{
  "id": "logistics",
  "title": "Logistics, shipping and freight",
  "summary": "Ship goods: chargeable weight, freight and delivery rates, delivery dates, containers and pallets, labels, route distance, Incoterms, customs duty and demurrage.",
  "synonyms": [
    "shipping",
    "freight",
    "freight forwarding",
    "courier",
    "parcels",
    "delivery",
    "haulage",
    "transport management",
    "TMS",
    "customs",
    "import",
    "export",
    "supply chain",
    "3PL"
  ],
  "apps": [
    "shipping app",
    "freight quoting tool",
    "courier booking system",
    "delivery management system",
    "transport management system",
    "freight forwarder software",
    "customs and import calculator"
  ],
  "language": "typescript",
  "includes": [
    "money-basics",
    "dates-basics"
  ],
  "includedBy": [],
  "caveats": [
    "Customs duty and import VAT figures are estimates from the rates you supply; the declaration and the tariff classification are the importer's responsibility."
  ],
  "sections": [
    {
      "key": "rating",
      "title": "Rating and quoting",
      "purpose": "Work out what a shipment costs to send.",
      "from": "logistics",
      "members": [
        {
          "id": "retail.volumetric-weight",
          "tier": "core",
          "why": "Chargeable weight: the greater of actual and volumetric weight, rounded up to a billing step.",
          "section": "rating",
          "from": "logistics",
          "version": "1.0.0",
          "summary": "Chargeable parcel weight: the greater of actual and volumetric (dimensional) weight, rounded up to a billing step.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "chargeableWeight"
          ],
          "signatures": [
            "export function chargeableWeight(lengthMm: number, widthMm: number, heightMm: number, actualGrams: number, divisor: number, roundUpToGrams: number): ChargeableWeight"
          ],
          "reference": "import { chargeableWeight } from \"#fune/retail.volumetric-weight@^1\";",
          "url": "http://www.functionalweave.com/functions/retail.volumetric-weight"
        },
        {
          "id": "logistics.freight-rate",
          "tier": "core",
          "why": "Freight charge from a carrier's dated weight-break tariff for a zone, with the fuel surcharge.",
          "section": "rating",
          "from": "logistics",
          "version": "1.0.1",
          "summary": "Freight charge from a carrier's dated weight-break tariff for a zone, with the fuel surcharge in force on the ship date.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "freightRate"
          ],
          "signatures": [
            "export function freightRate(rates: readonly FreightRate[], fuelSurcharges: readonly FuelSurcharge[], zone: string, chargeableGrams: number, shipDate: string): FreightQuote"
          ],
          "reference": "import { freightRate } from \"#fune/logistics.freight-rate@^1\";",
          "url": "http://www.functionalweave.com/functions/logistics.freight-rate"
        },
        {
          "id": "retail.shipping-rate",
          "tier": "optional",
          "why": "Parcel delivery charge from a rate table by service, zone and weight, with a free-over threshold.",
          "section": "rating",
          "from": "logistics",
          "version": "1.0.1",
          "summary": "Delivery charge from a dated rate table by service, zone, chargeable weight and size, with a free-over threshold.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "shippingRate"
          ],
          "signatures": [
            "export function shippingRate(bands: readonly ShippingBand[], service: string, zone: string, parcel: Parcel, basketTotal: Money, onDate: string): ShippingQuote"
          ],
          "reference": "import { shippingRate } from \"#fune/retail.shipping-rate@^1\";",
          "url": "http://www.functionalweave.com/functions/retail.shipping-rate"
        },
        {
          "id": "units.convert",
          "tier": "optional",
          "why": "Converts kg, lb, cm and inches exactly, for shippers' mixed units.",
          "section": "rating",
          "from": "logistics",
          "version": "1.0.0",
          "summary": "Convert length, mass, area, volume, temperature and energy between units, exactly, as decimal text.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "convertUnits"
          ],
          "signatures": [
            "export function convertUnits(value: string, fromUnit: string, toUnit: string, decimals: number): string"
          ],
          "reference": "import { convertUnits } from \"#fune/units.convert@^1\";",
          "url": "http://www.functionalweave.com/functions/units.convert"
        }
      ],
      "gaps": [
        {
          "key": "carrier-apis",
          "text": "Live rates, booking and labels from carriers' APIs (DHL, UPS, Royal Mail, DPD) are network work and not in caps.",
          "section": "rating",
          "from": "logistics"
        }
      ]
    },
    {
      "key": "dates",
      "title": "Dispatch and delivery dates",
      "purpose": "Promise delivery dates the operation can keep.",
      "from": "logistics",
      "members": [
        {
          "id": "logistics.delivery-date",
          "tier": "core",
          "why": "Dispatch and delivery dates from order time, cut-off, service days, weekends and UK bank holidays.",
          "section": "dates",
          "from": "logistics",
          "version": "1.0.0",
          "summary": "Estimated dispatch and delivery dates from order time, dispatch cut-off, service days, weekends and UK bank holidays.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "deliveryDate"
          ],
          "signatures": [
            "export function deliveryDate(orderDate: string, orderTime: string, cutOff: string, serviceDays: number, region: UkRegion | null, closures: readonly string[]): DeliveryEstimate"
          ],
          "reference": "import { deliveryDate } from \"#fune/logistics.delivery-date@^1\";",
          "url": "http://www.functionalweave.com/functions/logistics.delivery-date"
        }
      ],
      "gaps": [
        {
          "key": "tracking",
          "text": "Tracking events and proof of delivery from carriers, and notifying customers.",
          "section": "dates",
          "from": "logistics"
        }
      ]
    },
