@visx/vendor
Version:
vendored packages for visx
23 lines (20 loc) • 945 B
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = _default;
exports.formatDecimalParts = formatDecimalParts;
function _default(x) {
return Math.abs(x = Math.round(x)) >= 1e21 ? x.toLocaleString("en").replace(/,/g, "") : x.toString(10);
}
// Computes the decimal coefficient and exponent of the specified number x with
// significant digits p, where x is positive and p is in [1, 21] or undefined.
// For example, formatDecimalParts(1.23) returns ["123", 0].
function formatDecimalParts(x, p) {
if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity
var i,
coefficient = x.slice(0, i);
// The string returned by toExponential either has the form \d\.\d+e[-+]\d+
// (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3).
return [coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient, +x.slice(i + 1)];
}