Map WAAPI easing names

CHANGELOG.md

@@ -4,6 +4,12 @@ Framer Motion adheres to [Semantic Versioning](http://semver.org/).
 
 Undocumented APIs should be considered internal and may change without warning.
 
+## [7.9.1] 2022-12-14
+
+### Fixed
+
+-   Fixing mapping Framer Motion easing names to WAAPI.
+
 ## [7.9.0] 2022-12-14
 
 ### Added

dev/examples/WAAPI-background-color.tsx

@@ -0,0 +1,23 @@
+import * as React from "react"
+import { useState } from "react"
+import { motion } from "framer-motion"
+
+const style = {
+    width: 100,
+    height: 100,
+    background: "white",
+}
+
+export const App = () => {
+    const [state, setState] = useState(false)
+
+    return (
+        <motion.div
+            initial={{ backgroundColor: "#00f" }}
+            animate={{ backgroundColor: state ? "#00f" : "#f00" }}
+            onClick={() => setState(!state)}
+            transition={{ duration: 1 }}
+            style={style}
+        />
+    )
+}

packages/framer-motion/package.json

@@ -39,7 +39,7 @@
         "clean": "rm -rf types dist lib",
         "test": "yarn test-server && yarn test-client",
         "test-ci": "yarn test",
-        "test-client": "jest --config jest.config.json --max-workers=2 src/motion/__tests__/waapi.test.tsx",
+        "test-client": "jest --config jest.config.json --max-workers=2",
         "test-server": "jest --config jest.config.ssr.json ",
         "test-watch": "jest --watch --coverage --coverageReporters=lcov --config jest.config.json",
         "test-appear": "yarn run collect-appear-tests && start-server-and-test 'pushd ../../; python -m SimpleHTTPServer; popd' http://0.0.0.0:8000 'cypress run -s cypress/integration/appear.chrome.ts --config baseUrl=http://localhost:8000/'",

packages/framer-motion/src/animation/waapi/easing.ts

@@ -1,4 +1,26 @@
-import { BezierDefinition } from "../../easing/types"
+import { BezierDefinition, EasingDefinition } from "../../easing/types"
+import { camelToDash } from "../../render/dom/utils/camel-to-dash"
 
 export const cubicBezierAsString = ([a, b, c, d]: BezierDefinition) =>
     `cubic-bezier(${a}, ${b}, ${c}, ${d})`
+
+const validWaapiEasing = new Set([
+    "linear",
+    "ease-in",
+    "ease-out",
+    "ease-in-out",
+])
+
+export function mapEasingName(easingName: string): string {
+    const name = camelToDash(easingName)
+    return validWaapiEasing.has(name) ? name : "ease"
+}
+
+export function mapEasingToNativeEasing(
+    easing?: EasingDefinition
+): string | undefined {
+    if (!easing) return undefined
+    return Array.isArray(easing)
+        ? cubicBezierAsString(easing)
+        : mapEasingName(easing)
+}

packages/framer-motion/src/animation/waapi/index.ts

@@ -1,4 +1,4 @@
-import { cubicBezierAsString } from "./easing"
+import { mapEasingToNativeEasing } from "./easing"
 import { NativeAnimationOptions } from "./types"
 
 export function animateStyle(
@@ -19,7 +19,7 @@ export function animateStyle(
         {
             delay,
             duration,
-            easing: Array.isArray(ease) ? cubicBezierAsString(ease) : ease,
+            easing: mapEasingToNativeEasing(ease),
             fill: "both",
             iterations: repeat + 1,
             direction: repeatType === "reverse" ? "alternate" : "normal",

packages/framer-motion/src/motion/__tests__/waapi.test.tsx

@@ -74,6 +74,126 @@ describe("WAAPI animations", () => {
         )
     })
 