    {
      "key": "loads",
      "title": "Loads and labels",
      "purpose": "Plan how goods are packed and label them.",
      "from": "logistics",
      "members": [
        {
          "id": "logistics.sscc",
          "tier": "core",
          "why": "Builds an 18-digit SSCC pallet number with its check digit for GS1 labels.",
          "section": "loads",
          "from": "logistics",
          "version": "1.1.0",
          "summary": "Build an 18-digit SSCC pallet label number from extension digit, GS1 company prefix and serial, with its check digit.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "buildSscc"
          ],
          "signatures": [
            "export function buildSscc(extensionDigit: number, companyPrefix: string, serialReference: number): string"
          ],
          "reference": "import { buildSscc } from \"#fune/logistics.sscc@^1\";",
          "url": "http://www.functionalweave.com/functions/logistics.sscc"
        },
        {
          "id": "logistics.container-fit",
          "tier": "optional",
          "why": "How many cartons fit a 20ft, 40ft or high-cube container or a trailer, by space and weight.",
          "section": "loads",
          "from": "logistics",
          "version": "1.0.0",
          "summary": "How many identical cartons fit in a 20ft, 40ft or 40ft high-cube container or a 13.6 m trailer, by space and by weight.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "containerFit"
          ],
          "signatures": [
            "export function containerFit(container: string, lengthMm: number, widthMm: number, heightMm: number, cartonGrams: number, keepUpright: boolean, maxPayloadKg: number | null): ContainerFit"
          ],
          "reference": "import { containerFit } from \"#fune/logistics.container-fit@^1\";",
          "url": "http://www.functionalweave.com/functions/logistics.container-fit"
        },
        {
          "id": "inventory.pallet-fit",
          "tier": "optional",
          "why": "Cartons per layer and per pallet within height and weight limits.",
          "section": "loads",
          "from": "logistics",
          "version": "1.0.0",
          "summary": "How many cartons fit per layer and per pallet (UK 1200x1000 or EUR 1200x800), within a height and weight limit.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "palletFit"
          ],
          "signatures": [
            "export function palletFit(carton: Carton, pallet: PalletType, maxLoadHeightMm: number, maxLoadWeightGrams: number | null, upright: boolean): PalletFit"
          ],
          "reference": "import { palletFit } from \"#fune/inventory.pallet-fit@^1\";",
          "url": "http://www.functionalweave.com/functions/inventory.pallet-fit"
        },
        {
          "id": "validation.gtin",
          "tier": "optional",
          "why": "Checks the barcode numbers on cartons and items.",
          "section": "loads",
          "from": "logistics",
          "version": "1.1.0",
          "summary": "Check an EAN-8, UPC-A, EAN-13 or GTIN-14 barcode number against the GS1 mod-10 check digit.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "validateGtin"
          ],
          "signatures": [
            "export function validateGtin(value: string): GtinCheck"
          ],
          "reference": "import { validateGtin } from \"#fune/validation.gtin@^1\";",
          "url": "http://www.functionalweave.com/functions/validation.gtin"
        }
      ],
      "gaps": [
        {
          "key": "label-printing",
          "text": "Rendering the label itself (GS1-128 barcodes, ZPL for thermal printers) is yours.",
          "section": "loads",
          "from": "logistics"
        }
      ]
    },
    {
      "key": "routes",
      "title": "Routes",
      "purpose": "Measure the distance of a planned run.",
      "from": "logistics",
      "members": [
        {
          "id": "logistics.route-distance",
          "tier": "optional",
          "why": "Total great-circle distance of an ordered list of stops, leg by leg.",
          "section": "routes",
          "from": "logistics",
          "version": "1.0.0",
          "summary": "Total great-circle distance of an ordered list of stops, leg by leg, optionally back to the start, to the millimetre.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "routeDistance"
          ],
          "signatures": [
            "export function routeDistance(stops: readonly GeoPoint[], returnToStart: boolean): RouteDistance"
          ],
          "reference": "import { routeDistance } from \"#fune/logistics.route-distance@^1\";",
          "url": "http://www.functionalweave.com/functions/logistics.route-distance"
        },
        {
          "id": "geo.distance",
          "tier": "optional",
          "why": "Great-circle distance between two points.",
          "section": "routes",
          "from": "logistics",
          "version": "2.0.0",
          "summary": "Great-circle distance in metres between two latitude/longitude points (haversine), to the millimetre.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "distance"
          ],
          "signatures": [
            "export function distance(fromLat: number, fromLng: number, toLat: number, toLng: number): number"
          ],
          "reference": "import { distance } from \"#fune/geo.distance@^2\";",
          "url": "http://www.functionalweave.com/functions/geo.distance"
        }
      ],
      "gaps": [
        {
          "key": "route-optimisation",
          "text": "Ordering stops to minimise distance or meet time windows, and road distances rather than straight lines.",
          "section": "routes",
          "from": "logistics"
        },
        {
          "key": "geocoding",
          "text": "Turning addresses into coordinates is network work and not in caps.",
          "section": "routes",
          "from": "logistics"
        }
      ]
    },
    {
      "key": "customs",
      "title": "International trade",
      "purpose": "Know who pays for what and what an import will cost at the border.",
      "from": "logistics",
      "members": [
        {
          "id": "logistics.incoterm-responsibility",
          "tier": "core",
          "why": "Who pays which costs and where risk passes under an Incoterms 2020 rule.",
          "section": "customs",
          "from": "logistics",
          "version": "1.0.1",
          "summary": "Who pays which costs and where risk passes under an Incoterms 2020 rule, from EXW to DDP, FOB and CIF.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "incotermResponsibility"
          ],
          "signatures": [
            "export function incotermResponsibility(rule: string, edition: number): IncotermResponsibility"
          ],
          "reference": "import { incotermResponsibility } from \"#fune/logistics.incoterm-responsibility@^1\";",
          "url": "http://www.functionalweave.com/functions/logistics.incoterm-responsibility"
        },
        {
          "id": "logistics.duty-estimate",
          "tier": "optional",
          "why": "Estimates import duty and import VAT on a CIF customs value at the duty rate you supply.",
          "section": "customs",
          "from": "logistics",
          "version": "1.0.1",
          "summary": "Estimate import duty and import VAT on goods: customs value on a CIF basis, the caller's duty rate, VAT on top.",
          "status": "unreviewed",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "dutyEstimate"
          ],
          "signatures": [
            "export function dutyEstimate(goods: Money, freight: Money, insurance: Money, dutyBasisPoints: number, vatAdditions: Money, jurisdiction: string, vatCategory: string, importDate: string, rounding: RoundingMode): DutyEstimate"
          ],
          "reference": "import { dutyEstimate } from \"#fune/logistics.duty-estimate@^1\";",
          "url": "http://www.functionalweave.com/functions/logistics.duty-estimate"
        },
        {
          "id": "logistics.hs-code-validate",
          "tier": "optional",
          "why": "Checks the format of an HS, CN or UK commodity code.",
          "section": "customs",
          "from": "logistics",
          "version": "1.0.0",
          "summary": "Check the format of a commodity code: 6-digit HS, 8-digit CN or 10-digit TARIC/UK code, with chapter and heading checks.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "validateHsCode"
          ],
          "signatures": [
            "export function validateHsCode(value: string): HsCodeCheck"
          ],
          "reference": "import { validateHsCode } from \"#fune/logistics.hs-code-validate@^1\";",
          "url": "http://www.functionalweave.com/functions/logistics.hs-code-validate"
        },
        {
          "id": "money.convert",
          "tier": "optional",
          "why": "Converts invoice values at the customs exchange rate you hold.",
          "section": "customs",
          "from": "logistics",
          "version": "1.0.0",
          "summary": "Convert an amount to another currency at a supplied exact rate, with an explicit rounding mode.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "convertMoney"
          ],
          "signatures": [
            "export function convertMoney(amount: Money, rate: ExchangeRate, mode: RoundingMode): Money"
          ],
          "reference": "import { convertMoney } from \"#fune/money.convert@^1\";",
          "url": "http://www.functionalweave.com/functions/money.convert"
        }
      ],
      "gaps": [
        {
          "key": "tariff-lookup",
          "text": "The duty rate for a commodity code (UK Trade Tariff, TARIC): you supply it; caps does not hold the tariff.",
          "section": "customs",
          "from": "logistics"
        },
        {
          "key": "customs-declarations",
          "text": "Filing declarations (CDS, ENS) with customs is not in caps.",
          "section": "customs",
          "from": "logistics"
        }
      ]
    },
    {
      "key": "charges",
      "title": "Port charges",
      "purpose": "Charge containers kept beyond their free days.",
      "from": "logistics",
      "members": [
        {
          "id": "logistics.demurrage",
          "tier": "optional",
          "why": "Demurrage or detention charge: free days, then a tiered daily rate.",
          "section": "charges",
          "from": "logistics",
          "version": "1.0.0",
          "summary": "Demurrage or detention charge for a container: free days, then a tiered daily rate from the carrier's tariff.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "demurrage"
          ],
          "signatures": [
            "export function demurrage(startDate: string, endDate: string, freeDays: number, tiers: readonly DemurrageTier[]): DemurrageCharge"
          ],
          "reference": "import { demurrage } from \"#fune/logistics.demurrage@^1\";",
          "url": "http://www.functionalweave.com/functions/logistics.demurrage"
        }
      ],
      "gaps": []
    },
    {
      "key": "amounts",
      "title": "Amounts",
      "purpose": "Hold money as currency-tagged integer minor units and do plain arithmetic on it safely.",
      "from": "money-basics",
      "members": [
        {
          "id": "money.amount",
          "tier": "core",
          "why": "The Money type ({ minor, currency }) every other money capability takes and returns.",
          "section": "amounts",
          "from": "money-basics",
          "version": "1.0.2",
          "summary": "A currency-tagged monetary amount held in integer minor units.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "money"
          ],
          "signatures": [
            "export function money(minor: number, currency: string): Money"
          ],
          "reference": "import { money } from \"#fune/money.amount@^1\";",
          "url": "http://www.functionalweave.com/functions/money.amount"
        },
        {
          "id": "money.add",
          "tier": "core",
          "why": "Adds and subtracts amounts, refusing to mix currencies by accident.",
          "section": "amounts",
          "from": "money-basics",
          "version": "1.0.1",
          "summary": "Add, subtract and negate monetary amounts, refusing to mix currencies.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "addMoney"
          ],
          "signatures": [
            "export function addMoney(a: Money, b: Money): Money"
          ],
          "reference": "import { addMoney } from \"#fune/money.add@^1\";",
          "url": "http://www.functionalweave.com/functions/money.add"
        },
        {
          "id": "money.sum",
          "tier": "core",
