colorjs.io/dist/color.min.js

Let’s get serious about color

function e(e,t){let r,a,n=e.length,o=!1,s=!1;Array.isArray(e[0])?r=e:(r=[e],n=r.length,o=!0),Array.isArray(t[0])?a=t:(a=t.length>0?t.map((e=>[e])):[[]],s=!0);let i=a[0].length,c=a[0].map(((e,t)=>a.map((e=>e[t])))),l=r.map((e=>c.map((t=>{let r=0;if(!Array.isArray(e)){for(let a of t)r+=e*a;return r}for(let a=0;a<e.length;a++)r+=e[a]*(t[a]||0);return r}))));return 1===n&&o&&(l=l[0]),1===i&&s?1===n&&o?l[0]:l.map((e=>e[0])):l}function t(e,t){return e[0]*t[0]+e[1]*t[1]+e[2]*t[2]}function r(e,r,a=[0,0,0]){const n=t(e,r[0]),o=t(e,r[1]),s=t(e,r[2]);return a[0]=n,a[1]=o,a[2]=s,a}function a(e){return"string"===n(e)}function n(e){return(Object.prototype.toString.call(e).match(/^\[object\s+(.*?)\]$/)[1]||"").toLowerCase()}function o(e,{precision:t=16,unit:r}){return s(e)?"none":(e=+c(e,t))+(r??"")}function s(e){return null===e}function i(e){return s(e)?0:e}function c(e,t){if(0===e)return 0;let r=~~e,a=0;r&&t&&(a=1+~~Math.log10(Math.abs(r)));const n=10**(t-a);return Math.floor(e*n+.5)/n}function 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this.range?this.range:"<percentage>"===this.type?this.percentageRange():"<angle>"===this.type?[0,360]:null}get unit(){return"<percentage>"===this.type?"%":"<angle>"===this.type?"deg":""}resolve(e){if("<angle>"===this.type)return e;let t=this.computedRange,r=this.coordRange;return"<percentage>"===this.type&&(r??=this.percentageRange()),h(t,r,e)}serialize(e,t){let r="<percentage>"===this.type?this.percentageRange(100):this.computedRange,a=this.unit;return o(e=h(this.coordRange,r,e),{unit:a,precision:t})}toString(){let e=this.type;if(this.range){let[t="",r=""]=this.range;e+=`[${t},${r}]`}return e}percentageRange(e=1){let t;return t=this.coordMeta&&this.coordMeta.range||this.coordRange&&this.coordRange[0]>=0?[0,1]:[-1,1],[t[0]*e,t[1]*e]}static get(e,t){return b(e,this)?e:new this(e,t)}}const C=Symbol("instance");class R{type;name;spaceCoords;coords;id;alpha;constructor(e,t=e.space){e[C]=this,this.type="function",this.name="color",Object.assign(this,e),this.space=t,"custom"!==this.type&&(this.spaceCoords=Object.values(t.coords),this.coords||(this.coords=this.spaceCoords.map((e=>{let t=["<number>","<percentage>"];return"angle"===e.type&&t.push("<angle>"),t}))),this.coords=this.coords.map(((e,t)=>{let r=this.spaceCoords[t];return"string"==typeof e&&(e=e.trim().split(/\s*\|\s*/)),e.map((e=>v.get(e,r)))})))}serializeCoords(e,t,r){return r=e.map(((e,t)=>v.get(r?.[t]??this.coords[t][0],this.spaceCoords[t]))),e.map(((e,a)=>r[a].serialize(e,t)))}coerceCoords(e,t){return Object.entries(this.space.coords).map((([r,a],n)=>{let o=e[n];if(s(o)||isNaN(o))return o;let i=t[n],c=this.coords[n].find((e=>e.type==i));if(!c){let e=a.name||r;throw new TypeError(`${i??o?.raw??o} not allowed for ${e} in ${this.name}()`)}return o=c.resolve(o),c.range&&(t[n]=c.toString()),o}))}canSerialize(){return"function"===this.type||this.serialize}parse(e){return null}static get(e,...t){return!e||b(e,this)?e:e[C]?e[C]:new R(e,...t)}}const B={D50:[.3457/.3585,1,.2958/.3585],D65:[.3127/.329,1,.3583/.329]};function _(e){return Array.isArray(e)?e:B[e]}function k(e,t,a,n={}){if(e=_(e),t=_(t),!e||!t)throw new TypeError(`Missing white point to convert ${e?"":"from"}${e||t?"":"/"}${t?"":"to"}`);if(e===t)return a;let o={W1:e,W2:t,XYZ:a,options:n};if(y.run("chromatic-adaptation-start",o),o.M||(o.W1===B.D65&&o.W2===B.D50?o.M=[[1.0479297925449969,.022946870601609652,-.05019226628920524],[.02962780877005599,.9904344267538799,-.017073799063418826],[-.009243040646204504,.015055191490298152,.7518742814281371]]:o.W1===B.D50&&o.W2===B.D65&&(o.M=[[.955473421488075,-.02309845494876471,.06325924320057072],[-.0283697093338637,1.0099953980813041,.021041441191917323],[.012314014864481998,-.020507649298898964,1.330365926242124]])),y.run("chromatic-adaptation-end",o),o.M)return r(o.XYZ,o.M);throw new TypeError("Only Bradford CAT with white points D50 and D65 supported for now.")}function S(e,t){let r,a={str:String(e)?.trim(),options:t};if(y.run("parse-start",a),a.color)return a.color;a.parsed=function(e){if(!e)return;e=e.trim();let t=e.match(E.function);if(t){let e=[],r=[],a=!1,n=t[1].toLowerCase(),o=t[2].replace(E.singleArgument,((t,o)=>{let{value:s,meta:i}=function(e){let 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j(e,o)}catch(e){s=e}let{CSS:i,getComputedStyle:c}=globalThis;if(a(e)&&n&&i&&c&&i.supports(r,e)){let t=n.style[r];e!==t&&(n.style[r]=e);let a=c(n).getPropertyValue(r);if(e!==t&&(n.style[r]=t),a!==e)try{return j(a,o)}catch(e){s=e}else s={message:"Color value is a valid CSS color, but it could not be resolved :("}}return t.errorMeta&&(t.errorMeta.error=s),null}function P(e,t){e=j(e);let r,a=z.get(t,t?.space),n=t?.precision;return r=!a||e.space.equals(a)?e.coords.slice():a.from(e),void 0===n?r:r.map((e=>c(e,n)))}function $(e,t){if(e=j(e),"alpha"===t)return e.alpha??1;let{space:r,index:a}=z.resolveCoord(t,e.space);return P(e,r)[a]}function q(e,t,r,a){return e=j(e),Array.isArray(t)&&([t,r,a]=[e.space,t,r]),t=z.get(t),e.coords=t===e.space?r.slice():t.to(e.space,r),void 0!==a&&(e.alpha=a),e}function D(e,t,r){if(e=j(e),2===arguments.length&&"object"===n(arguments[1])){let t=arguments[1];for(let r in t)D(e,r,t[r])}else if("function"==typeof 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