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// |reftest| skip-if(!this.hasOwnProperty("Intl")||release_or_beta)
function groupByThree(s) {
return String(s).split("").reduceRight((acc, x) => x + (acc.match(/^\d{3}/) ? "," : "") + acc, "");
}
const tests = [
{value: "", expected: "0"},
{value: "0", expected: "0"},
{value: "+0", expected: "0"},
{value: "-0", expected: "-0"},
{value: "Infinity", expected: "∞"},
{value: "+Infinity", expected: "∞"},
{value: "-Infinity", expected: "-∞"},
{value: "NaN", expected: "NaN"},
{value: "invalid", expected: "NaN"},
// Integer 1 with and without fractional/exponent part.
{value: "1", expected: "1"},
{value: "1.", expected: "1"},
{value: "1.0", expected: "1"},
{value: "1.00", expected: "1"},
{value: "1e0", expected: "1"},
{value: "1e+0", expected: "1"},
{value: "1e-0", expected: "1"},
// Leading zeros.
{value: "01", expected: "1"},
{value: "01.", expected: "1"},
{value: "01.0", expected: "1"},
{value: "01.00", expected: "1"},
{value: "01e0", expected: "1"},
{value: "01e+0", expected: "1"},
{value: "01e-0", expected: "1"},
// Large values.
{value: "1e300", expected: "1" + ",000".repeat(100)},
{value: "1e3000", expected: "1" + ",000".repeat(1000)},
{value: "9007199254740991", expected: "9,007,199,254,740,991"},
{value: "9007199254740992", expected: "9,007,199,254,740,992"},
{value: "9007199254740993", expected: "9,007,199,254,740,993"},
{value: "-1e300", expected: "-1" + ",000".repeat(100)},
{value: "-1e3000", expected: "-1" + ",000".repeat(1000)},
{value: "-9007199254740991", expected: "-9,007,199,254,740,991"},
{value: "-9007199254740992", expected: "-9,007,199,254,740,992"},
{value: "-9007199254740993", expected: "-9,007,199,254,740,993"},
// Small values.
{value: "0.10000000000000000001", expected: "0.10000000000000000001"},
{value: "0.00000000000000000001", expected: "0.00000000000000000001"},
{value: "1e-20", expected: "0.00000000000000000001"},
{value: "1e-30", expected: "0"},
{value: "-0.10000000000000000001", expected: "-0.10000000000000000001"},
{value: "-0.00000000000000000001", expected: "-0.00000000000000000001"},
{value: "-1e-20", expected: "-0.00000000000000000001"},
{value: "-1e-30", expected: "-0"},
// Non-standard exponent notation.
{value: ".001e-2", expected: "0.00001"},
{value: "123.001e-2", expected: "1.23001"},
{value: "1000e-2", expected: "10"},
{value: "1000e+2", expected: "100,000"},
{value: "1000e-0", expected: "1,000"},
// Non-decimal strings.
{value: "0b101", expected: "5"},
{value: "0o377", expected: "255"},
{value: "0xdeadBEEF", expected: "3,735,928,559"},
{value: "0B0011", expected: "3"},
{value: "0O0777", expected: "511"},
{value: "0X0ABC", expected: "2,748"},
{value: "0b" + "1".repeat(1000), expected: groupByThree((2n ** 1000n) - 1n)},
{value: "0o1" + "7".repeat(333), expected: groupByThree((2n ** 1000n) - 1n)},
{value: "0x" + "f".repeat(250), expected: groupByThree((2n ** 1000n) - 1n)},
// Non-decimal strings don't accept a sign.
{value: "+0xbad", expected: "NaN"},
{value: "-0xbad", expected: "NaN"},
];
// https://tc39.es/ecma262/#prod-StrWhiteSpaceChar
const strWhiteSpaceChar = [
"",
// https://tc39.es/ecma262/#sec-white-space
"\t", "\v", "\f", " ", "\u00A0", "\uFEFF",
"\u1680", "\u2000", "\u2001", "\u2002", "\u2003", "\u2004", "\u2005", "\u2006",
"\u2007", "\u2008", "\u2009", "\u200A", "\u202F", "\u205F", "\u3000",
// https://tc39.es/ecma262/#sec-line-terminators
"\n", "\r", "\u2028", "\u2029",
];
let nf = new Intl.NumberFormat("en", {maximumFractionDigits: 20});
for (let {value, expected} of tests) {
for (let ws of strWhiteSpaceChar) {
assertEq(nf.format(ws + value), expected);
assertEq(nf.format(value + ws), expected);
assertEq(nf.format(ws + value + ws), expected);
}
}
// The specification doesn't impose any limits for the exponent, but we throw
// an error if the exponent is too large.
{
let nf = new Intl.NumberFormat("en", {useGrouping: false});
for (let value of [
// ICU limit is 999'999'999 (exclusive).
".1e-999999999",
".1e+999999999",
// We limit positive exponents to 9'999'999 (inclusive).
"1e+9999999",
"1e+99999999",
// Int32 overflow when computing the exponent.
".1e-2147483649",
".1e-2147483648",
".1e-2147483647",
".1e+2147483647",
".1e+2147483648",
".1e+2147483649",
]) {
assertThrowsInstanceOf(() => nf.format(value), RangeError);
}
// We allow up to ±9'999'999.
assertEq(nf.format(".1e-9999999"), "0");
assertEq(nf.format(".1e+9999999"), "1" + "0".repeat(9_999_999 - 1));
// Negative exponents are even valid up to -999'999'998
assertEq(nf.format(".1e-999999998"), "0");
}
// Combine extreme values with other rounding modes.
{
let nf = new Intl.NumberFormat("en", {
minimumFractionDigits: 20,
roundingMode: "ceil",
roundingIncrement: 5000,
});
assertEq(nf.format(".1e-999999998"), "0.00000000000000005000");
}
if (typeof reportCompare === "function")
reportCompare(true, true);
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