          "why": "Totals a list of amounts, with an explicit currency for an empty list.",
          "section": "amounts",
          "from": "money-basics",
          "version": "1.0.1",
          "summary": "Total a list of monetary amounts, with an explicit currency for the empty case.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "sumMoney"
          ],
          "signatures": [
            "export function sumMoney(amounts: readonly Money[], currency: string): Money"
          ],
          "reference": "import { sumMoney } from \"#fune/money.sum@^1\";",
          "url": "http://www.functionalweave.com/functions/money.sum"
        },
        {
          "id": "money.compare",
          "tier": "core",
          "why": "Compares, mins, maxes and clamps amounts of one currency without unwrapping them.",
          "section": "amounts",
          "from": "money-basics",
          "version": "2.0.0",
          "summary": "Compare two amounts of one currency, refusing to compare across currencies; min, max and clamp too.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": true,
          "functions": [
            "compareMoney",
            "minMoney",
            "maxMoney",
            "clampMoney"
          ],
          "signatures": [
            "export function compareMoney(a: Money, b: Money): number",
            "export function minMoney(a: Money, b: Money): Money",
            "export function maxMoney(a: Money, b: Money): Money",
            "export function clampMoney(amount: Money, min: Money, max: Money): Money"
          ],
          "reference": "import { compareMoney, minMoney, maxMoney, clampMoney } from \"#fune/money.compare@^2\";",
          "url": "http://www.functionalweave.com/functions/money.compare"
        }
      ],
      "gaps": []
    },
    {
      "key": "rates",
      "title": "Rates and rounding",
      "purpose": "Apply percentages and divide amounts with the rounding stated, never a float.",
      "from": "money-basics",
      "members": [
        {
          "id": "money.apply-rate",
          "tier": "core",
          "why": "Applies a basis-point rate (VAT, discount, commission) to an amount with explicit rounding.",
          "section": "rates",
          "from": "money-basics",
          "version": "1.0.1",
          "summary": "Apply a rate expressed in basis points to a monetary amount, with an explicit rounding mode.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "applyRate"
          ],
          "signatures": [
            "export function applyRate(amount: Money, basisPoints: number, mode: RoundingMode): Money"
          ],
          "reference": "import { applyRate } from \"#fune/money.apply-rate@^1\";",
          "url": "http://www.functionalweave.com/functions/money.apply-rate"
        },
        {
          "id": "math.round-div",
          "tier": "core",
          "why": "Integer division with a named rounding mode, for any money maths the others do not cover.",
          "section": "rates",
          "from": "money-basics",
          "version": "1.0.0",
          "summary": "Integer division with an explicit rounding mode, for money arithmetic that must not drift.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "roundDiv"
          ],
          "signatures": [
            "export function roundDiv(numerator: number, denominator: number, mode: RoundingMode): number"
          ],
          "reference": "import { roundDiv } from \"#fune/math.round-div@^1\";",
          "url": "http://www.functionalweave.com/functions/math.round-div"
        },
        {
          "id": "math.basis-points",
          "tier": "optional",
          "why": "Converts \"12.5%\" to and from basis points exactly, for rates typed in by users.",
          "section": "rates",
          "from": "money-basics",
          "version": "2.0.0",
          "summary": "Convert a rate between percent, basis points and a plain ratio exactly, as decimal text or integer basis points.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": true,
          "functions": [
            "convertRate",
            "toBasisPoints",
            "fromBasisPoints"
          ],
          "signatures": [
            "export function convertRate(value: string, fromUnit: RateUnit, toUnit: RateUnit): string",
            "export function toBasisPoints(value: string, unit: RateUnit): number",
            "export function fromBasisPoints(basisPoints: number, unit: RateUnit): string"
          ],
          "reference": "import { convertRate, toBasisPoints, fromBasisPoints } from \"#fune/math.basis-points@^2\";",
          "url": "http://www.functionalweave.com/functions/math.basis-points"
        },
        {
          "id": "math.percent-change",
          "tier": "optional",
          "why": "Percentage change between two figures in basis points, for \"up 4.2% on last month\".",
          "section": "rates",
          "from": "money-basics",
          "version": "1.0.0",
          "summary": "Percentage change from one value to another, in basis points, with an explicit rounding mode.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "percentChange"
          ],
          "signatures": [
            "export function percentChange(fromValue: number, toValue: number, mode: RoundingMode): number | null"
          ],
          "reference": "import { percentChange } from \"#fune/math.percent-change@^1\";",
          "url": "http://www.functionalweave.com/functions/math.percent-change"
        },
        {
          "id": "math.rational",
          "tier": "optional",
          "why": "Exact fractions for rates that must not drift across many steps.",
          "section": "rates",
          "from": "money-basics",
          "version": "2.0.0",
          "summary": "Exact fraction arithmetic, always reduced, for rates and ratios that must not drift.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": true,
          "functions": [
            "calculateRational",
            "rational",
            "addRational",
            "subtractRational",
            "multiplyRational",
            "divideRational",
            "compareRational",
            "rationalToInteger"
          ],
          "signatures": [
            "export function calculateRational(a: Rational, op: RationalOp, b: Rational): Rational",
            "export function rational(numerator: number, denominator: number): Rational",