+    test("Maps 'easeIn' to 'ease-in'", () => {
+        const ref = createRef<HTMLDivElement>()
+        const Component = () => (
+            <motion.div
+                ref={ref}
+                initial={{ opacity: 0 }}
+                animate={{ opacity: 1 }}
+                transition={{
+                    ease: "easeIn",
+                }}
+            />
+        )
+        const { rerender } = render(<Component />)
+        rerender(<Component />)
+
+        expect(ref.current!.animate).toBeCalled()
+        expect(ref.current!.animate).toBeCalledWith(
+            { opacity: [0, 1], offset: undefined },
+            {
+                easing: "ease-in",
+                delay: -0,
+                duration: 0.3,
+                direction: "normal",
+                fill: "both",
+                iterations: 1,
+            }
+        )
+    })
+
+    test("Maps 'easeOut' to 'ease-out'", () => {
+        const ref = createRef<HTMLDivElement>()
+        const Component = () => (
+            <motion.div
+                ref={ref}
+                initial={{ opacity: 0 }}
+                animate={{ opacity: 1 }}
+                transition={{
+                    ease: "easeOut",
+                }}
+            />
+        )
+        const { rerender } = render(<Component />)
+        rerender(<Component />)
+
+        expect(ref.current!.animate).toBeCalled()
+        expect(ref.current!.animate).toBeCalledWith(
+            { opacity: [0, 1], offset: undefined },
+            {
+                easing: "ease-out",
+                delay: -0,
+                duration: 0.3,
+                direction: "normal",
+                fill: "both",
+                iterations: 1,
+            }
+        )
+    })
+
+    test("Maps 'easeInOut' to 'ease-in-out'", () => {
+        const ref = createRef<HTMLDivElement>()
+        const Component = () => (
+            <motion.div
+                ref={ref}
+                initial={{ opacity: 0 }}
+                animate={{ opacity: 1 }}
+                transition={{
+                    ease: "easeInOut",
+                }}
+            />
+        )
+        const { rerender } = render(<Component />)
+        rerender(<Component />)
+
+        expect(ref.current!.animate).toBeCalled()
+        expect(ref.current!.animate).toBeCalledWith(
+            { opacity: [0, 1], offset: undefined },
+            {
+                easing: "ease-in-out",
+                delay: -0,
+                duration: 0.3,
+                direction: "normal",
+                fill: "both",
+                iterations: 1,
+            }
+        )
+    })
+
+    /**
+     * TODO: Wait for comments and either bump these back to the main thread,
+     * generate keyframes, generate linear() easing, or create similar cubic beziers.
+     */
+    test("Maps remaining easings to 'ease'", () => {
+        const ref = createRef<HTMLDivElement>()
+        const Component = () => (
+            <motion.div
+                ref={ref}
+                initial={{ opacity: 0 }}
+                animate={{ opacity: 1 }}
+                transition={{
+                    ease: "anticipate",
+                }}
+            />
+        )
+        const { rerender } = render(<Component />)
+        rerender(<Component />)
+
+        expect(ref.current!.animate).toBeCalled()
+        expect(ref.current!.animate).toBeCalledWith(
+            { opacity: [0, 1], offset: undefined },
+            {
+                easing: "ease",
+                delay: -0,
+                duration: 0.3,
+                direction: "normal",
+                fill: "both",
+                iterations: 1,
+            }
+        )
+    })
+
     test("WAAPI is called with pre-generated spring keyframes", () => {
         const ref = createRef<HTMLDivElement>()
         const Component = () => (

yarn.lock

@@ -7909,8 +7909,8 @@ __metadata:
     cache-loader: ^1.2.5
     convert-tsconfig-paths-to-webpack-aliases: ^0.9.2
     fork-ts-checker-webpack-plugin: ^6.2.0
-    framer-motion: ^7.8.1
-    framer-motion-3d: ^7.8.1
+    framer-motion: ^7.9.0
+    framer-motion-3d: ^7.9.0
     path-browserify: ^1.0.1
     react: ^18.2.0
     react-dom: ^18.2.0
@@ -7976,14 +7976,14 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"framer-motion-3d@^7.8.1, framer-motion-3d@workspace:packages/framer-motion-3d":
+"framer-motion-3d@^7.9.0, framer-motion-3d@workspace:packages/framer-motion-3d":
   version: 0.0.0-use.local
   resolution: "framer-motion-3d@workspace:packages/framer-motion-3d"
   dependencies:
     "@react-three/fiber": ^8.2.2
     "@react-three/test-renderer": ^9.0.0
     "@rollup/plugin-commonjs": ^22.0.1
-    framer-motion: ^7.8.1
+    framer-motion: ^7.9.0
     react-merge-refs: ^2.0.1
   peerDependencies:
     "@react-three/fiber": ^8.2.2
@@ -7993,7 +7993,7 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"framer-motion@^7.8.1, framer-motion@workspace:packages/framer-motion":
+"framer-motion@^7.9.0, framer-motion@workspace:packages/framer-motion":
   version: 0.0.0-use.local
   resolution: "framer-motion@workspace:packages/framer-motion"
   dependencies: