svelte/documentation/examples/11-easing/00-easing/eases.js

import * as eases from 'svelte/easing';

const processed_eases = {};

for (const ease in eases) {
	if (ease === 'linear') {
		processed_eases.linear = eases.linear;
	} else {
		const name = ease.replace(/In$|InOut$|Out$/, '');
		const type = ease.match(/In$|InOut$|Out$/)[0];

		if (!(name in processed_eases)) processed_eases[name] = {};
		processed_eases[name][type] = {};
		processed_eases[name][type].fn = eases[ease];

		let shape = 'M0 1000';
		for (let i = 1; i <= 1000; i++) {
			shape = `${shape} L${(i / 1000) * 1000} ${1000 - eases[ease](i / 1000) * 1000} `;
			processed_eases[name][type].shape = shape;
		}
	}
}

const sorted_eases = new Map([
	['sine', processed_eases.sine],
	['quad', processed_eases.quad],
	['cubic', processed_eases.cubic],
	['quart', processed_eases.quart],
	['quint', processed_eases.quint],
	['expo', processed_eases.expo],
	['circ', processed_eases.circ],
	['back', processed_eases.back],
	['elastic', processed_eases.elastic],
	['bounce', processed_eases.bounce]
]);

export const types = [
	['Ease In', 'In'],
	['Ease Out', 'Out'],
	['Ease In Out', 'InOut']
];

export { sorted_eases as eases };