            "export function addRational(a: Rational, b: Rational): Rational",
            "export function subtractRational(a: Rational, b: Rational): Rational",
            "export function multiplyRational(a: Rational, b: Rational): Rational",
            "export function divideRational(a: Rational, b: Rational): Rational",
            "export function compareRational(a: Rational, b: Rational): number",
            "export function rationalToInteger(r: Rational, mode: RoundingMode): number"
          ],
          "reference": "import { calculateRational, rational, addRational, subtractRational, multiplyRational, divideRational, compareRational, rationalToInteger } from \"#fune/math.rational@^2\";",
          "url": "http://www.functionalweave.com/functions/math.rational"
        },
        {
          "id": "math.round-div-big",
          "tier": "optional",
          "why": "Rounded division on numbers past 2^53, for very large totals.",
          "section": "rates",
          "from": "money-basics",
          "version": "1.0.0",
          "summary": "Divide two integers of any size with an explicit rounding mode, on decimal strings, for exact money sums past 2^53.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "roundDivBig"
          ],
          "signatures": [
            "export function roundDivBig(numerator: string, denominator: string, mode: RoundingMode): string"
          ],
          "reference": "import { roundDivBig } from \"#fune/math.round-div-big@^1\";",
          "url": "http://www.functionalweave.com/functions/math.round-div-big"
        }
      ],
      "gaps": []
    },
    {
      "key": "splitting",
      "title": "Splitting",
      "purpose": "Divide an amount between people, periods or lines so the parts add back to the whole.",
      "from": "money-basics",
      "members": [
        {
          "id": "money.allocate",
          "tier": "core",
          "why": "Splits an amount by ratios (60/40, by quantity) without losing or inventing a penny.",
          "section": "splitting",
          "from": "money-basics",
          "version": "1.0.1",
          "summary": "Split an amount across ratios without losing or inventing a single minor unit.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "allocate"
          ],
          "signatures": [
            "export function allocate(amount: Money, ratios: readonly number[]): readonly Money[]"
          ],
          "reference": "import { allocate } from \"#fune/money.allocate@^1\";",
          "url": "http://www.functionalweave.com/functions/money.allocate"
        },
        {
          "id": "money.split-even",
          "tier": "optional",
          "why": "Splits an amount into n near-equal parts that sum exactly, for instalments or shares.",
          "section": "splitting",
          "from": "money-basics",
          "version": "1.0.0",
          "summary": "Split an amount into n near-equal parts that add back up to exactly the whole.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "splitEven"
          ],
          "signatures": [
            "export function splitEven(amount: Money, parts: number): readonly Money[]"
          ],
          "reference": "import { splitEven } from \"#fune/money.split-even@^1\";",
          "url": "http://www.functionalweave.com/functions/money.split-even"
        }
      ],
      "gaps": []
    },
    {
      "key": "display",
      "title": "Display and input",
      "purpose": "Show amounts to people and read what they type.",
      "from": "money-basics",
      "members": [
        {
          "id": "money.format",
          "tier": "core",
          "why": "Renders an amount as text with the currency's real number of decimal places.",
          "section": "display",
          "from": "money-basics",
          "version": "1.0.0",
          "summary": "Render a monetary amount as text, using the currency's real minor-unit precision.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "formatMoney"
          ],
          "signatures": [
            "export function formatMoney(amount: Money): string"
          ],
          "reference": "import { formatMoney } from \"#fune/money.format@^1\";",
          "url": "http://www.functionalweave.com/functions/money.format"
        },
        {
          "id": "money.parse",
          "tier": "optional",
          "why": "Reads \"£1,234.50\" or \"1.234,50 €\" typed by a user into minor units, strictly.",
          "section": "display",
          "from": "money-basics",
          "version": "1.0.0",
          "summary": "Parse \"£1,234.50\" or \"1.234,50 €\" into integer minor units, strictly: no guessing, no rounding.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "parseMoney"
          ],
          "signatures": [
            "export function parseMoney(text: string, currency: string, style: NumberStyle): Money"
          ],
          "reference": "import { parseMoney } from \"#fune/money.parse@^1\";",
          "url": "http://www.functionalweave.com/functions/money.parse"
        },
        {
          "id": "money.currency-digits",
          "tier": "optional",
          "why": "How many decimal places each ISO 4217 currency has, for input boxes and validation.",
          "section": "display",
          "from": "money-basics",
          "version": "1.0.0",
          "summary": "How many decimal places a currency's minor unit has, from the ISO 4217 list.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "currencyDigits"
          ],
          "signatures": [
            "export function currencyDigits(currency: string): number"
          ],
          "reference": "import { currencyDigits } from \"#fune/money.currency-digits@^1\";",
          "url": "http://www.functionalweave.com/functions/money.currency-digits"
        }
      ],
      "gaps": []
    },
    {
      "key": "date-arithmetic",
      "title": "Calendar arithmetic",
      "purpose": "Move and measure ISO dates exactly, with no date library and no clock reads.",
      "from": "dates-basics",
      "members": [
        {
          "id": "dates.add-days",
          "tier": "core",
          "why": "Shifts a date by whole days, for due dates and windows.",
          "section": "date-arithmetic",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Shift an ISO date by a whole number of days, forwards or backwards, with exact calendar arithmetic.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "addDays"
