fix: handle NaN in spring

examples/simple/.rescriptsrc.js

@@ -1,29 +1,29 @@
-const path = require('path')
-const resolveFrom = require('resolve-from')
+const path = require("path");
+const resolveFrom = require("resolve-from");
 
-const fixLinkedDependencies = config => {
+const fixLinkedDependencies = (config) => {
   config.resolve = {
     ...config.resolve,
     alias: {
       ...config.resolve.alias,
-      react$: resolveFrom(path.resolve('node_modules'), 'react'),
-      'react-dom$': resolveFrom(path.resolve('node_modules'), 'react-dom'),
+      react$: resolveFrom(path.resolve("node_modules"), "react"),
+      "react-dom$": resolveFrom(path.resolve("node_modules"), "react-dom"),
     },
-  }
-  return config
-}
+  };
+  return config;
+};
 
-const includeSrcDirectory = config => {
+const includeSrcDirectory = (config) => {
   config.resolve = {
     ...config.resolve,
-    modules: [path.resolve('src'), ...config.resolve.modules],
-  }
-  return config
-}
+    modules: [path.resolve("src"), ...config.resolve.modules],
+  };
+  return config;
+};
 
 module.exports = [
-  ['use-babel-config', '.babelrc'],
-  ['use-eslint-config', '.eslintrc'],
+  ["use-babel-config", ".babelrc"],
+  ["use-eslint-config", ".eslintrc"],
   fixLinkedDependencies,
   // includeSrcDirectory,
-]
+];

src/utils/spring.ts

@@ -13,6 +13,9 @@ type Solution = {
 const epsilon = 0.001
 
 function almostEqual(a: number, b: number) {
+  if (Number.isNaN(a) && Number.isNaN(b)) {
+    return true
+  }
   return a > b - epsilon && a < b + epsilon
 }