@visx/vendor
Version:
vendored packages for visx
152 lines (135 loc) • 6.74 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = _default;
var _exponent = _interopRequireDefault(require("./exponent.js"));
var _formatGroup = _interopRequireDefault(require("./formatGroup.js"));
var _formatNumerals = _interopRequireDefault(require("./formatNumerals.js"));
var _formatSpecifier = _interopRequireDefault(require("./formatSpecifier.js"));
var _formatTrim = _interopRequireDefault(require("./formatTrim.js"));
var _formatTypes = _interopRequireDefault(require("./formatTypes.js"));
var _formatPrefixAuto = require("./formatPrefixAuto.js");
var _identity = _interopRequireDefault(require("./identity.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var map = Array.prototype.map,
prefixes = ["y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y"];
function _default(locale) {
var group = locale.grouping === undefined || locale.thousands === undefined ? _identity.default : (0, _formatGroup.default)(map.call(locale.grouping, Number), locale.thousands + ""),
currencyPrefix = locale.currency === undefined ? "" : locale.currency[0] + "",
currencySuffix = locale.currency === undefined ? "" : locale.currency[1] + "",
decimal = locale.decimal === undefined ? "." : locale.decimal + "",
numerals = locale.numerals === undefined ? _identity.default : (0, _formatNumerals.default)(map.call(locale.numerals, String)),
percent = locale.percent === undefined ? "%" : locale.percent + "",
minus = locale.minus === undefined ? "−" : locale.minus + "",
nan = locale.nan === undefined ? "NaN" : locale.nan + "";
function newFormat(specifier) {
specifier = (0, _formatSpecifier.default)(specifier);
var fill = specifier.fill,
align = specifier.align,
sign = specifier.sign,
symbol = specifier.symbol,
zero = specifier.zero,
width = specifier.width,
comma = specifier.comma,
precision = specifier.precision,
trim = specifier.trim,
type = specifier.type;
// The "n" type is an alias for ",g".
if (type === "n") comma = true, type = "g";
// The "" type, and any invalid type, is an alias for ".12~g".
else if (!_formatTypes.default[type]) precision === undefined && (precision = 12), trim = true, type = "g";
// If zero fill is specified, padding goes after sign and before digits.
if (zero || fill === "0" && align === "=") zero = true, fill = "0", align = "=";
// Compute the prefix and suffix.
// For SI-prefix, the suffix is lazily computed.
var prefix = symbol === "$" ? currencyPrefix : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "",
suffix = symbol === "$" ? currencySuffix : /[%p]/.test(type) ? percent : "";
// What format function should we use?
// Is this an integer type?
// Can this type generate exponential notation?
var formatType = _formatTypes.default[type],
maybeSuffix = /[defgprs%]/.test(type);
// Set the default precision if not specified,
// or clamp the specified precision to the supported range.
// For significant precision, it must be in [1, 21].
// For fixed precision, it must be in [0, 20].
precision = precision === undefined ? 6 : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision)) : Math.max(0, Math.min(20, precision));
function format(value) {
var valuePrefix = prefix,
valueSuffix = suffix,
i,
n,
c;
if (type === "c") {
valueSuffix = formatType(value) + valueSuffix;
value = "";
} else {
value = +value;
// Determine the sign. -0 is not less than 0, but 1 / -0 is!
var valueNegative = value < 0 || 1 / value < 0;
// Perform the initial formatting.
value = isNaN(value) ? nan : formatType(Math.abs(value), precision);
// Trim insignificant zeros.
if (trim) value = (0, _formatTrim.default)(value);
// If a negative value rounds to zero after formatting, and no explicit positive sign is requested, hide the sign.
if (valueNegative && +value === 0 && sign !== "+") valueNegative = false;
// Compute the prefix and suffix.
valuePrefix = (valueNegative ? sign === "(" ? sign : minus : sign === "-" || sign === "(" ? "" : sign) + valuePrefix;
valueSuffix = (type === "s" ? prefixes[8 + _formatPrefixAuto.prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : "");
// Break the formatted value into the integer “value” part that can be
// grouped, and fractional or exponential “suffix” part that is not.
if (maybeSuffix) {
i = -1, n = value.length;
while (++i < n) {
if (c = value.charCodeAt(i), 48 > c || c > 57) {
valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix;
value = value.slice(0, i);
break;
}
}
}
}
// If the fill character is not "0", grouping is applied before padding.
if (comma && !zero) value = group(value, Infinity);
// Compute the padding.
var length = valuePrefix.length + value.length + valueSuffix.length,
padding = length < width ? new Array(width - length + 1).join(fill) : "";
// If the fill character is "0", grouping is applied after padding.
if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = "";
// Reconstruct the final output based on the desired alignment.
switch (align) {
case "<":
value = valuePrefix + value + valueSuffix + padding;
break;
case "=":
value = valuePrefix + padding + value + valueSuffix;
break;
case "^":
value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length);
break;
default:
value = padding + valuePrefix + value + valueSuffix;
break;
}
return numerals(value);
}
format.toString = function () {
return specifier + "";
};
return format;
}
function formatPrefix(specifier, value) {
var f = newFormat((specifier = (0, _formatSpecifier.default)(specifier), specifier.type = "f", specifier)),
e = Math.max(-8, Math.min(8, Math.floor((0, _exponent.default)(value) / 3))) * 3,
k = Math.pow(10, -e),
prefix = prefixes[8 + e / 3];
return function (value) {
return f(k * value) + prefix;
};
}
return {
format: newFormat,
formatPrefix: formatPrefix
};
}