@fractorysolutions/safe-units/dist/measure/format.js

Type-safe TypeScript units of measure

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.defaultFormatUnit = void 0;
var exponentValueArithmetic_1 = require("../exponent/exponentValueArithmetic");
function defaultFormatUnit(unit) {
    var dimensions = Object.keys(unit)
        .map(function (dimension) { return unit[dimension]; })
        .filter(isDimensionPresent)
        .sort(orderDimensions);
    if (dimensions.length === 0) {
        return "";
    }
    var positive = dimensions.filter(function (_a) {
        var _ = _a[0], dim = _a[1];
        return (0, exponentValueArithmetic_1.getExponentValue)(dim) > 0;
    });
    var negative = dimensions.filter(function (_a) {
        var _ = _a[0], dim = _a[1];
        return (0, exponentValueArithmetic_1.getExponentValue)(dim) < 0;
    });
    if (positive.length === 0) {
        return formatDimensions(negative);
    }
    var numerator = formatDimensions(positive);
    if (negative.length === 0) {
        return numerator;
    }
    var denominator = formatDimensions(negative.map(negateDimension));
    return "".concat(numerator, " / ").concat(maybeParenthesize(denominator, negative.length !== 1));
}
exports.defaultFormatUnit = defaultFormatUnit;
function isDimensionPresent(dimension) {
    return dimension !== undefined && dimension[1] !== "0";
}
function orderDimensions(_a, _b) {
    var leftSymbol = _a[0];
    var rightSymbol = _b[0];
    return leftSymbol < rightSymbol ? -1 : 1;
}
function formatDimensions(dimensions) {
    return dimensions
        .map(function (_a) {
        var symbol = _a[0], exponent = _a[1];
        var exponentStr = exponent !== "1" ? "^".concat(exponent) : "";
        return "".concat(symbol).concat(exponentStr);
    })
        .join(" * ");
}
function negateDimension(_a) {
    var symbol = _a[0], exponent = _a[1];
    return [symbol, (0, exponentValueArithmetic_1.negateExponent)(exponent)];
}
function maybeParenthesize(text, parenthesize) {
    return parenthesize ? "(".concat(text, ")") : text;
}
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