main repo

node_modules/motion-utils/dist/es/easing/utils/map.mjs

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