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{"version":3,"file":"color.legacy.cjs","sources":["../node_modules/core-js/internals/global.js","../node_modules/core-js/internals/fails.js","../node_modules/core-js/internals/descriptors.js","../node_modules/core-js/internals/function-bind-native.js","../node_modules/core-js/internals/function-call.js","../node_modules/core-js/internals/object-property-is-enumerable.js","../node_modules/core-js/internals/create-property-descriptor.js","../node_modules/core-js/internals/function-uncurry-this.js","../node_modules/core-js/internals/classof-raw.js","../node_modules/core-js/internals/indexed-object.js","../node_modules/core-js/internals/is-null-or-undefined.js","../node_modules/core-js/internals/require-object-coercible.js","../node_modules/core-js/internals/to-indexed-object.js","../node_modules/core-js/internals/document-all.js","../node_modules/core-js/internals/is-callable.js","../node_modules/core-js/internals/is-object.js","../node_modules/core-js/internals/get-built-in.js","../node_modules/core-js/internals/object-is-prototype-of.js","../node_modules/core-js/internals/engine-user-agent.js","../node_modules/core-js/internals/engine-v8-version.js","../node_modules/core-js/internals/symbol-constructor-detection.js","../node_modules/core-js/internals/use-symbol-as-uid.js","../node_modules/core-js/internals/is-symbol.js","../node_modules/core-js/internals/try-to-string.js","../node_modules/core-js/internals/a-callable.js","../node_modules/core-js/internals/get-method.js","../node_modules/core-js/internals/ordinary-to-primitive.js","../node_modules/core-js/internals/define-global-property.js","../node_modules/core-js/internals/shared-store.js","../node_modules/core-js/internals/shared.js","../node_modules/core-js/internals/to-object.js","../node_modules/core-js/internals/has-own-property.js","../node_modules/core-js/internals/uid.js","../node_modules/core-js/internals/well-known-symbol.js","../node_modules/core-js/internals/to-primitive.js","../node_modules/core-js/internals/to-property-key.js","../node_modules/core-js/internals/document-create-element.js","../node_modules/core-js/internals/ie8-dom-define.js","../node_modules/core-js/internals/object-get-own-property-descriptor.js","../node_modules/core-js/internals/v8-prototype-define-bug.js","../node_modules/core-js/internals/an-object.js","../node_modules/core-js/internals/object-define-property.js","../node_modules/core-js/internals/create-non-enumerable-property.js","../node_modules/core-js/internals/function-name.js","../node_modules/core-js/internals/inspect-source.js","../node_modules/core-js/internals/weak-map-basic-detection.js","../node_modules/core-js/internals/shared-key.js","../node_modules/core-js/internals/hidden-keys.js","../node_modules/core-js/internals/internal-state.js","../node_modules/core-js/internals/make-built-in.js","../node_modules/core-js/internals/define-built-in.js","../node_modules/core-js/internals/math-trunc.js","../node_modules/core-js/internals/to-integer-or-infinity.js","../node_modules/core-js/internals/to-absolute-index.js","../node_modules/core-js/internals/to-length.js","../node_modules/core-js/internals/length-of-array-like.js","../node_modules/core-js/internals/array-includes.js","../node_modules/core-js/internals/object-keys-internal.js","../node_modules/core-js/internals/enum-bug-keys.js","../node_modules/core-js/internals/object-get-own-property-names.js","../node_modules/core-js/internals/object-get-own-property-symbols.js","../node_modules/core-js/internals/own-keys.js","../node_modules/core-js/internals/copy-constructor-properties.js","../node_modules/core-js/internals/is-forced.js","../node_modules/core-js/internals/export.js","../node_modules/core-js/internals/is-array.js","../node_modules/core-js/internals/array-set-length.js","../node_modules/core-js/internals/does-not-exceed-safe-integer.js","../node_modules/core-js/modules/es.array.push.js","../src/multiply-matrices.js","../src/util.js","../src/hooks.js","../src/defaults.js","../node_modules/core-js/internals/function-apply.js","../node_modules/core-js/internals/a-possible-prototype.js","../node_modules/core-js/internals/object-set-prototype-of.js","../node_modules/core-js/internals/proxy-accessor.js","../node_modules/core-js/internals/inherit-if-required.js","../node_modules/core-js/internals/to-string-tag-support.js","../node_modules/core-js/internals/classof.js","../node_modules/core-js/internals/to-string.js","../node_modules/core-js/internals/normalize-string-argument.js","../node_modules/core-js/internals/install-error-cause.js","../node_modules/core-js/internals/error-stack-clear.js","../node_modules/core-js/internals/error-stack-installable.js","../node_modules/core-js/internals/wrap-error-constructor-with-cause.js","../node_modules/core-js/modules/es.error.cause.js","../src/adapt.js","../src/space.js","../src/spaces/xyz-d65.js","../src/rgbspace.js","../src/parse.js","../src/getColor.js","../src/getAll.js","../src/get.js","../src/setAll.js","../src/set.js","../src/spaces/xyz-d50.js","../src/spaces/lab.js","../src/angles.js","../src/spaces/lch.js","../src/deltaE/deltaE2000.js","../src/inGamut.js","../src/clone.js","../src/toGamut.js","../src/to.js","../node_modules/core-js/internals/delete-property-or-throw.js","../node_modules/core-js/modules/es.array.unshift.js","../src/serialize.js","../src/spaces/rec2020-linear.js","../src/spaces/rec2020.js","../src/spaces/p3-linear.js","../src/spaces/srgb-linear.js","../src/keywords.js","../src/spaces/srgb.js","../src/spaces/p3.js","../src/display.js","../src/distance.js","../src/equals.js","../src/luminance.js","../src/contrast/WCAG21.js","../src/contrast/APCA.js","../src/contrast/Michelson.js","../src/contrast/Weber.js","../src/contrast/Lstar.js","../src/spaces/lab-d65.js","../src/contrast/deltaPhi.js","../src/contrast.js","../src/chromaticity.js","../src/deltaE/deltaE76.js","../src/deltaE/deltaECMC.js","../src/spaces/xyz-abs-d65.js","../src/spaces/jzazbz.js","../src/spaces/jzczhz.js","../src/deltaE/deltaEJz.js","../src/spaces/ictcp.js","../src/deltaE/deltaEITP.js","../src/spaces/oklab.js","../src/deltaE/deltaEOK.js","../src/deltaE.js","../src/variations.js","../src/interpolation.js","../src/spaces/hsl.js","../src/spaces/hsv.js","../src/spaces/hwb.js","../src/spaces/a98rgb-linear.js","../src/spaces/a98rgb.js","../src/spaces/prophoto-linear.js","../src/spaces/prophoto.js","../src/spaces/oklch.js","../src/spaces/rec2100-pq.js","../src/spaces/rec2100-hlg.js","../src/spaces/acescg.js","../src/spaces/acescc.js","../src/color.js","../src/spaces/index.js","../src/index.js"],"sourcesContent":["var