@formant/ava/lib/utils/dataFormat.js

A framework for automated visual analytics.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * data format.
 * dataFormat(0.8849) = 0.88
 * dataFormat(12, 1) = 12
 * dataFormat(1234, 1) = 1.2k
 * dataFormat(123.456, 2) = 123.46
 * @param value value to be formatted
 * @param digits the number of digits to keep after the decimal point, 2 by default
 * @returns formatted value string
 */
function dataFormat(value, digits) {
    if (digits === void 0) { digits = 2; }
    if (typeof value === 'string')
        return value;
    var formatMap = [
        { value: 1, symbol: '' },
        { value: 1e3, symbol: 'k' },
        { value: 1e6, symbol: 'M' },
        { value: 1e9, symbol: 'G' },
        { value: 1e12, symbol: 'T' },
        { value: 1e15, symbol: 'P' },
        { value: 1e18, symbol: 'E' },
    ];
    var rx = /\.0+$|(\.[0-9]*[1-9])0+$/;
    var item = formatMap
        .slice()
        .reverse()
        .find(function (item) {
        return value >= item.value;
    });
    return item ? (value / item.value).toFixed(digits).replace(rx, '$1') + item.symbol : value.toFixed(digits);
}
exports.default = dataFormat;