          ],
          "signatures": [
            "export function addDays(iso: string, days: number): string"
          ],
          "reference": "import { addDays } from \"#fune/dates.add-days@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.add-days"
        },
        {
          "id": "dates.add-months",
          "tier": "core",
          "why": "Adds months clamping to month end, so 31 January plus a month is the end of February.",
          "section": "date-arithmetic",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Add calendar months to an ISO date, clamping to the month end: 31 Jan + 1 month is 28 or 29 Feb.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "addMonths"
          ],
          "signatures": [
            "export function addMonths(iso: string, months: number): string"
          ],
          "reference": "import { addMonths } from \"#fune/dates.add-months@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.add-months"
        },
        {
          "id": "dates.days-between",
          "tier": "core",
          "why": "Signed calendar days between two dates, for ages of invoices and stays.",
          "section": "date-arithmetic",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Calendar days from one ISO date to another, signed: negative when the second date is earlier.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "daysBetween"
          ],
          "signatures": [
            "export function daysBetween(startIso: string, endIso: string): number"
          ],
          "reference": "import { daysBetween } from \"#fune/dates.days-between@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.days-between"
        },
        {
          "id": "dates.month-boundaries",
          "tier": "core",
          "why": "First and last day of a date's month, for monthly periods and statements.",
          "section": "date-arithmetic",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "The first day, last day and length of the calendar month containing a date.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "monthBoundaries"
          ],
          "signatures": [
            "export function monthBoundaries(iso: string): MonthBoundaries"
          ],
          "reference": "import { monthBoundaries } from \"#fune/dates.month-boundaries@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.month-boundaries"
        },
        {
          "id": "dates.day-of-week",
          "tier": "core",
          "why": "ISO weekday of a date, for weekend rules and opening hours.",
          "section": "date-arithmetic",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "The ISO 8601 day of the week for a date: 1 is Monday through 7 is Sunday.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "dayOfWeek"
          ],
          "signatures": [
            "export function dayOfWeek(iso: string): number"
          ],
          "reference": "import { dayOfWeek } from \"#fune/dates.day-of-week@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.day-of-week"
        },
        {
          "id": "dates.is-leap-year",
          "tier": "optional",
          "why": "Whether a year is a leap year, for 365/366-day calculations.",
          "section": "date-arithmetic",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Whether a year is a Gregorian leap year: every 4th, except centuries, except every 400th.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "isLeapYear"
          ],
          "signatures": [
            "export function isLeapYear(year: number): boolean"
          ],
          "reference": "import { isLeapYear } from \"#fune/dates.is-leap-year@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.is-leap-year"
        },
        {
          "id": "dates.overlap",
          "tier": "optional",
          "why": "Days two date ranges share, for prorating and clash checks.",
          "section": "date-arithmetic",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Days two date ranges have in common, with the end of each range stated as inclusive or exclusive.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "overlapDays"
          ],
          "signatures": [
            "export function overlapDays(aStart: string, aEnd: string, bStart: string, bEnd: string, endInclusive: boolean): number"
          ],
          "reference": "import { overlapDays } from \"#fune/dates.overlap@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.overlap"
        },
        {
          "id": "dates.age",
          "tier": "optional",
          "why": "Age in whole years on a date, handling 29 February birthdays.",
          "section": "date-arithmetic",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Age in whole years on a given date, with 29 February birthdays ageing on 1 March in other years.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "age"
          ],
          "signatures": [
            "export function age(birthDate: string, onDate: string): number"
          ],
          "reference": "import { age } from \"#fune/dates.age@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.age"
        }
      ],
      "gaps": []
    },
    {
      "key": "reporting-periods",
      "title": "Periods and reporting dates",
      "purpose": "Put dates into the periods reports are grouped by.",
      "from": "dates-basics",
      "members": [
        {
          "id": "dates.quarter",
          "tier": "core",
          "why": "Calendar and fiscal quarter of a date for any year-start month.",
          "section": "reporting-periods",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Calendar quarter and fiscal quarter of a date, with the fiscal year and quarter date ranges, for any start month.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "quarter"
          ],
          "signatures": [
            "export function quarter(iso: string, fiscalYearStartMonth: number): Quarter"
          ],
          "reference": "import { quarter } from \"#fune/dates.quarter@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.quarter"
        },
        {
          "id": "dates.week-number",
          "tier": "optional",
          "why": "ISO week number and week-year, for weekly reports.",