check = function (it) {\n return it && it.Math == Math && it;\n};\n\n// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028\nmodule.exports =\n // eslint-disable-next-line es/no-global-this -- safe\n check(typeof globalThis == 'object' && globalThis) ||\n check(typeof window == 'object' && window) ||\n // eslint-disable-next-line no-restricted-globals -- safe\n check(typeof self == 'object' && self) ||\n check(typeof global == 'object' && global) ||\n // eslint-disable-next-line no-new-func -- fallback\n (function () { return this; })() || Function('return this')();\n","module.exports = function (exec) {\n try {\n return !!exec();\n } catch (error) {\n return true;\n }\n};\n","var fails = require('../internals/fails');\n\n// Detect IE8's incomplete defineProperty implementation\nmodule.exports = !fails(function () {\n // eslint-disable-next-line es/no-object-defineproperty -- required for testing\n return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] != 7;\n});\n","var fails = require('../internals/fails');\n\nmodule.exports = !fails(function () {\n // eslint-disable-next-line es/no-function-prototype-bind -- safe\n var test = (function () { /* empty */ }).bind();\n // eslint-disable-next-line no-prototype-builtins -- safe\n return typeof test != 'function' || test.hasOwnProperty('prototype');\n});\n","var NATIVE_BIND = require('../internals/function-bind-native');\n\nvar call = Function.prototype.call;\n\nmodule.exports = NATIVE_BIND ? call.bind(call) : function () {\n return call.apply(call, arguments);\n};\n","'use strict';\nvar $propertyIsEnumerable = {}.propertyIsEnumerable;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n\n// Nashorn ~ JDK8 bug\nvar NASHORN_BUG = getOwnPropertyDescriptor && !$propertyIsEnumerable.call({ 1: 2 }, 1);\n\n// `Object.prototype.propertyIsEnumerable` method implementation\n// https://tc39.es/ecma262/#sec-object.prototype.propertyisenumerable\nexports.f = NASHORN_BUG ? function propertyIsEnumerable(V) {\n var descriptor = getOwnPropertyDescriptor(this, V);\n return !!descriptor && descriptor.enumerable;\n} : $propertyIsEnumerable;\n","module.exports = function (bitmap, value) {\n return {\n enumerable: !(bitmap & 1),\n configurable: !(bitmap & 2),\n writable: !(bitmap & 4),\n value: value\n };\n};\n","var NATIVE_BIND = require('../internals/function-bind-native');\n\nvar FunctionPrototype = Function.prototype;\nvar bind = FunctionPrototype.bind;\nvar call = FunctionPrototype.call;\nvar uncurryThis = NATIVE_BIND && bind.bind(call, call);\n\nmodule.exports = NATIVE_BIND ? function (fn) {\n return fn && uncurryThis(fn);\n} : function (fn) {\n return fn && function () {\n return call.apply(fn, arguments);\n };\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\n\nvar toString = uncurryThis({}.toString);\nvar stringSlice = uncurryThis(''.slice);\n\nmodule.exports = function (it) {\n return stringSlice(toString(it), 8, -1);\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\nvar classof = require('../internals/classof-raw');\n\nvar $Object = Object;\nvar split = uncurryThis(''.split);\n\n// fallback for non-array-like ES3 and non-enumerable old V8 strings\nmodule.exports = fails(function () {\n // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346\n // eslint-disable-next-line no-prototype-builtins -- safe\n return !$Object('z').propertyIsEnumerable(0);\n}) ? function (it) {\n return classof(it) == 'String' ? split(it, '') : $Object(it);\n} : $Object;\n","// we can't use just `it == null` since of `document.all` special case\n// https://tc39.es/ecma262/#sec-IsHTMLDDA-internal-slot-aec\nmodule.exports = function (it) {\n return it === null || it === undefined;\n};\n","var isNullOrUndefined = require('../internals/is-null-or-undefined');\n\nvar $TypeError = TypeError;\n\n// `RequireObjectCoercible` abstract operation\n// https://tc39.es/ecma262/#sec-requireobjectcoercible\nmodule.exports = function (it) {\n if (isNullOrUndefined(it)) throw $TypeError(\"Can't call method on \" + it);\n return it;\n};\n","// toObject with fallback for non-array-like ES3 strings\nvar IndexedObject = require('../internals/indexed-object');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\n\nmodule.exports = function (it) {\n return IndexedObject(requireObjectCoercible(it));\n};\n","var documentAll = typeof document == 'object' && document.all;\n\n// https://tc39.es/ecma262/#sec-IsHTMLDDA-internal-slot\nvar IS_HTMLDDA = typeof documentAll == 'undefined' && documentAll !== undefined;\n\nmodule.exports = {\n all: documentAll,\n IS_HTMLDDA: IS_HTMLDDA\n};\n","var $documentAll = require('../internals/document-all');\n\nvar documentAll = $documentAll.all;\n\n// `IsCallable` abstract operation\n// https://tc39.es/ecma262/#sec-iscallable\nmodule.exports = $documentAll.IS_HTMLDDA ? function (argument) {\n return typeof argument == 'function' || argument === documentAll;\n} : function (argument) {\n return typeof argument == 'function';\n};\n","var isCallable = require('../internals/is-callable');\nvar $documentAll = require('../internals/document-all');\n\nvar documentAll = $documentAll.all;\n\nmodule.exports = $documentAll.IS_HTMLDDA ? function (it) {\n return typeof it == 'object' ? it !== null : isCallable(it) || it === documentAll;\n} : function (it) {\n return typeof it == 'object' ? it !