etc
};

Mapping of unit abbreviations to full names

PREFIX_MULTIPLIERS​

const PREFIX_MULTIPLIERS = {
  y: 1e-24,
  z: 1e-21,
  // ...etc
};

Scientific prefix multipliers