          "section": "reporting-periods",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "ISO 8601 week number and week-numbering year of a date: weeks start Monday, week 1 holds the first Thursday.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "weekNumber"
          ],
          "signatures": [
            "export function weekNumber(iso: string): IsoWeek"
          ],
          "reference": "import { weekNumber } from \"#fune/dates.week-number@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.week-number"
        },
        {
          "id": "dates.day-count-fraction",
          "tier": "optional",
          "why": "Year fraction by ACT/365F, ACT/360, 30/360 or ACT/ACT, for interest periods.",
          "section": "reporting-periods",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Year fraction between two dates by ACT/365F, ACT/360, 30/360, 30E/360 or ACT/ACT ISDA, as an exact fraction.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "dayCountFraction"
          ],
          "signatures": [
            "export function dayCountFraction(startIso: string, endIso: string, convention: DayCountConvention): YearFraction"
          ],
          "reference": "import { dayCountFraction } from \"#fune/dates.day-count-fraction@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.day-count-fraction"
        }
      ],
      "gaps": []
    },
    {
      "key": "working-days",
      "title": "Working days and holidays",
      "purpose": "Skip weekends and public holidays when counting or adding days.",
      "from": "dates-basics",
      "members": [
        {
          "id": "dates.bank-holidays",
          "tier": "core",
          "why": "UK bank holidays for a region and year, as gov.uk publishes them.",
          "section": "working-days",
          "from": "dates-basics",
          "version": "1.0.1",
          "summary": "UK bank and public holidays for a region and year, as published by gov.uk, including one-off holidays.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "bankHolidays"
          ],
          "signatures": [
            "export function bankHolidays(region: UkRegion, year: number): readonly BankHoliday[]"
          ],
          "reference": "import { bankHolidays } from \"#fune/dates.bank-holidays@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.bank-holidays"
        },
        {
          "id": "dates.add-business-days",
          "tier": "core",
          "why": "Moves a date by working days, skipping weekends and a holiday list.",
          "section": "working-days",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Move a date forward or back by working days, skipping weekends and a caller-supplied holiday list.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "addBusinessDays"
          ],
          "signatures": [
            "export function addBusinessDays(iso: string, days: number, holidays: readonly string[]): string"
          ],
          "reference": "import { addBusinessDays } from \"#fune/dates.add-business-days@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.add-business-days"
        },
        {
          "id": "dates.business-days-between",
          "tier": "core",
          "why": "Working days between two dates, for SLAs and notice periods.",
          "section": "working-days",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Working days between two dates, excluding weekends and a caller-supplied holiday list.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "businessDaysBetween"
          ],
          "signatures": [
            "export function businessDaysBetween(startIso: string, endIso: string, holidays: readonly string[]): number"
          ],
          "reference": "import { businessDaysBetween } from \"#fune/dates.business-days-between@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.business-days-between"
        }
      ],
      "gaps": []
    },
    {
      "key": "repeating-dates",
      "title": "Repeating schedules",
      "purpose": "Generate the dates of something that repeats.",
      "from": "dates-basics",
      "members": [
        {
          "id": "dates.recurrence",
          "tier": "optional",
          "why": "The next n dates of a rule: monthly on the 31st, last Friday, every two weeks.",
          "section": "repeating-dates",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "The next n dates of a repeating rule: monthly on a day, last weekday of the month, every k days or weeks, yearly.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "recurrence"
          ],
          "signatures": [
            "export function recurrence(rule: RecurrenceRule, startIso: string, count: number): readonly string[]"
          ],
          "reference": "import { recurrence } from \"#fune/dates.recurrence@^1\";",
          "url": "http://www.functionalweave.com/functions/dates.recurrence"
        }
      ],
      "gaps": []
    },
    {
      "key": "times",
      "title": "Times and durations",
      "purpose": "Work with times of day, durations and timestamps.",
      "from": "dates-basics",
      "members": [
        {
          "id": "time.duration",
          "tier": "optional",
          "why": "Parses and adds durations like 1h30m in whole minutes, and formats the total.",
          "section": "times",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Parse durations written as 1h30m, 90m or 01:30, add them up in whole minutes, and format the total.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "duration"
          ],
          "signatures": [
            "export function duration(parts: readonly string[]): Duration"
          ],
          "reference": "import { duration } from \"#fune/time.duration@^1\";",
          "url": "http://www.functionalweave.com/functions/time.duration"
        },
        {
          "id": "time.minutes-between",
          "tier": "optional",
          "why": "Minutes between two local date-times, across midnight.",
          "section": "times",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Minutes from one local date and time to another, correct across midnight; wall-clock time, no time zones.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "minutesBetween"
          ],
          "signatures": [
            "export function minutesBetween(startDate: string, startTime: string, endDate: string, endTime: string): number"
          ],