== null : isCallable(it);\n};\n","var global = require('../internals/global');\nvar isCallable = require('../internals/is-callable');\n\nvar aFunction = function (argument) {\n return isCallable(argument) ? argument : undefined;\n};\n\nmodule.exports = function (namespace, method) {\n return arguments.length < 2 ? aFunction(global[namespace]) : global[namespace] && global[namespace][method];\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\n\nmodule.exports = uncurryThis({}.isPrototypeOf);\n","var getBuiltIn = require('../internals/get-built-in');\n\nmodule.exports = getBuiltIn('navigator', 'userAgent') || '';\n","var global = require('../internals/global');\nvar userAgent = require('../internals/engine-user-agent');\n\nvar process = global.process;\nvar Deno = global.Deno;\nvar versions = process && process.versions || Deno && Deno.version;\nvar v8 = versions && versions.v8;\nvar match, version;\n\nif (v8) {\n match = v8.split('.');\n // in old Chrome, versions of V8 isn't V8 = Chrome / 10\n // but their correct versions are not interesting for us\n version = match[0] > 0 && match[0] < 4 ? 1 : +(match[0] + match[1]);\n}\n\n// BrowserFS NodeJS `process` polyfill incorrectly set `.v8` to `0.0`\n// so check `userAgent` even if `.v8` exists, but 0\nif (!version && userAgent) {\n match = userAgent.match(/Edge\\/(\\d+)/);\n if (!match || match[1] >= 74) {\n match = userAgent.match(/Chrome\\/(\\d+)/);\n if (match) version = +match[1];\n }\n}\n\nmodule.exports = version;\n","/* eslint-disable es/no-symbol -- required for testing */\nvar V8_VERSION = require('../internals/engine-v8-version');\nvar fails = require('../internals/fails');\n\n// eslint-disable-next-line es/no-object-getownpropertysymbols -- required for testing\nmodule.exports = !!Object.getOwnPropertySymbols && !fails(function () {\n var symbol = Symbol();\n // Chrome 38 Symbol has incorrect toString conversion\n // `get-own-property-symbols` polyfill symbols converted to object are not Symbol instances\n return !String(symbol) || !(Object(symbol) instanceof Symbol) ||\n // Chrome 38-40 symbols are not inherited from DOM collections prototypes to instances\n !Symbol.sham && V8_VERSION && V8_VERSION < 41;\n});\n","/* eslint-disable es/no-symbol -- required for testing */\nvar NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');\n\nmodule.exports = NATIVE_SYMBOL\n && !Symbol.sham\n && typeof Symbol.iterator == 'symbol';\n","var getBuiltIn = require('../internals/get-built-in');\nvar isCallable = require('../internals/is-callable');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar USE_SYMBOL_AS_UID = require('../internals/use-symbol-as-uid');\n\nvar $Object = Object;\n\nmodule.exports = USE_SYMBOL_AS_UID ? function (it) {\n return typeof it == 'symbol';\n} : function (it) {\n var $Symbol = getBuiltIn('Symbol');\n return isCallable($Symbol) && isPrototypeOf($Symbol.prototype, $Object(it));\n};\n","var $String = String;\n\nmodule.exports = function (argument) {\n try {\n return $String(argument);\n } catch (error) {\n return 'Object';\n }\n};\n","var isCallable = require('../internals/is-callable');\nvar tryToString = require('../internals/try-to-string');\n\nvar $TypeError = TypeError;\n\n// `Assert: IsCallable(argument) is true`\nmodule.exports = function (argument) {\n if (isCallable(argument)) return argument;\n throw $TypeError(tryToString(argument) + ' is not a function');\n};\n","var aCallable = require('../internals/a-callable');\nvar isNullOrUndefined = require('../internals/is-null-or-undefined');\n\n// `GetMethod` abstract operation\n// https://tc39.es/ecma262/#sec-getmethod\nmodule.exports = function (V, P) {\n var func = V[P];\n return isNullOrUndefined(func) ? undefined : aCallable(func);\n};\n","var call = require('../internals/function-call');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\n\nvar $TypeError = TypeError;\n\n// `OrdinaryToPrimitive` abstract operation\n// https://tc39.es/ecma262/#sec-ordinarytoprimitive\nmodule.exports = function (input, pref) {\n var fn, val;\n if (pref === 'string' && isCallable(fn = input.toString) && !isObject(val = call(fn, input))) return val;\n if (isCallable(fn = input.valueOf) && !isObject(val = call(fn, input))) return val;\n if (pref !== 'string' && isCallable(fn = input.toString) && !isObject(val = call(fn, input))) return val;\n throw $TypeError(\"Can't convert object to primitive value\");\n};\n","var global = require('../internals/global');\n\n// eslint-disable-next-line es/no-object-defineproperty -- safe\nvar defineProperty = Object.defineProperty;\n\nmodule.exports = function (key, value) {\n try {\n defineProperty(global, key, { value: value, configurable: true, writable: true });\n } catch (error) {\n global[key] = value;\n } return value;\n};\n","var global = require('../internals/global');\nvar defineGlobalProperty = require('../internals/define-global-property');\n\nvar SHARED = '__core-js_shared__';\nvar store = global[SHARED] || defineGlobalProperty(SHARED, {});\n\nmodule.exports = store;\n","var IS_PURE = require('../internals/is-pure');\nvar store = require('../internals/shared-store');\n\n(module.exports = function (key, value) {\n return store[key] || (store[key] = value !== undefined ? value : {});\n})('versions', []).push({\n version: '3.25.3',\n mode: IS_PURE ? 