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1. Cubic Bézier Javascript. Matches App... Cubic Bézier Javascript. Matches Apple WebKit/UnitBezier.h

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   /** MIT License github.com/pushkine/ */

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   function cubicBezier(x1: number, y1: number, x2: number, y2: number) {

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   	if (!(x1 >= 0 && x1 <= 1 && x2 >= 0 && x2 <= 1))

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   		throw new Error(`CubicBezier x1 & x2 values must be { 0 < x < 1 }, got { x1 : ${x1}, x2: ${x2} }`);

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   	const ax = 1.0 - (x2 = 3.0 * (x2 - x1) - (x1 *= 3.0)) - x1,

2. Javascript spring solving algorithm.... Javascript spring solving algorithm. Solves real life damped harmonic oscillator physics equations as used in Apple iOS & many others. Tweak damping and stiffness for spring behavior, scale mass with value delta and set soft to force solution for a critically damped spring ( no bounce eased smooth ) . Play with this function's graph on www.desmos.com/calculator/urztjwk4dv

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   /** MIT License github.com/pushkine/ */

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   interface SpringParams {

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   	mass?: number; // = 1.0

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   	damping?: number; // = 10.0

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   	stiffness?: number; // = 100.0

3. Javascript color conversion algorith... Javascript color conversion algorithms. Complete HEX, HSL, RGB and named css color parsing & interpolation in the HCL color space. All constants directly sourced from the google/chromium open source project. Play, compare and benchmark against d3 on https://svelte.dev/repl/0a40a8348f8841d0b7007c58e4d9b54c

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   type RGBA = [number, number, number, number];

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   const rgb255 = (v: number) => (v < 255 ? (v > 0 ? v : 0) : 255);

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   const b1 = (v: number) => (v > 0.0031308 ? v ** (1 / 2.4) * 269.025 - 14.025 : v * 3294.6);

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   const b2 = (v: number) => (v > 0.2068965 ? v ** 3 : (v - 4 / 29) * (108 / 841));

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   const a1 = (v: number) => (v > 10.314724 ? ((v + 14.025) / 269.025) ** 2.4 : v / 3294.6);

4. Styles and colors for CLIs in TypeSc... Styles and colors for CLIs in TypeScript. Try it on https://replit.com/@pushkine/ColdTautSpools#index.ts

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   /** MIT License github.com/pushkine */

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   export const color = (function <C extends readonly any[], M extends {}>(colors: C, mods: M) {

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       const fn = (c1: number, c2: number, str: string) => `\x1b[${c1}m${str}\x1b[${c2}m`;

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       const fnc = (c1: number, str: string) => fn(c1, 39, str.replace(/\x1b\[39m/g, `\x1b[${c1}m`));

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       const obj = { unstyle: (str: string) => str.replace(/\x1b\[[0-9]{1,2}m/g, ""), grey: fnc.bind(null, 90) };

5. benchmarks.md benchmarks.md

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   https://jsbench.me/user/pushkine