          "reference": "import { minutesBetween } from \"#fune/time.minutes-between@^1\";",
          "url": "http://www.functionalweave.com/functions/time.minutes-between"
        },
        {
          "id": "time.round-to-increment",
          "tier": "optional",
          "why": "Rounds minutes to a billing increment such as 6 or 15.",
          "section": "times",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Round a duration in minutes to a billing increment such as 6 or 15 minutes, up, down or to nearest.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "roundToIncrement"
          ],
          "signatures": [
            "export function roundToIncrement(minutes: number, increment: number, mode: RoundingMode): number"
          ],
          "reference": "import { roundToIncrement } from \"#fune/time.round-to-increment@^1\";",
          "url": "http://www.functionalweave.com/functions/time.round-to-increment"
        },
        {
          "id": "time.iso-to-unix",
          "tier": "optional",
          "why": "RFC 3339 timestamps to Unix seconds.",
          "section": "times",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "An RFC 3339 timestamp with a Z or offset, such as 2026-09-26T13:00:00+01:00, to Unix time in whole seconds.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "isoToUnix"
          ],
          "signatures": [
            "export function isoToUnix(timestamp: string): number"
          ],
          "reference": "import { isoToUnix } from \"#fune/time.iso-to-unix@^1\";",
          "url": "http://www.functionalweave.com/functions/time.iso-to-unix"
        },
        {
          "id": "time.unix-to-iso",
          "tier": "optional",
          "why": "Unix seconds to an ISO 8601 UTC timestamp.",
          "section": "times",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Unix time in seconds to an ISO 8601 UTC timestamp such as 2026-09-26T12:00:00Z, for years 0001 to 9999.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "unixToIso"
          ],
          "signatures": [
            "export function unixToIso(seconds: number): string"
          ],
          "reference": "import { unixToIso } from \"#fune/time.unix-to-iso@^1\";",
          "url": "http://www.functionalweave.com/functions/time.unix-to-iso"
        },
        {
          "id": "time.countdown",
          "tier": "optional",
          "why": "Seconds left until a moment and a 4:05 style timer text.",
          "section": "times",
          "from": "dates-basics",
          "version": "1.0.0",
          "summary": "Seconds left until a Unix time, whether it has passed, and a timer text like 4:05, for tokens or retry waits.",
          "status": "stable",
          "license": "NOASSERTION",
          "languages": [
            "typescript",
            "python",
            "rust"
          ],
          "available": true,
          "group": false,
          "functions": [
            "countdown"
          ],
          "signatures": [
            "export function countdown(until: number, now: number): Countdown"
          ],
          "reference": "import { countdown } from \"#fune/time.countdown@^1\";",
          "url": "http://www.functionalweave.com/functions/time.countdown"
        }
      ],
      "gaps": []
    }
  ],
  "gaps": [
    {
      "key": "carrier-apis",
      "text": "Live rates, booking and labels from carriers' APIs (DHL, UPS, Royal Mail, DPD) are network work and not in caps.",
      "section": "rating",
      "from": "logistics"
    },
    {
      "key": "tracking",
      "text": "Tracking events and proof of delivery from carriers, and notifying customers.",
      "section": "dates",
      "from": "logistics"
    },
    {
      "key": "label-printing",
      "text": "Rendering the label itself (GS1-128 barcodes, ZPL for thermal printers) is yours.",
      "section": "loads",
      "from": "logistics"
    },
    {
      "key": "route-optimisation",
      "text": "Ordering stops to minimise distance or meet time windows, and road distances rather than straight lines.",
      "section": "routes",
      "from": "logistics"
    },
    {
      "key": "geocoding",
      "text": "Turning addresses into coordinates is network work and not in caps.",
      "section": "routes",
      "from": "logistics"
    },
    {
      "key": "tariff-lookup",
      "text": "The duty rate for a commodity code (UK Trade Tariff, TARIC): you supply it; caps does not hold the tariff.",
      "section": "customs",
      "from": "logistics"
    },
    {
      "key": "customs-declarations",
      "text": "Filing declarations (CDS, ENS) with customs is not in caps.",
      "section": "customs",
      "from": "logistics"
    },
    {
      "key": "fx-rate-source",
      "text": "Where exchange rates come from: money.convert takes a rate you supply; fetching and storing daily rates (ECB, a provider's API) is yours.",
      "section": null,
      "from": "money-basics"
    },
    {
      "key": "money-storage",
      "text": "Storing amounts: the database columns (integer minor units plus a currency code) and their migrations are yours.",
      "section": null,
      "from": "money-basics"
    },
    {
      "key": "time-zones",
      "text": "Time zones and daylight saving: caps works in ISO dates, UTC and wall-clock times; converting with the IANA tz rules is yours.",
      "section": null,
      "from": "dates-basics"
    },
    {
      "key": "locale-formatting",
      "text": "Showing dates in a user's language and format (\"3 octobre 2026\"): caps returns ISO dates, not localised text.",
      "section": null,
      "from": "dates-basics"
    },
    {
      "key": "non-uk-holidays",
      "text": "Public holidays outside the UK: dates.bank-holidays is UK only; pass another country's list to the working-day functions yourself.",
      "section": null,
      "from": "dates-basics"
    }
  ],
  "counts": {
    "members": 52,
    "core": 22,
    "optional": 30,
    "unreviewed": 1,
    "deprecated": [],
    "unavailable": [],
    "missing": [],
    "gaps": 12
  },
  "warnings": [
    "1 optional capability is unreviewed too: logistics.duty-estimate",
    "Customs duty and import VAT figures are estimates from the rates you supply; the declaration and the tariff classification are the importer's responsibility."
  ],
  "url": "http://www.functionalweave.com/suites/logistics",
  "owner": null
}