'pure' : 'global',\n copyright: '© 2014-2022 Denis Pushkarev (zloirock.ru)',\n license: 'https://github.com/zloirock/core-js/blob/v3.25.3/LICENSE',\n source: 'https://github.com/zloirock/core-js'\n});\n","var requireObjectCoercible = require('../internals/require-object-coercible');\n\nvar $Object = Object;\n\n// `ToObject` abstract operation\n// https://tc39.es/ecma262/#sec-toobject\nmodule.exports = function (argument) {\n return $Object(requireObjectCoercible(argument));\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\nvar toObject = require('../internals/to-object');\n\nvar hasOwnProperty = uncurryThis({}.hasOwnProperty);\n\n// `HasOwnProperty` abstract operation\n// https://tc39.es/ecma262/#sec-hasownproperty\n// eslint-disable-next-line es/no-object-hasown -- safe\nmodule.exports = Object.hasOwn || function hasOwn(it, key) {\n return hasOwnProperty(toObject(it), key);\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\n\nvar id = 0;\nvar postfix = Math.random();\nvar toString = uncurryThis(1.0.toString);\n\nmodule.exports = function (key) {\n return 'Symbol(' + (key === undefined ? '' : key) + ')_' + toString(++id + postfix, 36);\n};\n","var global = require('../internals/global');\nvar shared = require('../internals/shared');\nvar hasOwn = require('../internals/has-own-property');\nvar uid = require('../internals/uid');\nvar NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');\nvar USE_SYMBOL_AS_UID = require('../internals/use-symbol-as-uid');\n\nvar WellKnownSymbolsStore = shared('wks');\nvar Symbol = global.Symbol;\nvar symbolFor = Symbol && Symbol['for'];\nvar createWellKnownSymbol = USE_SYMBOL_AS_UID ? Symbol : Symbol && Symbol.withoutSetter || uid;\n\nmodule.exports = function (name) {\n if (!hasOwn(WellKnownSymbolsStore, name) || !(NATIVE_SYMBOL || typeof WellKnownSymbolsStore[name] == 'string')) {\n var description = 'Symbol.' + name;\n if (NATIVE_SYMBOL && hasOwn(Symbol, name)) {\n WellKnownSymbolsStore[name] = Symbol[name];\n } else if (USE_SYMBOL_AS_UID && symbolFor) {\n WellKnownSymbolsStore[name] = symbolFor(description);\n } else {\n WellKnownSymbolsStore[name] = createWellKnownSymbol(description);\n }\n } return WellKnownSymbolsStore[name];\n};\n","var call = require('../internals/function-call');\nvar isObject = require('../internals/is-object');\nvar isSymbol = require('../internals/is-symbol');\nvar getMethod = require('../internals/get-method');\nvar ordinaryToPrimitive = require('../internals/ordinary-to-primitive');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar $TypeError = TypeError;\nvar TO_PRIMITIVE = wellKnownSymbol('toPrimitive');\n\n// `ToPrimitive` abstract operation\n// https://tc39.es/ecma262/#sec-toprimitive\nmodule.exports = function (input, pref) {\n if (!isObject(input) || isSymbol(input)) return input;\n var exoticToPrim = getMethod(input, TO_PRIMITIVE);\n var result;\n if (exoticToPrim) {\n if (pref === undefined) pref = 'default';\n result = call(exoticToPrim, input, pref);\n if (!isObject(result) || isSymbol(result)) return result;\n throw $TypeError(\"Can't convert object to primitive value\");\n }\n if (pref === undefined) pref = 'number';\n return ordinaryToPrimitive(input, pref);\n};\n","var toPrimitive = require('../internals/to-primitive');\nvar isSymbol = require('../internals/is-symbol');\n\n// `ToPropertyKey` abstract operation\n// https://tc39.es/ecma262/#sec-topropertykey\nmodule.exports = function (argument) {\n var key = toPrimitive(argument, 'string');\n return isSymbol(key) ? key : key + '';\n};\n","var global = require('../internals/global');\nvar isObject = require('../internals/is-object');\n\nvar document = global.document;\n// typeof document.createElement is 'object' in old IE\nvar EXISTS = isObject(document) && isObject(document.createElement);\n\nmodule.exports = function (it) {\n return EXISTS ? document.createElement(it) : {};\n};\n","var DESCRIPTORS = require('../internals/descriptors');\nvar fails = require('../internals/fails');\nvar createElement = require('../internals/document-create-element');\n\n// Thanks to IE8 for its funny defineProperty\nmodule.exports = !DESCRIPTORS && !fails(function () {\n // eslint-disable-next-line es/no-object-defineproperty -- required for testing\n return Object.defineProperty(createElement('div'), 'a', {\n get: function () { return 7; }\n }).a != 7;\n});\n","var DESCRIPTORS = require('../internals/descriptors');\nvar call = require('../internals/function-call');\nvar propertyIsEnumerableModule = require('../internals/object-property-is-enumerable');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar toPropertyKey = require('../internals/to-property-key');\nvar hasOwn = require('../internals/has-own-property');\nvar IE8_DOM_DEFINE = require('../internals/ie8-dom-define');\n\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar $getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n\n// `Object.getOwnPropertyDescriptor` method\n// https://tc39.es/ecma262/#sec-object.getownpropertydescriptor\nexports.f = DESCRIPTORS ? $getOwnPropertyDescriptor : function getOwnPropertyDescriptor(O, P) {\n O = toIndexedObject(O);\n P = toPropertyKey(P);\n if (IE8_DOM_DEFINE) try {\n return $getOwnPropertyDescriptor(O, P);\n } catch (error) { /* empty */ }\n if (hasOwn(O, P)) return createPropertyDescriptor(!call(propertyIsEnumerableModule.f, O, P), O[P]);\n};\n","var DESCRIPTORS = require('../internals/descriptors');\nvar fails = require('../internals/fails');\n\n// V8 ~ Chrome 36-\n// https://bugs.chromium.org/p/v8/issues/detail?id=3334\nmodule.exports = DESCRIPTORS && fails(function () {\n // eslint-disable-next-line es/no-object-defineproperty -- required for testing\n return Object.defineProperty(function () { /* empty */ }, 'prototype', {\n value: 42,\n writable: false\n }).prototype != 42;\n});\n","var isObject = require('../internals/is-object');\n\nvar $String = String;\nvar $TypeError = TypeError;\n\n// `Assert: Type(argument) is Object`\nmodule.exports = function (argument) {\n if (isObject(argument)) return argument;\n throw $TypeError($String(argument) + ' is not an object');\n};\n","var DESCRIPTORS = require('../internals/descriptors');\nvar IE8_DOM_DEFINE = require('../internals/ie8-dom-define');\nvar V8_PROTOTYPE_DEFINE_BUG = require('../internals/v8-prototype-define-bug');\nvar anObject = require('../internals/an-object');\nvar toPropertyKey = require('../internals/to-property-key');\n\nvar $TypeError = TypeError;\n// eslint-disable-next-line es/no-object-defineproperty -- safe\nvar $defineProperty = Object.defineProperty;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar $getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\nvar ENUMERABLE = 'enumerable';\nvar CONFIGURABLE = 'configurable';\nvar WRITABLE = 'writable';\n\n// `Object.defineProperty` method\n// https://tc39.es/ecma262/#sec-object.defineproperty\nexports.f = DESCRIPTORS ? V8_PROTOTYPE_DEFINE_BUG ? function defineProperty(O, P, Attributes) {\n anObject(O);\n P = toPropertyKey(P);\n anObject(Attributes);\n if (typeof O === 'function' && P === 'prototype' && 'value' in Attributes && WRITABLE in Attributes && !Attributes[WRITABLE]) {\n var current = $getOwnPropertyDescriptor(O, P);\n if (current && current[WRITABLE]) {\n O[P] = Attributes.value;\n Attributes = {\n configurable: CONFIGURABLE in Attributes ? Attributes[CONFIGURABLE] : current[CONFIGURABLE],\n enumerable: ENUMERABLE in Attributes ? Attributes[ENUMERABLE] : current[ENUMERABLE],\n writable: false\n };\n }\n } return $defineProperty(O, P, Attributes);\n} : $defineProperty : function defineProperty(O, P, Attributes) {\n anObject(O);\n P = toPropertyKey(P);\n anObject(Attributes);\n if (IE8_DOM_DEFINE) try {\n return $defineProperty(O, P, Attributes);\n } catch (error) { /* empty */ }\n if ('get' in Attributes || 'set' in Attributes) throw $TypeError('Accessors not supported');\n if ('value' in Attributes) O[P] = Attributes.value;\n return O;\n};\n","var DESCRIPTORS = require('../internals/descriptors');\nvar definePropertyModule = require('../internals/object-define-property');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\n\nmodule.exports = DESCRIPTORS ? function (object, key, value) {\n return definePropertyModule.f(object, key, createPropertyDescriptor(1, value));\n} : function (object, key, value) {\n object[key] = value;\n return object;\n};\n","var DESCRIPTORS = require('../internals/descriptors');\nvar hasOwn = require('../internals/has-own-property');\n\nvar FunctionPrototype = Function.prototype;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar getDescriptor = DESCRIPTORS && Object.getOwnPropertyDescriptor;\n\nvar EXISTS = hasOwn(FunctionPrototype, 'name');\n// additional protection from minified / mangled / dropped function names\nvar PROPER = EXISTS && (function something() { /* empty */ }).name === 'something';\nvar CONFIGURABLE = EXISTS && (!DESCRIPTORS || (DESCRIPTORS && getDescriptor(FunctionPrototype, 'name').configurable));\n\nmodule.exports = {\n EXISTS: EXISTS,\n PROPER: PROPER,\n CONFIGURABLE: CONFIGURABLE\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\nvar isCallable = require('../internals/is-callable');\nvar store = require('../internals/shared-store');\n\nvar functionToString = uncurryThis(Function.toString);\n\n// this helper broken in `core-js@3.4.1-3.4.4`, so we can't use `shared` helper\nif (!isCallable(store.inspectSource)) {\n store.inspectSource = function (it) {\n return functionToString(it);\n };\n}\n\nmodule.exports = store.inspectSource;\n","var global = require('../internals/global');\nvar isCallable = require('../internals/is-callable');\n\nvar WeakMap = global.WeakMap;\n\nmodule.exports = isCallable(WeakMap) && /native code/.test(String(WeakMap));\n","var shared = require('../internals/shared');\nvar uid = require('../internals/uid');\n\nvar keys = shared('keys');\n\nmodule.exports = function (key) {\n return keys[key] || (keys[key] = uid(key));\n};\n","module.exports = {};\n","var NATIVE_WEAK_MAP = require('../internals/weak-map-basic-detection');\nvar global = require('../internals/global');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar isObject = require('../internals/is-object');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar hasOwn = require('../internals/has-own-property');\nvar shared = require('../internals/shared-store');\nvar sharedKey = require('../internals/shared-key');\nvar hiddenKeys = require('../internals/hidden-keys');\n\nvar OBJECT_ALREADY_INITIALIZED = 'Object already initialized';\nvar TypeError = global.TypeError;\nvar WeakMap = global.WeakMap;\nvar set, get, has;\n\nvar enforce = function (it) {\n return has(it) ? get(it) : set(it, {});\n};\n\nvar getterFor = function (TYPE) {\n return function (it) {\n var state;\n if (!isObject(it) || (state = get(it)).type !== TYPE) {\n throw TypeError('Incompatible receiver, ' + TYPE + ' required');\n } return state;\n };\n};\n\nif (NATIVE_WEAK_MAP || shared.state) {\n var store = shared.state || (shared.state = new WeakMap());\n var wmget = uncurryThis(store.get);\n var wmhas = uncurryThis(store.has);\n var wmset = uncurryThis(store.set);\n set = function (it, metadata) {\n if (wmhas(store, it)) throw TypeError(OBJECT_ALREADY_INITIALIZED);\n metadata.facade = it;\n wmset(store, it, metadata);\n return metadata;\n };\n get = function (it) {\n return wmget(store, it) || {};\n };\n has = function (it) {\n return wmhas(store, it);\n };\n} else {\n var STATE = sharedKey('state');\n hiddenKeys[STATE] = true;\n set = function (it, metadata) {\n if (hasOwn(it, STATE)) throw TypeError(OBJECT_ALREADY_INITIALIZED);\n metadata.facade = it;\n createNonEnumerableProperty(it, STATE, metadata);\n return metadata;\n };\n get = function (it) {\n return hasOwn(it, STATE) ? it[STATE] : {};\n };\n has = function (it) {\n return hasOwn(it, STATE);\n };\n}\n\nmodule.exports = {\n set: set,\n get: get,\n has: has,\n enforce: enforce,\n getterFor: getterFor\n};\n","var fails = require('../internals/fails');\nvar isCallable = require('../internals/is-callable');\nvar hasOwn = require('../internals/has-own-property');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar CONFIGURABLE_FUNCTION_NAME = require('../internals/function-name').CONFIGURABLE;\nvar inspectSource = require('../internals/inspect-source');\nvar InternalStateModule = require('../internals/internal-state');\n\nvar enforceInternalState = InternalStateModule.enforce;\nvar getInternalState = InternalStateModule.get;\n// eslint-disable-next-line es/no-object-defineproperty -- safe\nvar defineProperty = Object.defineProperty;\n\nvar CONFIGURABLE_LENGTH = DESCRIPTORS && !fails(function () {\n return defineProperty(function () { /* empty */ }, 'length', { value: 8 }).length !