@formatjs/intl-pluralrules/abstract/GetOperands.js

Polyfill for Intl.PluralRules

import { invariant, ToNumber, ZERO } from "@formatjs/ecma402-abstract";
/**
* ECMA-402 Spec: GetOperands abstract operation
* https://tc39.es/ecma402/#sec-getoperands
*
* Implementation: Extended to support compact exponent (c/e operands)
*
* @param s Formatted number string
* @param exponent Compact decimal exponent (c/e operand), defaults to 0
*/
export function GetOperands(s, exponent = 0) {
	invariant(typeof s === "string", `GetOperands should have been called with a string`);
	const n = ToNumber(s);
	invariant(n.isFinite(), "n should be finite");
	let dp = s.indexOf(".");
	let iv;
	let f;
	let v;
	let fv = "";
	if (dp === -1) {
		iv = n;
		f = ZERO;
		v = 0;
	} else {
		iv = s.slice(0, dp);
		fv = s.slice(dp, s.length);
		f = ToNumber(fv);
		v = fv.length;
	}
	const i = ToNumber(iv).abs();
	let w;
	let t;
	if (!f.isZero()) {
		const ft = fv.replace(/0+$/, "");
		w = ft.length;
		t = ToNumber(ft);
	} else {
		w = 0;
		t = ZERO;
	}
	return {
		Number: n,
		IntegerDigits: i.lessThanOrEqualTo(Number.MAX_SAFE_INTEGER) && i.greaterThanOrEqualTo(-Number.MAX_SAFE_INTEGER) ? i.toNumber() : i.toString(),
		NumberOfFractionDigits: v,
		NumberOfFractionDigitsWithoutTrailing: w,
		FractionDigits: f.toNumber(),
		FractionDigitsWithoutTrailing: t.toNumber(),
		CompactExponent: exponent
	};
}