42 lines
1.3 KiB
JavaScript
42 lines
1.3 KiB
JavaScript
import { invariant } from '../../errors.mjs';
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import { noop } from '../../noop.mjs';
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import { anticipate } from '../anticipate.mjs';
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import { backIn, backInOut, backOut } from '../back.mjs';
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import { circIn, circInOut, circOut } from '../circ.mjs';
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import { cubicBezier } from '../cubic-bezier.mjs';
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import { easeIn, easeInOut, easeOut } from '../ease.mjs';
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import { isBezierDefinition } from './is-bezier-definition.mjs';
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const easingLookup = {
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linear: noop,
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easeIn,
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easeInOut,
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easeOut,
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circIn,
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circInOut,
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circOut,
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backIn,
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backInOut,
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backOut,
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anticipate,
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};
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const isValidEasing = (easing) => {
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return typeof easing === "string";
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};
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const easingDefinitionToFunction = (definition) => {
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if (isBezierDefinition(definition)) {
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// If cubic bezier definition, create bezier curve
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invariant(definition.length === 4, `Cubic bezier arrays must contain four numerical values.`, "cubic-bezier-length");
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const [x1, y1, x2, y2] = definition;
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return cubicBezier(x1, y1, x2, y2);
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}
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else if (isValidEasing(definition)) {
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// Else lookup from table
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invariant(easingLookup[definition] !== undefined, `Invalid easing type '${definition}'`, "invalid-easing-type");
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return easingLookup[definition];
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}
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return definition;
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};
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export { easingDefinitionToFunction };
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