== 8;\n});\n\nvar TEMPLATE = String(String).split('String');\n\nvar makeBuiltIn = module.exports = function (value, name, options) {\n if (String(name).slice(0, 7) === 'Symbol(') {\n name = '[' + String(name).replace(/^Symbol\$([^)]*)\$/, '$1') + ']';\n }\n if (options && options.getter) name = 'get ' + name;\n if (options && options.setter) name = 'set ' + name;\n if (!hasOwn(value, 'name') || (CONFIGURABLE_FUNCTION_NAME && value.name !== name)) {\n if (DESCRIPTORS) defineProperty(value, 'name', { value: name, configurable: true });\n else value.name = name;\n }\n if (CONFIGURABLE_LENGTH && options && hasOwn(options, 'arity') && value.length !== options.arity) {\n defineProperty(value, 'length', { value: options.arity });\n }\n try {\n if (options && hasOwn(options, 'constructor') && options.constructor) {\n if (DESCRIPTORS) defineProperty(value, 'prototype', { writable: false });\n // in V8 ~ Chrome 53, prototypes of some methods, like `Array.prototype.values`, are non-writable\n } else if (value.prototype) value.prototype = undefined;\n } catch (error) { /* empty */ }\n var state = enforceInternalState(value);\n if (!hasOwn(state, 'source')) {\n state.source = TEMPLATE.join(typeof name == 'string' ? name : '');\n } return value;\n};\n\n// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative\n// eslint-disable-next-line no-extend-native -- required\nFunction.prototype.toString = makeBuiltIn(function toString() {\n return isCallable(this) && getInternalState(this).source || inspectSource(this);\n}, 'toString');\n","var isCallable = require('../internals/is-callable');\nvar definePropertyModule = require('../internals/object-define-property');\nvar makeBuiltIn = require('../internals/make-built-in');\nvar defineGlobalProperty = require('../internals/define-global-property');\n\nmodule.exports = function (O, key, value, options) {\n if (!options) options = {};\n var simple = options.enumerable;\n var name = options.name !== undefined ? options.name : key;\n if (isCallable(value)) makeBuiltIn(value, name, options);\n if (options.global) {\n if (simple) O[key] = value;\n else defineGlobalProperty(key, value);\n } else {\n try {\n if (!options.unsafe) delete O[key];\n else if (O[key]) simple = true;\n } catch (error) { /* empty */ }\n if (simple) O[key] = value;\n else definePropertyModule.f(O, key, {\n value: value,\n enumerable: false,\n configurable: !options.nonConfigurable,\n writable: !options.nonWritable\n });\n } return O;\n};\n","var ceil = Math.ceil;\nvar floor = Math.floor;\n\n// `Math.trunc` method\n// https://tc39.es/ecma262/#sec-math.trunc\n// eslint-disable-next-line es/no-math-trunc -- safe\nmodule.exports = Math.trunc || function trunc(x) {\n var n = +x;\n return (n > 0 ? floor : ceil)(n);\n};\n","var trunc = require('../internals/math-trunc');\n\n// `ToIntegerOrInfinity` abstract operation\n// https://tc39.es/ecma262/#sec-tointegerorinfinity\nmodule.exports = function (argument) {\n var number = +argument;\n // eslint-disable-next-line no-self-compare -- NaN check\n return number !== number || number === 0 ? 0 : trunc(number);\n};\n","var toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\n\nvar max = Math.max;\nvar min = Math.min;\n\n// Helper for a popular repeating case of the spec:\n// Let integer be ? ToInteger(index).\n// If integer < 0, let result be max((length + integer), 0); else let result be min(integer, length).\nmodule.exports = function (index, length) {\n var integer = toIntegerOrInfinity(index);\n return integer < 0 ? max(integer + length, 0) : min(integer, length);\n};\n","var toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\n\nvar min = Math.min;\n\n// `ToLength` abstract operation\n// https://tc39.es/ecma262/#sec-tolength\nmodule.exports = function (argument) {\n return argument > 0 ? min(toIntegerOrInfinity(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991\n};\n","var toLength = require('../internals/to-length');\n\n// `LengthOfArrayLike` abstract operation\n// https://tc39.es/ecma262/#sec-lengthofarraylike\nmodule.exports = function (obj) {\n return toLength(obj.length);\n};\n","var toIndexedObject = require('../internals/to-indexed-object');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\n\n// `Array.prototype.{ indexOf, includes }` methods implementation\nvar createMethod = function (IS_INCLUDES) {\n return function ($this, el, fromIndex) {\n var O = toIndexedObject($this);\n var length = lengthOfArrayLike(O);\n var index = toAbsoluteIndex(fromIndex, length);\n var value;\n // Array#includes uses SameValueZero equality algorithm\n // eslint-disable-next-line no-self-compare -- NaN check\n if (IS_INCLUDES && el != el) while (length > index) {\n value = O[index++];\n // eslint-disable-next-line no-self-compare -- NaN check\n if (value != value) return true;\n // Array#indexOf ignores holes, Array#includes - not\n } else for (;length > index; index++) {\n if ((IS_INCLUDES || index in O) && O[index] === el) return IS_INCLUDES || index || 0;\n } return !IS_INCLUDES && -1;\n };\n};\n\nmodule.exports = {\n // `Array.prototype.includes` method\n // https://tc39.es/ecma262/#sec-array.prototype.includes\n includes: createMethod(true),\n // `Array.prototype.indexOf` method\n // https://tc39.es/ecma262/#sec-array.prototype.indexof\n indexOf: createMethod(false)\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\nvar hasOwn = require('../internals/has-own-property');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar indexOf = require('../internals/array-includes').indexOf;\nvar hiddenKeys = require('../internals/hidden-keys');\n\nvar push = uncurryThis([].push);\n\nmodule.exports = function (object, names) {\n var O = toIndexedObject(object);\n var i = 0;\n var result = [];\n var key;\n for (key in O) !hasOwn(hiddenKeys, key) && hasOwn(O, key) && push(result, key);\n // Don't enum bug & hidden keys\n while (names.length > i) if (hasOwn(O, key = names[i++])) {\n ~indexOf(result, key) || push(result, key);\n }\n return result;\n};\n","// IE8- don't enum bug keys\nmodule.exports = [\n 'constructor',\n 'hasOwnProperty',\n 'isPrototypeOf',\n 'propertyIsEnumerable',\n 'toLocaleString',\n 'toString',\n 'valueOf'\n];\n","var internalObjectKeys = require('../internals/object-keys-internal');\nvar enumBugKeys = require('../internals/enum-bug-keys');\n\nvar hiddenKeys = enumBugKeys.concat('length', 'prototype');\n\n// `Object.getOwnPropertyNames` method\n// https://tc39.es/ecma262/#sec-object.getownpropertynames\n// eslint-disable-next-line es/no-object-getownpropertynames -- safe\nexports.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {\n return internalObjectKeys(O, hiddenKeys);\n};\n","// eslint-disable-next-line es/no-object-getownpropertysymbols -- safe\nexports.f = Object.getOwnPropertySymbols;\n","var getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar getOwnPropertyNamesModule = require('../internals/object-get-own-property-names');\nvar getOwnPropertySymbolsModule = require('../internals/object-get-own-property-symbols');\nvar anObject = require('../internals/an-object');\n\nvar concat = uncurryThis([].concat);\n\n// all object keys, includes non-enumerable and symbols\nmodule.exports = getBuiltIn('Reflect', 'ownKeys') || function ownKeys(it) {\n var keys = getOwnPropertyNamesModule.f(anObject(it));\n var getOwnPropertySymbols = getOwnPropertySymbolsModule.f;\n return getOwnPropertySymbols ? concat(keys, getOwnPropertySymbols(it)) : keys;\n};\n","var hasOwn = require('../internals/has-own-property');\nvar ownKeys = require('../internals/own-keys');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\nvar definePropertyModule = require('../internals/object-define-property');\n\nmodule.exports = function (target, source, exceptions) {\n var keys = ownKeys(source);\n var defineProperty = definePropertyModule.f;\n var getOwnPropertyDescriptor = getOwnPropertyDescriptorModule.f;\n for (var i = 0; i < keys.length; i++) {\n var key = keys[i];\n if (!hasOwn(target, key) && !(exceptions && hasOwn(exceptions, key))) {\n defineProperty(target, key, getOwnPropertyDescriptor(source, key));\n }\n }\n};\n","var fails = require('../internals/fails');\nvar isCallable = require('../internals/is-callable');\n\nvar replacement = /#|\\.prototype\\./;\n\nvar isForced = function (feature, detection) {\n var value = data[normalize(feature)];\n return value == POLYFILL ? true\n : value == NATIVE ? false\n : isCallable(detection) ? fails(detection)\n : !!detection;\n};\n\nvar normalize = isForced.normalize = function (string) {\n return String(string).replace(replacement, '.').toLowerCase();\n};\n\nvar data = isForced.data = {};\nvar NATIVE = isForced.NATIVE = 'N';\nvar POLYFILL = isForced.POLYFILL = 'P';\n\nmodule.exports = isForced;\n","var global = require('../internals/global');\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar defineBuiltIn = require('../internals/define-built-in');\nvar defineGlobalProperty = require('../internals/define-global-property');\nvar copyConstructorProperties = require('../internals/copy-constructor-properties');\nvar isForced = require('../internals/is-forced');\n\n/*\n options.target - name of the target object\n options.global - target is the global object\n options.stat - export as static methods of target\n options.proto - export as prototype methods of target\n options.real - real prototype method for the `pure` version\n options.forced - export even if the native feature is available\n options.bind - bind methods to the target, required for the `pure` version\n options.wrap - wrap constructors to preventing global pollution, required for the `pure` version\n options.unsafe - use the simple assignment of property instead of delete + defineProperty\n options.sham - add a flag to not completely full polyfills\n options.enumerable - export as enumerable property\n options.dontCallGetSet - prevent calling a getter on target\n options.name - the .name of the function if it does not match the key\n*/\nmodule.exports = function (options, source) {\n var TARGET = options.target;\n var GLOBAL = options.global;\n var STATIC = options.stat;\n var FORCED, target, key, targetProperty, sourceProperty, descriptor;\n if (GLOBAL) {\n target = global;\n } else if (STATIC) {\n target = global[TARGET] || defineGlobalProperty(TARGET, {});\n } else {\n target = (global[TARGET] || {}).prototype;\n }\n if (target) for (key in source) {\n sourceProperty = source[key];\n if (options.dontCallGetSet) {\n descriptor = getOwnPropertyDescriptor(target, key);\n targetProperty = descriptor && descriptor.value;\n } else targetProperty = target[key];\n FORCED = isForced(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);\n // contained in target\n if (!FORCED && targetProperty !== undefined) {\n if (typeof sourceProperty == typeof targetProperty) continue;\n copyConstructorProperties(sourceProperty, targetProperty);\n }\n // add a flag to not completely full polyfills\n if (options.sham || (targetProperty && targetProperty.sham)) {\n createNonEnumerableProperty(sourceProperty, 'sham', true);\n }\n defineBuiltIn(target, key, sourceProperty, options);\n }\n};\n","var classof = require('../internals/classof-raw');\n\n// `IsArray` abstract operation\n// https://tc39.es/ecma262/#sec-isarray\n// eslint-disable-next-line es/no-array-isarray -- safe\nmodule.exports = Array.isArray || function isArray(argument) {\n return classof(argument) == 'Array';\n};\n","'use strict';\nvar DESCRIPTORS = require('../internals/descriptors');\nvar isArray = require('../internals/is-array');\n\nvar $TypeError = TypeError;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n\n// Safari < 13 does not throw an error in this case\nvar SILENT_ON_NON_WRITABLE_LENGTH_SET = DESCRIPTORS && !function () {\n // makes no sense without proper strict mode support\n if (this !== undefined) return true;\n try {\n // eslint-disable-next-line es/no-object-defineproperty -- safe\n Object.defineProperty([], 'length', { writable: false }).length = 1;\n } catch (error) {\n return error instanceof TypeError;\n }\n}();\n\nmodule.exports = SILENT_ON_NON_WRITABLE_LENGTH_SET ? function (O, length) {\n if (isArray(O) && !getOwnPropertyDescriptor(O, 'length').writable) {\n throw $TypeError('Cannot set read only .length');\n } return O.length = length;\n} : function (O, length) {\n return O.length = length;\n};\n","var $TypeError = TypeError;\nvar MAX_SAFE_INTEGER = 0x1FFFFFFFFFFFFF; // 2 ** 53 - 1 == 9007199254740991\n\nmodule.exports = function (it) {\n if (it > MAX_SAFE_INTEGER) throw $TypeError('Maximum allowed index exceeded');\n return it;\n};\n","'use strict';\nvar $ = require('../internals/export');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar setArrayLength = require('../internals/array-set-length');\nvar doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer');\nvar fails = require('../internals/fails');\n\nvar INCORRECT_TO_LENGTH = fails(function () {\n return [].push.call({ length: 0x100000000 }, 1) !== 4294967297;\n});\n\n// V8 and Safari <= 15.4, FF < 23 throws InternalError\n// https://bugs.chromium.org/p/v8/issues/detail?id=12681\nvar SILENT_ON_NON_WRITABLE_LENGTH = !function () {\n try {\n // eslint-disable-next-line es/no-object-defineproperty -- safe\n Object.defineProperty([], 'length', { writable: false }).push();\n } catch (error) {\n return error instanceof TypeError;\n }\n}();\n\n// `Array.prototype.push` method\n// https://tc39.es/ecma262/#sec-array.prototype.push\n$({ target: 'Array', proto: true, arity: 1, forced: INCORRECT_TO_LENGTH || SILENT_ON_NON_WRITABLE_LENGTH }, {\n // eslint-disable-next-line no-unused-vars -- required for `.length`\n push: function push(item) {\n var O = toObject(this);\n var len = lengthOfArrayLike(O);\n var argCount = arguments.length;\n doesNotExceedSafeInteger(len + argCount);\n for (var i = 0; i < argCount; i++) {\n O[len] = arguments[i];\n len++;\n }\n setArrayLength(O, len);\n return len;\n }\n});\n","// A is m x n. B is n x p. product is m x p.\nexport default function multiplyMatrices(A, B) {\n\tlet m = A.length;\n\n\tif (!Array.isArray(A[0])) {\n\t\t// A is vector, convert to [[a, b, c, ...]]\n\t\tA = [A];\n\t}\n\n\tif (!Array.isArray(B[0])) {\n\t\t// B is vector, convert to [[a], [b], [c], ...]]\n\t\tB = B.map(x => [x]);\n\t}\n\n\tlet p = B[0].length;\n\tlet B_cols = B[0].map((_, i) => B.map(x => x[i])); // transpose B\n\tlet product = A.map(row => B_cols.map(col => {\n\t\tlet ret = 0;\n\n\t\tif (!Array.isArray(row)) {\n\t\t\tfor (let c of col) {\n\t\t\t\tret += row * c;\n\t\t\t}\n\n\t\t\treturn ret;\n\t\t}\n\n\t\tfor (let i=0; i < row.length; i++) {\n\t\t\tret += row[i] * (col[i] || 0);\n\t\t}\n\n\t\treturn ret;\n\t}));\n\n\tif (m === 1) {\n\t\tproduct = product[0]; // Avoid [[a, b, c, ...]]\n\t}\n\n\tif (p === 1) {\n\t\treturn product.map(x => x[0]); // Avoid [[a], [b], [c], ...]]\n\t}\n\n\treturn product;\n}\n","/**\n * Various utility functions\n */\n\nexport {default as multiplyMatrices} from \"./multiply-matrices.js\";\n\n/**\n * Check if a value is a string (including a String object)\n * @param {*} str - Value to check\n * @returns {boolean}\n */\nexport function isString (str) {\n\treturn type(str) === \"string\";\n}\n\n/**\n * Determine the internal JavaScript [[Class]] of an object.\n * @param {*} o - Value to check\n * @returns {string}\n */\nexport function type (o) {\n\tlet str = Object.prototype.toString.call(o);\n\n\treturn (str.match(/^\\[object\\s+(.*?)\\]$/)[1] || \"\").toLowerCase();\n}\n\n/**\n * Round a number to a certain number of significant digits\n * @param {number} n - The number to round\n * @param {number} precision - Number of significant digits\n */\nexport function toPrecision(n, precision) {\n\tn = +n;\n\tprecision = +precision;\n\tlet integerLength = (Math.floor(n) + \"\").length;\n\n\tif (precision > integerLength) {\n\t\treturn +n.toFixed(precision - integerLength);\n\t}\n\telse {\n\t\tlet p10 = 10 ** (integerLength - precision);\n\t\treturn Math.round(n / p10) * p10;\n\t}\n}\n\n/**\n* Parse a CSS function, regardless of its name and arguments\n* @param String str String to parse\n* @return {{name, args, rawArgs}}\n*/\nexport function parseFunction (str) {\n\tif (!str) {\n\t\treturn;\n\t}\n\n\tstr = str.trim();\n\n\tconst isFunctionRegex = /^([a-z]+)\$(.+?)\$$/i;\n\tconst isNumberRegex = /^-?[\\d.]+$/;\n\tlet parts = str.match(isFunctionRegex);\n\n\tif (parts) {\n\t\t// It is a function, parse args\n\t\tlet args = [];\n\t\tparts[2].replace(/\\/?\\s*([-\\w.]+(?:%|deg)?)/g, ($0, arg) => {\n\t\t\tif (/%$/.test(arg)) {\n\t\t\t\t// Convert percentages to 0-1 numbers\n\t\t\t\targ = new Number(arg.slice(0, -1) / 100);\n\t\t\t\targ.type = \"<percentage>\";\n\t\t\t}\n\t\t\telse if (/deg$/.test(arg)) {\n\t\t\t\t// Drop deg from degrees and convert to number\n\t\t\t\t// TODO handle other units too\n\t\t\t\targ = new Number(+arg.slice(0, -3));\n\t\t\t\targ.type = \"<angle>\";\n\t\t\t\targ.unit = \"deg\";\n\t\t\t}\n\t\t\telse if (isNumberRegex.test(arg)) {\n\t\t\t\t// Convert numerical args to numbers\n\t\t\t\targ = new Number(arg);\n\t\t\t\targ.type = \"<number>\";\n\t\t\t}\n\n\t\t\tif ($0.startsWith(\"/\")) {\n\t\t\t\t// It's alpha\n\t\t\t\targ = arg instanceof Number? arg : new Number(arg);\n\t\t\t\targ.alpha = true;\n\t\t\t}\n\n\t\t\targs.push(arg);\n\t\t});\n\n\t\treturn {\n\t\t\tname: parts[1].toLowerCase(),\n\t\t\trawName: parts[1],\n\t\t\trawArgs: parts[2],\n\t\t\t// An argument could be (as of css-color-4):\n\t\t\t// a number, percentage, degrees (hue), ident (in color())\n\t\t\targs\n\t\t};\n\t}\n}\n\nexport function last(arr) {\n\treturn arr[arr.length - 1];\n}\n\nexport function interpolate (start, end, p) {\n\tif (isNaN(start)) {\n\t\treturn end;\n\t}\n\n\tif (isNaN(end)) {\n\t\treturn start;\n\t}\n\n\treturn start + (end -